Subsections


C. Compiler messages

This appendix is meant to list all the compiler messages. The list of messages is generated from he compiler source itself, and should be faitly complete. At this point, only assembler errors are not in the list.

C.1 General compiler messages

This section gives the compiler messages which are not fatal, but which display useful information. The number of such messages can be controlled with the various verbosity level -v switches.
Compiler: arg1
When the -vt switch is used, this line tells you what compiler is used.
Compiler OS: arg1
When the -vd switch is used, this line tells you what the source operating system is.
Info: Target OS: arg1
When the -vd switch is used, this line tells you what the target operating system is.
Using executable path: arg1
When the -vt switch is used, this line tells you where the compiler looks for it's binaries.
Using unit path: arg1
When the -vt switch is used, this line tells you where the compiler looks for compiled units. You can set this path with the -Fu
Using include path: arg1
When the -vt switch is used, this line tells you where the compiler looks for it's include files (files used in {$I xxx} statements). You can set this path with the -I option.
Using library path: arg1
When the -vt switch is used, this line tells you where the compiler looks for the libraries. You can set this path with the -Fl option.
Using object path: arg1
When the -vt switch is used, this line tells you where the compiler looks for object files you link in (files used in {$L xxx} statements). You can set this path with the -Fo option.
Info: arg1 Lines compiled, arg2 sec
When the -vi switch is used, the compiler reports the number of lines compiled, and the time it took to compile them (real time, not program time).
Fatal: No memory left
The compiler doesn't have enough memory to compile your program. There are several remedies for this:
Info: Writing Resource String Table file: arg1
This message is shown when the compiler writes the Resource String Table file containing all the resource strings for a program.
Error: Writing Resource String Table file: arg1
This message is shown when the compiler encountered an error when writing the Resource String Table file
Info: Fatal:
Prefix for Fatal Errors
Info: Error:
Prefix for Errors
Info: Warning:
Prefix for Warnings
Info: Note:
Prefix for Notes
Info: Hint:
Prefix for Hints

C.2 Scanner messages.

This section lists the messages that the scanner emits. The scanner takes care of the lexical structure of the pascal file, i.e. it tries to find reserved words, strings, etc. It also takes care of directives and conditional compiling handling.
Fatal: Unexpected end of file
this typically happens in one of the following cases :
Fatal: String exceeds line
You forgot probably to include the closing ' in a string, so it occupies multiple lines.
Fatal: illegal character arg1 (arg2)
An illegal character was encountered in the input file.
Fatal: Syntax error, arg1 expected but arg2 found
This indicates that the compiler expected a different token than the one you typed. It can occur almost everywhere where you make a mistake against the pascal language.
Start reading includefile arg1
When you provide the -vt switch, the compiler tells you when it starts reading an included file.
Warning: Comment level arg1 found
When the -vw switch is used, then the compiler warns you if it finds nested comments. Nested comments are not allowed in Turbo Pascal and can be a possible source of errors.
Note: $F directive (FAR) ignored
The FAR directive is a 16-bit construction which is recorgnised but ignored by the compiler, since it produces 32 bit code.
Note: Stack check is global under Linux
Stack checking with the -Cs switch is ignored under LINUX, since LINUX does this for you. Only displayed when -vn is used.
Note: Ignored compiler switch arg1
With -vn on, the compiler warns if it ignores a switch
Warning: Illegal compiler switch arg1
You included a compiler switch (i.e. {$... }) which the compiler doesn't know.
Warning: This compiler switch has a global effect
When -vw is used, the compiler warns if a switch is global.
Error: Illegal char constant
This happens when you specify a character with its ASCII code, as in #96, but the number is either illegal, or out of range. The range is 1-255.
Fatal: Can't open file arg1
Free Pascal cannot find the program or unit source file you specified on the command line.
Fatal: Can't open include file arg1
Free Pascal cannot find the source file you specified in a {$include ..} statement.
Error: Too many $ENDIFs or $ELSEs
Your {$IFDEF ..} and {$ENDIF} statements aren't balanced.
Warning: Records fields can be aligned to 1,2,4,8,16 or 32 bytes only
You are specifying the {$PACKRECORDS n} with an illegal value for n. Only 1, 2, 4, 8, 16 and 32 are valid in this case.
Warning: Enumerated can be saved in 1,2 or 4 bytes only
You are specifying the {$PACKENUM n} with an illegal value for n. Only 1,2 or 4 are valid in this case.
Error: $ENDIF expected for arg1 arg2 defined in line arg3
Your conditional compilation statements are unbalanced.
Error: Syntax error while parsing a conditional compiling expression
There is an error in the expression following the {$if ..} compiler directive.
Error: Evaluating a conditional compiling expression
There is an error in the expression following the {$if ..} compiler directive.
Warning: Macro contents is cut after char 255 to evalute expression
The contents of macros canno be longer than 255 characters. This is a safety in the compiler, to prevent buffer overflows. This is shown as a warning, i.e. when the -vw switch is used.
Error: ENDIF without IF(N)DEF
Your {$IFDEF ..} and {$ENDIF} statements aren't balanced.
Fatal: User defined: arg1
A user defined fatal error occurred. see also the Programmers' guide
Error: User defined: arg1
A user defined error occurred. see also the Programmers' guide
Warning: User defined: arg1
A user defined warning occurred. see also the Programmers' guide
Note: User defined: arg1
A user defined note was encountered. see also the Programmers' guide
Hint: User defined: arg1
A user defined hint was encountered. see also the Programmers' guide
Info: User defined: arg1
User defined information was encountered. see also the Programmers' guide
Error: Keyword redefined as macro has no effect
You cannot redefine keywords with macros.
Fatal: Macro buffer overflow while reading or expanding a macro
Your macro or it's result was too long for the compiler.
Warning: Extension of macros exceeds a deep of 16.
When expanding a macro macros have been nested to a level of 16. The compiler will expand no further, since this may be a sign that recursion is used.
Error: compiler switches aren't allowed in (* ... *) styled comments
Compiler switches should always be between { } comment delimiters.
Handling switch "arg1"
When you set debugging info on (-vd) the compiler tells you when it is evaluating conditional compile statements.
ENDIF arg1 found
When you turn on conditional messages(-vc), the compiler tells you where it encounters conditional statements.
IFDEF arg1 found, arg2
When you turn on conditional messages(-vc), the compiler tells you where it encounters conditional statements.
IFOPT arg1 found, arg2
When you turn on conditional messages(-vc), the compiler tells you where it encounters conditional statements.
IF arg1 found, arg2
When you turn on conditional messages(-vc), the compiler tells you where it encounters conditional statements.
IFNDEF arg1 found, arg2
When you turn on conditional messages(-vc), the compiler tells you where it encounters conditional statements.
ELSE arg1 found, arg2
When you turn on conditional messages(-vc), the compiler tells you where it encounters conditional statements.
Skipping until...
When you turn on conditional messages(-vc), the compiler tells you where it encounters conditional statements, and whether it is skipping or compiling parts.
Info: Press <return> to continue
When the -vi switch is used, the compiler stops compilation and waits for the Enter key to be pressed when it encounters a {$STOP} directive.
Warning: Unsupported switch arg1
When warings are turned on (-vw) the compiler warns you about unsupported switches. This means that the switch is used in Delphi or Turbo Pascal, but not in Free Pascal
Warning: Illegal compiler directive arg1
When warings are turned on (-vw) the compiler warns you about unrecognised switches. For a list of recognised switches, Programmers' guide
Back in arg1
When you use (-vt) the compiler tells you when it has finished reading an include file.
Warning: Unsupported application type: arg1
You get this warning, ff you specify an unknown application type with the directive {$APPTYPE}
Warning: APPTYPE isn't support by the target OS
The {$APPTYPE} directive is supported by win32 applications only.
Warning: DESCRIPTION is only supported for OS2 and Win32
The {$DESCRIPTION} directive is only supported for OS2 and Win32 targets.
Note: VERSION is not supported by target OS.
The {$VERSION} directive is only supported by win32 target.
Note: VERSION only for exes or DLLs
The {$VERSION} directive is only used for executable or DLL sources.
Warning: Wrong format for VERSION directive arg1
The {$VERSION} directive format is majorversion.minorversion where majorversion and minorversion are words.
Warning: Unsupported assembler style specified arg1
When you specify an assembler mode with the {$ASMMODE xxx} the compiler didn't recognize the mode you specified.
Warning: ASM reader switch is not possible inside asm statement, arg1 will be effective only for next
It is not possible to switch from one assembler reader to another inside an assmebler block. The new reader will be used for next assembler statement only.
Error: Wrong switch toggle, use ON/OFF or +/-
You need to use ON or OFF or a + or - to toggle the switch
Error: Resource files are not supported for this target
The target you are compiling for doesn't support resource files. The only targets which can use resource files are Win32 and OS/2 (EMX) currently
Warning: Include environment arg1 not found in environment
The included environment variable can't be found in the environment, it'll be replaced by an empty string instead.
Error: Illegal value for FPU register limit
Valid values for this directive are 0..8 and NORMAL/DEFAULT
Warning: Only one resource file is supported for this target
The target you are compiling for supports only one resource file. This is the case of OS/2 (EMX) currently. The first resource file found is used, the others are discarded.
Warning: Macro support has been turned off
A macro declaration has been found, but macro support is currently off, so the declaration will be ignored. To turn macro support on compile with -Sm on the commandline or add {$MACRO ON} in the source

C.3 Parser messages

This section lists all parser messages. The parser takes care of the semantics of you language, i.e. it determines if your pascal constructs are correct.
Error: Parser - Syntax Error
An error against the Turbo Pascal language was encountered. This happens typically when an illegal character is found in the sources file.
Warning: Procedure type FAR ignored
This is a warning. FAR is a construct for 8 or 16 bit programs. Since the compile generates 32 bit programs, it ignores this directive.
Warning: Procedure type NEAR ignored
This is a warning. NEAR is a construct for 8 or 16 bit programs. Since the compile generates 32 bit programs, it ignores this directive.
Warning: Procedure type INTERRUPT ignored for not i386
This is a warning. INTERRUPT is a i386 specific construct and is ignored for other processors.
Error: INTERRUPT procedure can't be nested
An INTERRUPT procedure must be global.
Warning: Procedure type arg1 ignored
This is a warning. REGISTER,REINTRODUCE is ignored by FPC programs for now. This is introduced first for Delphi compatibility.
Error: Not all declarations of arg1 are declared with OVERLOAD
When you want to use overloading using the OVERLOAD directive, then all declarations need to have OVERLOAD specified.
Error: No DLL File specified
No longer in use.
Error: Duplicate exported function name arg1
Exported function names inside a specific DLL must all be different
Error: Duplicate exported function index arg1
Exported function names inside a specific DLL must all be different
Error: Invalid index for exported function
DLL function index must be in the range 1..$FFFF
Warning: Relocatable DLL or executable arg1 debug info does not work, disabled.
Warning: To allow debugging for win32 code you need to disable relocation with -WN option
Stabs info is wrong for relocatable DLL or EXES use -WN if you want to debug win32 executables.
Error: Constructor name must be INIT
You are declaring a constructor with a name which isn't init, and the -Ss switch is in effect. See the -Ss switch (See Ss).
Error: Destructor name must be DONE
You are declaring a destructor with a name which isn't done, and the -Ss switch is in effect. See the -Ss switch (See Ss).
Error: Illegal open parameter
You are trying to use the wrong type for an open parameter.
Error: Procedure type INLINE not supported
You tried to compile a program with C++ style inlining, and forgot to specify the -Si option (See Si). The compiler doesn't support C++ styled inlining by default.
Warning: Private methods shouldn't be VIRTUAL
You declared a method in the private part of a object (class) as virtual. This is not allowed. Private methods cannot be overridden anyway.
Warning: Constructor should be public
Constructors must be in the 'public' part of an object (class) declaration.
Warning: Destructor should be public
Destructors must be in the 'public' part of an object (class) declaration.
Note: Class should have one destructor only
You can declare only one destructor for a class.
Error: Local class definitions are not allowed
Classes must be defined globally. They cannot be defined inside a procedure or function
Fatal: Anonym class definitions are not allowed
An invalid object (class) declaration was encountered, i.e. an object or class without methods that isn't derived from another object or class. For example:
 Type o = object
          a : longint;
          end;
will trigger this error.
Error: The object arg1 has no VMT
Error: Illegal parameter list
You are calling a function with parameters that are of a different type than the declared parameters of the function.
Error: Wrong parameter type specified for arg no. arg1
There is an error in the parameter list of the function or procedure. The compiler cannot determine the error more accurate than this.
Error: Wrong amount of parameters specified
There is an error in the parameter list of the function or procedure, the number of parameters is not correct.
Error: overloaded identifier arg1 isn't a function
The compiler encountered a symbol with the same name as an overloaded function, but it isn't a function it can overload.
Error: overloaded functions have the same parameter list
You're declaring overloaded functions, but with the same parameter list. Overloaded function must have at least 1 different parameter in their declaration.
Error: function header doesn't match the forward declaration arg1
You declared a function with same parameters but different result type or function modifiers.
Error: function header arg1 doesn't match forward : var name changes arg2 => arg3
You declared the function in the interface part, or with the forward directive, but define it with a different parameter list.
Note: Values in enumeration types have to be ascending
Free Pascal allows enumeration constructions as in C. Given the following declaration two declarations:
 type a = (A_A,A_B,A_E:=6,A_UAS:=200);
 type a = (A_A,A_B,A_E:=6,A_UAS:=4);
The second declaration would produce an error. A_UAS needs to have a value higher than A_E, i.e. at least 7.
Note: Interface and implementation names are different arg1 => arg2
This note warns you if the implementation and interface names of a functions are different, but they have the same mangled name. This is important when using overloaded functions (but should produce no error).
Error: With can not be used for variables in a different segment
With stores a variable locally on the stack, but this is not possible if the variable belongs to another segment.
Error: function nesting > 31
You can nest function definitions only 31 times.
Error: range check error while evaluating constants
The constants are out of their allowed range.
Warning: range check error while evaluating constants
The constants are out of their allowed range.
Error: duplicate case label
You are specifying the same label 2 times in a case statement.
Error: Upper bound of case range is less than lower bound
The upper bound of a case label is less than the lower bound and this is useless
Error: typed constants of classes are not allowed
You cannot declare a constant of type class or object.
Error: functions variables of overloaded functions are not allowed
You are trying to assign an overloaded function to a procedural variable. This isn't allowed.
Error: string length must be a value from 1 to 255
The length of a string in Pascal is limited to 255 characters. You are trying to declare a string with length lower than 1 or greater than 255 (This is not true for Longstrings and AnsiStrings.
Warning: use extended syntax of NEW and DISPOSE for instances of objects
If you have a pointer a to a class type, then the statement new(a) will not initialize the class (i.e. the constructor isn't called), although space will be allocated. you should issue the new(a,init) statement. This will allocate space, and call the constructor of the class.
Warning: use of NEW or DISPOSE for untyped pointers is meaningless
Error: use of NEW or DISPOSE is not possible for untyped pointers
You cannot use new(p) or dispose(p) if p is an untyped pointer because no size is associated to an untyped pointer. Accepted for compatibility in tp and delphi modes.
Error: class identifier expected
This happens when the compiler scans a procedure declaration that contains a dot, i.e., a object or class method, but the type in front of the dot is not a known type.
Error: type identifier not allowed here
You cannot use a type inside an expression.
Error: method identifier expected
This identifier is not a method. This happens when the compiler scans a procedure declaration that contains a dot, i.e., a object or class method, but the procedure name is not a procedure of this type.
Error: function header doesn't match any method of this class arg1
This identifier is not a method. This happens when the compiler scans a procedure declaration that contains a dot, i.e., a object or class method, but the procedure name is not a procedure of this type.
procedure/function arg1
When using the -vp switch, the compiler tells you when it starts processing a procedure or function implementation.
Error: Illegal floating point constant
The compiler expects a floating point expression, and gets something else.
Error: FAIL can be used in constructors only
You are using the FAIL instruction outside a constructor method.
Error: Destructors can't have parameters
You are declaring a destructor with a parameter list. Destructor methods cannot have parameters.
Error: Only class methods can be referred with class references
This error occurs in a situation like the following:
 Type :
    Tclass = Class of Tobject;

 Var C : TClass;

 begin
 ...
 C.free
Free is not a class method and hence cannot be called with a class reference.
Error: Only class methods can be accessed in class methods
This is related to the previous error. You cannot call a method of an object from a inside a class method. The following code would produce this error:
 class procedure tobject.x;

 begin
   free
Because free is a normal method of a class it cannot be called from a class method.
Error: Constant and CASE types do not match
One of the labels is not of the same type as the case variable.
Error: The symbol can't be exported from a library
You can only export procedures and functions when you write a library. You cannot export variables or constants.
Warning: An inherited method is hidden by arg1
A method that is declared virtual in a parent class, should be overridden in the descendent class with the override directive. If you don't specify the override directive, you will hide the parent method; you will not override it.
Error: There is no method in an ancestor class to be overridden: arg1
You try to override a virtual method of a parent class that doesn't exist.
Error: No member is provided to access property
You specified no read directive for a property.
Warning: Stored prorperty directive is not yet implemented
The stored directive is not yet implemented
Error: Illegal symbol for property access
There is an error in the read or write directives for an array property. When you declare an array property, you can only access it with procedures and functions. The following code woud cause such an error.
 tmyobject = class
   i : integer;
   property x [i : integer]: integer read I write i;

Error: Cannot access a protected field of an object here
Fields that are declared in a protected section of an object or class declaration cannot be accessed outside the module wher the object is defined, or outside descendent object methods.
Error: Cannot access a private field of an object here
Fields that are declared in a private section of an object or class declaration cannot be accessed outside the module where the class is defined.
Warning: overloaded method of virtual method should be virtual: arg1
If you declare overloaded methods in a class, then they should either all be virtual, or none. You shouldn't mix them.
Warning: overloaded method of non-virtual method should be non-virtual: arg1
If you declare overloaded methods in a class, then they should either all be virtual, or none. You shouldn't mix them.
Error: overloaded methods which are virtual must have the same return type: arg1
If you declare virtual overloaded methods in a class definition, they must have the same return type.
Error: EXPORT declared functions can't be nested
You cannot declare a function or procedure within a function or procedure that was declared as an export procedure.
Error: methods can't be EXPORTed
You cannot declare a procedure that is a method for an object as exported. That is, your methods cannot be called from a C program.
Error: call by var parameters have to match exactly: Got arg1 expected arg2
When calling a function declared with var parameters, the variables in the function call must be of exactly the same type. There is no automatic type conversion.
Error: Class isn't a parent class of the current class
When calling inherited methods, you are trying to call a method of a strange class. You can only call an inherited method of a parent class.
Error: SELF is only allowed in methods
You are trying to use the self parameter outside an object's method. Only methods get passed the self parameters.
Error: methods can be only in other methods called direct with type identifier of the class
A construction like sometype.somemethod is only allowed in a method.
Error: Illegal use of ':'
You are using the format : (colon) 2 times on an expression that is not a real expression.
Error: range check error in set constructor or duplicate set element
The declaration of a set contains an error. Either one of the elements is outside the range of the set type, either two of the elements are in fact the same.
Error: Pointer to object expected
You specified an illegal type in a New statement. The extended synax of New needs an object as a parameter.
Error: Expression must be constructor call
When using the extended syntax of new, you must specify the constructor method of the object you are trying to create. The procedure you specified is not a constructor.
Error: Expression must be destructor call
When using the extended syntax of dispose, you must specify the destructor method of the object you are trying to dispose of. The procedure you specified is not a destructor.
Error: Illegal order of record elements
When declaring a constant record, you specified the fields in the wrong order.
Error: Expression type must be class or record type
A with statement needs an argument that is of the type record or class. You are using with on an expression that is not of this type.
Error: Procedures can't return a value
In Free Pascal, you can specify a return value for a function when using the exit statement. This error occurs when you try to do this with a procedure. Procedures cannot return a value.
Error: constructors and destructors must be methods
You're declaring a procedure as destructor or constructor, when the procedure isn't a class method.
Error: Operator is not overloaded
You're trying to use an overloaded operator when it isn't overloaded for this type.
Error: Impossible to overload assignment for equal types
You can not overload assignment for types that the compiler considers as equal.
Error: Impossible operator overload
The combination of operator, arguments and return type are incompatible.
Error: Re-raise isn't possible there
You are trying to raise an exception where it isn't allowed. You can only raise exceptions in an except block.
Error: The extended syntax of new or dispose isn't allowed for a class
You cannot generate an instance of a class with the extended syntax of new. The constructor must be used for that. For the same reason, you cannot call Dispose to de-allocate an instance of a class, the destructor must be used for that.
Error: Assembler incompatible with function return type
You're trying to implement a assembler function, but the return type of the function doesn't allow that.
Error: Procedure overloading is switched off
When using the -So switch, procedure overloading is switched off. Turbo Pascal does not support function overloading.
Error: It is not possible to overload this operator (overload = instead)
You are trying to overload an operator which cannot be overloaded. The following operators can be overloaded :
    +, -, *, /, =, >, <, <=, >=, is, as, in, **, :=
Error: Comparative operator must return a boolean value
When overloading the = operator, the function must return a boolean value.
Error: Only virtual methods can be abstract
You are declaring a method as abstract, when it isn't declared to be virtual.
Fatal: Use of unsupported feature!
You're trying to force the compiler into doing something it cannot do yet.
Error: The mix of CLASSES and OBJECTS isn't allowed
You cannot derive objects and classes intertwined . That is, a class cannot have an object as parent and vice versa.
Warning: Unknown procedure directive had to be ignored: arg1
The procedure direcive you secified is unknown. Recognised procedure directives are cdecl, stdcall, popstack, pascal register, export.
Error: absolute can only be associated to ONE variable
You cannot specify more than one variable before the absolute directive. Thus, the following construct will provide this error:
 Var Z : Longint;
     X,Y : Longint absolute Z;
absolute can only be associated a var or const
The address of a absolute directive can only point to a variable or constant. Therefore, the following code will produce this error:
   Procedure X;

  var p : longint absolute x;

Error: absolute can only be associated a var or const
The address of a absolute directive can only point to a variable or constant. Therefore, the following code will produce this error:
   Procedure X;

  var p : longint absolute x;

Error: Only ONE variable can be initialized
You cannot specify more than one variable with a initial value in Delphi syntax.
Error: Abstract methods shouldn't have any definition (with function body)
Abstract methods can only be declared, you cannot implement them. They should be overridden by a descendant class.
Error: This overloaded function can't be local (must be exported)
You are defining a overloaded function in the implementation part of a unit, but there is no corresponding declaration in the interface part of the unit.
Warning: Virtual methods are used without a constructor in arg1
If you declare objects or classes that contain virtual methods, you need to have a constructor and destructor to initialize them. The compiler encountered an object or class with virtual methods that doesn't have a constructor/destructor pair.
Macro defined: arg1
When -vm is used, the compiler tells you when it defines macros.
Macro undefined: arg1
When -vm is used, the compiler tells you when it undefines macros.
Macro arg1 set to arg2
When -vm is used, the compiler tells you what values macros get.
Info: Compiling arg1
When you turn on information messages (-vi), the compiler tells you what units it is recompiling.
Parsing interface of unit arg1
This tells you that the reading of the interface of the current unit starts
Parsing implementation of arg1
This tells you that the code reading of the implementation of the current unit, library or program starts
Compiling arg1 for the second time
When you request debug messages (-vd) the compiler tells you what units it recompiles for the second time.
Error: Array properties aren't allowed here
You cannot use array properties at that point in the source.
Error: No property found to override
You want to overrride a property of a parent class, when there is, in fact, no such property in the parent class.
Error: Only one default property is allowed, found inherited default property in class arg1
You specified a property as Default, but a parent class already has a default property, and a class can have only one default property.
Error: The default property must be an array property
Only array properties of classes can be made default properties.
Error: Virtual constructors are only supported in class object model
You cannot have virtual constructors in objects. You can only have them in classes.
Error: No default property available
You try to access a default property of a class, but this class (or one of it's ancestors) doesn't have a default property.
Error: The class can't have a published section, use the $M+ switch
If you want a published section in a class definition, you must use the {$M+} switch, whch turns on generation of type information.
Error: Forward declaration of class arg1 must be resolved here to use the class as ancestor
To be able to use an object as an ancestor object, it must be defined first. This error occurs in the following situation:
  Type ParentClas = Class;
       ChildClass = Class(ParentClass)
         ...
       end;
Where ParentClass is declared but not defined.
Error: Local operators not supported
You cannot overload locally, i.e. inside procedures or function definitions.
Error: Procedure directive arg1 not allowed in interface section
This procedure directive is not allowed in the interface section of a unit. You can only use it in the implementation section.
Error: Procedure directive arg1 not allowed in implementation section
This procedure directive is not defined in the implementation section of a unit. You can only use it in the interface section.
Error: Procedure directive arg1 not allowed in procvar declaration
This procedure directive cannot be part of a procedural or function type declaration.
Error: Function is already declared Public/Forward arg1
You will get this error if a function is defined as forward twice. Or it is once in the interface section, and once as a forward declaration in the implmentation section.
Error: Can't use both EXPORT and EXTERNAL
These two procedure directives are mutually exclusive
Error: NAME keyword expected
The definition of an external variable needs a name clause.
Warning: arg1 not yet supported inside inline procedure/function
Inline procedures don't support this declaration.
Warning: Inlining disabled
Inlining of procedures is disabled.
Info: Writing Browser log arg1
When information messages are on, the compiler warns you when it writes the browser log (generated with the {$Y+ } switch).
Hint: Maybe pointer dereference is missing
The compiler thinks that a pointer may need a dereference.
Fatal: Selected assembler reader not supported
The selected assembler reader (with {$ASMMODE xxx} is not supported. The compiler can be compiled with or without support for a particular assembler reader.
Error: Procedure directive arg1 has conflicts with other directives
You specified a procedure directive that conflicts with other directives. for instance cdecl and pascal are mutually exclusive.
Error: Calling convention doesn't match forward
This error happens when you declare a function or procedure with e.g. cdecl; but omit this directive in the implementation, or vice versa. The calling convention is part of the function declaration, and must be repeated in the function definition.
Error: Register calling (fastcall) not supported
The register calling convention, i.e., arguments are passed in registers instead of on the stack is not supported. Arguments are always passed on the stack.
Error: Property can't have a default value
Set properties or indexed properties cannot have a default value.
Error: The default value of a property must be constant
The value of a default declared property must be known at compile time. The value you specified is only known at run time. This happens .e.g. if you specify a variable name as a default value.
Error: Symbol can't be published, can be only a class
Only class type variables can be in a published section of a class if they are not declared as a property.
Error: That kind of property can't be published
Properties in a published section cannot be array properties. they must be moved to public sections. Properties in a published section must be an ordinal type, a real type, strings or sets.
Warning: Empty import name specified
Both index and name for the import are 0 or empty
Warning: An import name is required
Some targets need a name for the imported procedure or a cdecl specifier
Error: Function internal name changed after use of function
This is an internal error; please report any occurrences of this error to the Free Pascal team.
Error: Division by zero
There is a divsion by zero encounted
Error: Invalid floating point operation
An operation on two real type values produced an overflow or a division by zero.
Error: Upper bound of range is less than lower bound
The upper bound of a case label is less than the lower bound and this is not possible
Warning: string "arg1" is longer than arg2
The size of the constant string is larger than the size you specified in string type definition
Error: string length is larger than array of char length
The size of the constant string is larger than the size you specified in the array[x..y] of char definition
Error: Illegal expression after message directive
Free Pascal supports only integer or string values as message constants
Error: Message handlers can take only one call by ref. parameter
A method declared with the message-directive as message handler can take only one parameter which must be declared as call by reference Parameters are declared as call by reference using the var-directive
Error: Duplicate message label: arg1
A label for a message is used twice in one object/class
Error: Self can be only an explicit parameter in message handlers
The self parameter can be passed only explicitly in a method which is declared as message method handler.
Error: Threadvars can be only static or global
Threadvars must be static or global, you can't declare a thread local to a procedure. Local variables are always local to a thread, because every thread has it's own stack and local variables are stored on the stack
Fatal: Direct assembler not supported for binary output format
You can't use direct assembler when using a binary writer, choose an other outputformat or use an other assembler reader
Warning: Don't load OBJPAS unit manual, use mode switch instead
You're trying to load the ObjPas unit manual from a uses clause. This is not a good idea to do, you can better use the {$mode objfpc} or {$mode delphi} directives which load the unit automaticly
Error: OVERRIDE can't be used in objects
Override isn't support for objects, use VIRTUAL instead to override a method of an anchestor object
Error: Data types which requires initialization/finalization can't be used in variant records
Some data type (e.g. ansistring) needs initialization/finalization code which is implicitly generated by the compiler. Such data types can't be used in the variant part of a record.
Error: Resourcestrings can be only static or global
Resourcestring can not be declared local, only global or using the static directive.
Error: Exit with argument can't be used here
an exit statement with an argument for the return value can't be used here, this can happen e.g. in try..except or try..finally blocks
Error: The type of the storage symbol must be boolean
If you specify a storage symbol in a property declaration, it must be of the type boolean
Error: This symbol isn't allowed as storage symbol
You can't use this type of symbol as storage specifier in property declaration. You can use only methods with the result type boolean, boolean class fields or boolean constants
Error: Only class which are compiled in $M+ mode can be published
In the published section of a class can be only class as fields used which are compiled in {$M+} or which are derived from such a class. Normally such a class should be derived from TPersitent
Error: Procedure directive expected
When declaring a procedure in a const block you used a ; after the procedure declaration after which a procedure directive must follow. Correct declarations are:
 const
   p : procedure;stdcall=nil;
   p : procedure stdcall=nil;
Error: The value for a property index must be of an ordinal type
The value you use to index a property must be of an ordinal type, for example an integer or enumerated type.
Error: Procedure name to short to be exported
The length of the procedure/function name must be at least 2 characters long. This is because of a bug in dlltool which doesn't parse the .def file correct with a name of length 1.
Error: No DEFFILE entry can be generated for unit global vars
Error: Compile without -WD option
You need to compile this file without the -WD switch on the commandline
Fatal: You need ObjFpc (-S2) or Delphi (-Sd) mode to compile this module
You need to use {$mode objfpc} or {$mode delphi} to compile this file. Or use the equivalent commandline switches -S2 or -Sd.
Error: Can't export with index under arg1
Exporting of functions or procedures with a specified index is not support on all targets. The only platforms currently supporting export with index are OS/2 and Win32.
Error: Exporting of variables is not supported under arg1
Exporting of variables is not support on all targets. The only platform currently supporting export of variables is Win32.
Error: Type "arg1" can't be used as array index type
Types like DWord or Int64 aren't allowed as array index type

C.4 Type checking errors

This section lists all errors that can occur when type checking is performed.
Error: Type mismatch
This can happen in many cases:
Error: Incompatible types: got "arg1" expected "arg2"
There is no conversion possible between the two types Another possiblity is that they are declared in different declarations:
 Var
    A1 : Array[1..10] Of Integer;
    A2 : Array[1..10] Of Integer;

 Begin
    A1:=A2; { This statement gives also this error, it
              is due the strict type checking of pascal }
 End.
Error: Type mismatch between arg1 and arg2
The types are not equal
Error: Type identifier expected
The identifier is not a type, or you forgot to supply a type identifier.
Error: Variable identifier expected
This happens when you pass a constant to a Inc var or Dec procedure. You can only pass variables as arguments to these functions.
Error: Integer expression expected, but got "arg1"
The compiler expects an expression of type integer, but gets a different type.
Error: Boolean expression expected, but got "arg1"
The expression must be a boolean type, it should be return true or false.
Error: Ordinal expression expected
The expression must be of ordinal type, i.e., maximum a Longint. This happens, for instance, when you specify a second argument to Inc or Dec that doesn't evaluate to an ordinal value.
Error: pointer type expected, but got "arg1"
The variable or expression isn't of the type pointer. This happens when you pass a variable that isn't a pointer to New or Dispose.
Error: class type expected, but got "arg1"
The variable of expression isn't of the type class. This happens typically when
  1. The parent class in a class declaration isn't a class.
  2. An exception handler (On) contains a type identifier that isn't a class.
Error: Variable or type indentifier expected
The argument to the High or Low function is not a variable nor a type identifier.
Error: Can't evaluate constant expression
No longer in use.
Error: Set elements are not compatible
You are trying to make an operation on two sets, when the set element types are not the same. The base type of a set must be the same when taking the union
Error: Operation not implemented for sets
several binary operations are not defined for sets like div mod ** (also >= <= for now)
Warning: Automatic type conversion from floating type to COMP which is an integer type
An implicit type conversion from a real type to a comp is encountered. Since Comp is a 64 bit integer type, this may indicate an error.
Hint: use DIV instead to get an integer result
When hints are on, then an integer division with the '/' operator will procuce this message, because the result will then be of type real
Error: string types doesn't match, because of $V+ mode
When compiling in {$V+} mode, the string you pass as a parameter should be of the exact same type as the declared parameter of the procedure.
Error: succ or pred on enums with assignments not possible
When you declared an enumeration type which has assignments in it, as in C, like in the following:
   Tenum = (a,b,e:=5);
you cannot use the Succ or Pred functions on them.
Error: Can't read or write variables of this type
You are trying to read or write a variable from or to a file of type text, which doesn't support that. Only integer types, booleans, reals, pchars and strings can be read from/written to a text file.
Error: Can't use readln or writeln on typed file
readln and writeln are only allowed for text files.
Error: Can't use read or write on untyped file.
read and write are only allowed for text or typed files.
Error: Type conflict between set elements
There is at least one set element which is of the wrong type, i.e. not of the set type.
Warning: lo/hi(dword/qword) returns the upper/lower word/dword
Free Pascal supports an overloaded version of lo/hi for longint/dword/int64/qword which returns the lower/upper word/dword of the argument. TP always uses a 16 bit lo/hi which returns always bits 0..7 for lo and the bits 8..15 for hi. If you want the TP behavior you have to type cast the argument to word/integer
Error: Integer or real expression expected
The first argument to str must a real or integer type.
Error: Wrong type arg1 in array constructor
You are trying to use a type in an array constructor which is not allowed.
Error: Incompatible type for arg no. arg1: Got arg2, expected arg3
You are trying to pass an invalid type for the specified parameter.
Error: Method (variable) and Procedure (variable) are not compatible
You can't assign a method to a procedure variable or a procedure to a method pointer.
Error: Illegal constant passed to internal math function
The constant argument passed to a ln or sqrt function is out of the definition range of these functions.
Error: Can't get the address of constants
It's not possible to get the address of a constant, because they aren't stored in memory, you can try making it a typed constant.
Error: Argument can't be assigned to
Only expressions which can be on the left side of an assignment can be passed as call by reference argument Remark: Properties can be only used on the left side of an assignment, but they can't be used as arguments
Error: Can't assign local procedure/function to procedure variable
It's not allowed to assign a local procedure/function to a procedure variable, because the calling of local procedure/function is different. You can only assign local procedure/function to a void pointer.
Error: Can't assign values to an address
It's not allowed to assign a value to an address of a variable, constant, procedure or function. You can try compiling with -So if the identifier is a procedure variable.
Error: Can't assign values to const variable
It's not allowed to assign a value to a variable which is declared as a const. This is normally a parameter declared as const, to allow changing make the parameter value or var.
Error: Array type required
If you are accessing a variable using an index '[<x>]' then the type must be an array. In FPC mode also a pointer is allowed.
Hint: Mixing signed expressions and cardinals results in a (slower) 64bit evaluation
If you divide/multiply a signed number by a cardinal (or vice versa), or if you have overflow and/or range checking turned on and use an arithmetical expression in which both signed numbers and cardinals appear, then everything has to be evaluated in 64bit which is slower than normal 32bit arithmetics.

C.5 Symbol handling

This section lists all the messages that concern the handling of symbols. This means all things that have to do with procedure and variable names.
Error: Identifier not found arg1
The compiler doesn't know this symbol. Usually happens when you misspel the name of a variable or procedure, or when you forgot to declare a variable.
Fatal: Internal Error in SymTableStack()
An internal error occurred in the compiler; If you encounter such an error, please contact the developers and try to provide an exact description of the circumstances in which the error occurs.
Error: Duplicate identifier arg1
The identifier was already declared in the current scope.
Hint: Identifier already defined in arg1 at line arg2
The identifier was already declared in a previous scope.
Error: Unknown identifier arg1
The identifier encountered hasn't been declared, or is used outside the scope where it's defined.
Error: Forward declaration not solved arg1
This can happen in two cases:
Fatal: Identifier type already defined as type
You are trying to redefine a type.
Error: Error in type definition
There is an error in your definition of a new array type:
One of the range delimiters in an array declaration is erroneous. For example, Array [1..1.25] will trigger this error.
Error: Type identifier not defined
The type identifier has not been defined yet.
Error: Forward type not resolved arg1
A symbol was forward defined, but no declaration was encountered.
Error: Only static variables can be used in static methods or outside methods
A static method of an object can only access static variables.
Error: Invalid call to tvarsym.mangledname()
An internal error occurred in the compiler; If you encounter such an error, please contact the developers and try to provide an exact description of the circumstances in which the error occurs.
Fatal: record or class type expected
The variable or expression isn't of the type record or class.
Error: Instances of classes or objects with an abstract method are not allowed
You are trying to generate an instance of a class which has an abstract method that wasn't overridden.
Warning: Label not defined arg1
A label was declared, but not defined.
Error: Label used but not defined arg1
A label was declared and used, but not defined.
Error: Illegal label declaration
This error should never happen; it occurs if a label is defined outside a procedure or function.
Error: GOTO and LABEL are not supported (use switch -Sg)
You must compile a program which has labels and goto statements with the -Sg switch. By default, label and goto aren't supported.
Error: Label not found
A goto label was encountered, but the label isn't declared.
Error: identifier isn't a label
The identifier specified after the goto isn't of type label.
Error: label already defined
You are defining a label twice. You can define a label only once.
Error: illegal type declaration of set elements
The declaration of a set contains an invalid type definition.
Error: Forward class definition not resolved arg1
You declared a class, but you didn't implement it.
Hint: Unit arg1 not used in arg2
The unit referenced in the uses clause is not used.
Hint: Parameter arg1 not used
This is a warning. The identifier was declared (locally or globally) but wasn't used (locally or globally).
Note: Local variable arg1 not used
You have declared, but not used a variable in a procedure or function implementation.
Hint: Value parameter arg1 is assigned but never used
This is a warning. The identifier was declared (locally or globally) set but not used (locally or globally).
Note: Local variable arg1 is assigned but never used
The variable in a procedure or function implementation is declared, set but never used.
Hint: Local arg1 arg2 is not used
A local symbol is never used.
Note: Private field arg1.arg2 is never used
Note: Private field arg1.arg2 is assigned but never used
Note: Private method arg1.arg2 never used
Error: Set type expected
The variable or expression isn't of type set. This happens in an in statement.
Warning: Function result does not seem to be set
You can get this warning if the compiler thinks that a function return value is not set. This will not be displayed for assembler procedures, or procedures that contain assembler blocks.
Warning: Type arg1 is not aligned correctly in current record for C
Arrays with sizes not multiples of 4 will be wrongly aligned for C structures.
Error: Unknown record field identifier arg1
The field doesn't exist in the record definition.
Warning: Local variable arg1 does not seem to be initialized
Warning: Variable arg1 does not seem to be initialized
These messages are displayed if the compiler thinks that a variable will be used (i.e. appears in the right-hand-side of an expression) when it wasn't initialized first (i.e. appeared in the left-hand side of an assigment)
Error: identifier idents no member arg1
When using the extended syntax of new, you must specify the constructor method of the class you are trying to create. The procedure you specified does not exist.
Found declaration: arg1
You get this when you use the -vb switch. In case an overloaded procedure is not found, then all candidate overloaded procedures are listed, with their parameter lists.
Error: Data segment too large (max. 2GB)
You get this when you declare an array whose size exceeds the 2GB limit.

C.6 Code generator messages

This section lists all messages that can be displayed if the code generator encounters an error condition.
Error: BREAK not allowed
You're trying to use break outside a loop construction.
Error: CONTINUE not allowed
You're trying to use continue outside a loop construction.
Error: Expression too complicated - FPU stack overflow
Your expression is too long for the compiler. You should try dividing the construct over multiple assignments.
Error: Illegal expression
This can occur under many circumstances. Mostly when trying to evaluate constant expressions.
Error: Invalid integer expression
You made an expression which isn't an integer, and the compiler expects the result to be an integer.
Error: Illegal qualifier
One of the following is happening :
Error: High range limit < low range limit
You are declaring a subrange, and the lower limit is higher than the high limit of the range.
Error: Illegal counter variable
The type of a for loop variable must be an ordinal type. Loop variables cannot be reals or strings.
Error: Can't determine which overloaded function to call
You're calling overloaded functions with a parameter that doesn't correspond to any of the declared function parameter lists. e.g. when you have declared a function with parameters word and longint, and then you call it with a parameter which is of type integer.
Error: Parameter list size exceeds 65535 bytes
The I386 processor limits the parameter list to 65535 bytes (the RET instruction causes this)
Error: Illegal type conversion
When doing a type-cast, you must take care that the sizes of the variable and the destination type are the same.
Conversion between ordinals and pointers is not portable across platforms
If you typecast a pointer to a longint, this code will not compile on a machine using 64bit for pointer storage.
Error: File types must be var parameters
You cannot specify files as value parameters, i.e. they must always be declared var parameters.
Error: The use of a far pointer isn't allowed there
Free Pascal doesn't support far pointers, so you cannot take the address of an expression which has a far reference as a result. The mem construct has a far reference as a result, so the following code will produce this error:
 var p : pointer;
 ...
 p:=@mem[a000:000];
Error: illegal call by reference parameters
You are trying to pass a constant or an expression to a procedure that requires a var parameter. Only variables can be passed as a var parameter.
Error: EXPORT declared functions can't be called
No longer in use.
Warning: Possible illegal call of constructor or destructor (doesn't match to this context)
No longer in use.
Note: Inefficient code
You construction seems dubious to the compiler.
Warning: unreachable code
You specified a loop which will never be executed. Example:
 while false do
   begin
   {.. code ...}
   end;
Error: procedure call with stackframe ESP/SP
The compiler encountered a procedure or function call inside a procedure that uses a ESP/SP stackframe. Normally, when a call is done the procedure needs a EBP stackframe.
Error: Abstract methods can't be called directly
You cannot call an abstract method directy, instead you must call a overriding child method, because an abstract method isn't implemented.
Fatal: Internal Error in getfloatreg(), allocation failure
An internal error occurred in the compiler; If you encounter such an error, please contact the developers and try to provide an exact description of the circumstances in which the error occurs.
Fatal: Unknown float type
The compiler cannot determine the kind of float that occurs in an expression.
Fatal: SecondVecn() base defined twice
An internal error occurred in the compiler; If you encounter such an error, please contact the developers and try to provide an exact description of the circumstances in which the error occurs.
Fatal: Extended cg68k not supported
The extended type is not supported on the m68k platform.
Fatal: 32-bit unsigned not supported in MC68000 mode
The cardinal is not supported on the m68k platform.
Fatal: Internal Error in secondinline()
An internal error occurred in the compiler; If you encounter such an error, please contact the developers and try to provide an exact description of the circumstances in which the error occurs.
Register arg1 weight arg2 arg3
Debugging message. Shown when the compiler considers a variable for keeping in the registers.
Error: Stack limit excedeed in local routine
Your code requires a too big stack. Some operating systems pose limits on the stack size. You should use less variables or try ro put large variables on the heap.
Stack frame is omitted
Some procedure/functions do not need a complete stack-frame, so it is omitted. This message will be displayed when the -vd switch is used.
Error: Object or class methods can't be inline.
You cannot have inlined object methods.
Error: Procvar calls can't be inline.
A procedure with a procedural variable call cannot be inlined.
Error: No code for inline procedure stored
The compiler couldn't store code for the inline procedure.
Error: Direct call of interrupt procedure arg1 is not possible
You can not call an interrupt procedure directly from FPC code
Error: Element zero of an ansi/wide- or longstring can't be accessed, use (set)length instead
You should use setlength to set the length of an ansi/wide/longstring and length to get the length of such kinf of string
Error: Include and exclude not implemented in this case
include and exclude are only partially implemented for i386 processors and not at all for m68k processors.
Error: Constructors or destructors can not be called inside a 'with' clause
Inside a With clause you cannot call a constructor or destructor for the object you have in the with clause.
Error: Cannot call message handler method directly
A message method handler method can't be called directly if it contains an explicit self argument
Error: Jump in or outside of an exception block
It isn't allowed to jump in or outside of an exception block like try..finally..end;:
 label 1;

 ...

 try
    if not(final) then
      goto 1;   // this line will cause an error
 finally
   ...
 end;
 1:
 ...
Error: Control flow statements aren't allowed in a finally block
It isn't allowed to use the control flow statements break, continue and exit inside a finally statement. The following example shows the problem:
 ...
   try
      p;
   finally
      ...
      exit;  // This exit ISN'T allowed
   end;
 ...
If the procedure p raises an exception the finally block is executed. If the execution reaches the exit, it's unclear what to do: exiting the procedure or searching for another exception handler

C.7 Errors of assembling/linking stage

This section lists errors that occur when the compiler is processing the command line or handling the configuration files.
Warning: Source operating system redefined
Info: Assembling (pipe) arg1
Error: Can't create assember file: arg1
The mentioned file can't be create. Check if you've permission to create this file
Error: Can't create object file: arg1
The mentioned file can't be create. Check if you've permission to create this file
Error: Can't create archive file: arg1
The mentioned file can't be create. Check if you've permission to create this file
Warning: Assembler arg1 not found, switching to external assembling
Using assembler: arg1
Warning: Error while assembling exitcode arg1
Warning: Can't call the assembler, error arg1 switching to external assembling
Info: Assembling arg1
Info: Assembling smartlink arg1
Warning: Object arg1 not found, Linking may fail !
Warning: Library arg1 not found, Linking may fail !
Warning: Error while linking
Warning: Can't call the linker, switching to external linking
Info: Linking arg1
Warning: Util arg1 not found, switching to external linking
Using util arg1
Error: Creation of Executables not supported
Error: Creation of Dynamic/Shared Libraries not supported
Info: Closing script arg1
Warning: resource compiler not found, switching to external mode
Info: Compiling resource arg1
unit arg1 can't be static linked, switching to smart linking
unit arg1 can't be smart linked, switching to static linking
unit arg1 can't be shared linked, switching to static linking
Error: unit arg1 can't be smart or static linked
Error: unit arg1 can't be shared or static linked

C.8 Unit loading messages.

This section lists all messages that can occur when the compiler is loading a unit from disk into memory. Many of these mesages are informational messages.
Unitsearch: arg1
When you use the -vt, the compiler tells you where it tries to find unit files.
PPU Loading arg1
When the -vt switch is used, the compiler tells you what units it loads.
PPU Name: arg1
When you use the -vu flag, the unit name is shown.
PPU Flags: arg1
When you use the -vu flag, the unit flags are shown.
PPU Crc: arg1
When you use the -vu flag, the unit CRC check is shown.
PPU Time: arg1
When you use the -vu flag, the time the unit was compiled is shown.
PPU File too short
The ppufile is too short, not all declarations are present.
PPU Invalid Header (no PPU at the begin)
A unit file contains as the first three bytes the ascii codes of PPU
PPU Invalid Version arg1
This unit file was compiled with a different version of the compiler, and cannot be read.
PPU is compiled for an other processor
This unit file was compiled for a different processor type, and cannot be read
PPU is compiled for an other target
This unit file was compiled for a different processor type, and cannot be read
PPU Source: arg1
When you use the -vu flag, the unit CRC check is shown.
Writing arg1
When you specify the -vu switch, the compiler will tell you where it writes the unit file.
Fatal: Can't Write PPU-File
An error occurred when writing the unit file.
Fatal: Error reading PPU-File
This means that the unit file was corrupted, and contains invalid information. Recompilation will be necessary.
Fatal: unexpected end of PPU-File
Unexpected end of file.
Fatal: Invalid PPU-File entry: arg1
The unit the compiler is trying to read is corrupted, or generated with a newer version of the compiler.
Fatal: PPU Dbx count problem
There is an inconsistency in the debugging information of the unit.
Error: Illegal unit name: arg1
The name of the unit doesn't match the file name.
Fatal: Too much units
Free Pascal has a limit of 1024 units in a program. You can change this behavior by changing the maxunits constant in the files.pas file of the compiler, and recompiling the compiler.
Fatal: Circular unit reference between arg1 and arg2
Two units are using each other in the interface part. This is only allowed in the implementation part. At least one unit must contain the other one in the implementation section.
Fatal: Can't compile unit arg1, no sources available
A unit was found that needs to be recompiled, but no sources are available.
Fatal: Can't find unit arg1
You tried to use a unit of which the PPU file isn't found by the compiler. Check your config files for the unit pathes
Warning: Unit arg1 was not found but arg2 exists
Fatal: Unit arg1 searched but arg2 found
Dos truncation of 8 letters for unit PPU files may lead to problems when unit name is longer than 8 letters.
Warning: Compiling the system unit requires the -Us switch
When recompiling the system unit (it needs special treatment), the -Us must be specified.
Fatal: There were arg1 errors compiling module, stopping
When the compiler encounters a fatal error or too many errors in a module then it stops with this message.
Load from arg1 (arg2) unit arg3
When you use the -vu flag, which unit is loaded from which unit is shown.
Recompiling arg1, checksum changed for arg2
Recompiling arg1, source found only
When you use the -vu flag, these messages tell you why the current unit is recompiled.
Recompiling unit, static lib is older than ppufile
When you use the -vu flag, the compiler warns if the static library of the unit are older than the unit file itself.
Recompiling unit, shared lib is older than ppufile
When you use the -vu flag, the compiler warns if the shared library of the unit are older than the unit file itself.
Recompiling unit, obj and asm are older than ppufile
When you use the -vu flag, the compiler warns if the assembler or object file of the unit are older than the unit file itself.
Recompiling unit, obj is older than asm
When you use the -vu flag, the compiler warns if the assembler file of the unit is older than the object file of the unit.
Parsing interface of arg1
When you use the -vu flag, the compiler warns that it starts parsing the interface part of the unit
Parsing implementation of arg1
When you use the -vu flag, the compiler warns that it starts parsing the implementation part of the unit
Second load for unit arg1
When you use the -vu flag, the compiler warns that it starts recompiling a unit for the second time. This can happend with interdepend units.
PPU Check file arg1 time arg2
When you use the -vu flag, the compiler show the filename and date and time of the file which a recompile depends on
Hint: Conditional arg1 was not set at startup in last compilation of arg2
when recompilation of an unit is required the compiler will check that the same conditionals are set for the recompiliation. The compiler has found a conditional that currently is defined, but was not used the last time the unit was compiled.
Hint: Conditional arg1 was set at startup in last compilation of arg2
when recompilation of an unit is required the compiler will check that the same conditionals are set for the recompiliation. The compiler has found a conditional that was used the last time the unit was compiled, but the conditional is currently not defined.

C.9 Command-line handling errors

This section lists errors that occur when the compiler is processing the command line or handling the configuration files.
Warning: Only one source file supported
You can specify only one source file on the command line. The first one will be compiled, others will be ignored. This may indicate that you forgot a '-' sign.
Warning: DEF file can be created only for OS/2
This option can only be specified when you're compiling for OS/2
Error: nested response files are not supported
you cannot nest response files with the @file command-line option.
Fatal: No source file name in command line
The compiler expects a source file name on the command line.
Note: No option inside arg1 config file
The compiler didn't find any option in that config file.
Error: Illegal parameter: arg1
You specified an unknown option.
Hint: -? writes help pages
When an unknown option is given, this message is diplayed.
Fatal: Too many config files nested
You can only nest up to 16 config files.
Fatal: Unable to open file arg1
The option file cannot be found.
Note: Reading further options from arg1
Displayed when you have notes turned on, and the compiler switches to another options file.
Warning: Target is already set to: arg1
Displayed if more than one -T option is specified.
Warning: Shared libs not supported on DOS platform, reverting to static
If you specify -CD for the DOS platform, this message is displayed. The compiler supports only static libraries under DOS
Fatal: too many IF(N)DEFs
the #IF(N)DEF statements in the options file are not balanced with the #ENDIF statements.
Fatal: too many ENDIFs
the #IF(N)DEF statements in the options file are not balanced with the #ENDIF statements.
Fatal: open conditional at the end of the file
the #IF(N)DEF statements in the options file are not balanced with the #ENDIF statements.
Warning: Debug information generation is not supported by this executable
It is possible to have a compiler executable that doesn't support the generation of debugging info. If you use such an executable with the -g switch, this warning will be displayed.
Hint: Try recompiling with -dGDB
It is possible to have a compiler executable that doesn't support the generation of debugging info. If you use such an executable with the -g switch, this warning will be displayed.
Error: You are using the obsolete switch arg1
this warns you when you use a switch that is not needed/supported anymore. It is recommended that you remove the switch to overcome problems in the future, when the switch meaning may change.
Error: You are using the obsolete switch arg1, please use arg2
this warns you when you use a switch that is not supported anymore. You must now use the second switch instead. It is recommended that you change the switch to overcome problems in the future, when the switch meaning may change.
Note: Switching assembler to default source writing assembler
this notifies you that the assembler has been changed because you used the -a switch which can't be used with a binary assembler writer.
Warning: Assembler output selected "arg1" is not compatible with "arg2"
Warning: "arg1" assembler use forced
The assembler output selected can not generate object files with the correct format. Therefore, the default assembler for this target is used instead.

C.10 Assembler reader errors.

This section lists the errors that are generated by the inline assembler reader. They are not the messages of the assembler itself.

C.10.1 General assembler errors

Divide by zero in asm evaluator
This fatal error is reported when a constant assembler expressions does a division by zero.

Evaluator stack overflow, Evaluator stack underflow
These fatal errors are reported when a constant assembler expression is too big to evaluate by the constant parser. Try reducing the number of terms.

Invalid numeric format in asm evaluator
This fatal error is reported when a non-numeric value is detected by the constant parser. Normally this error should never occur.

Invalid Operator in asm evaluator
This fatal error is reported when a mathematical operator is detected by the constant parser. Normally this error should never occur.

Unknown error in asm evaluator
This fatal error is reported when an internal error is detected by the constant parser. Normally this error should never occur.

Invalid numeric value
This warning is emitted when a conversion from octal,binary or hexadecimal to decimal is outside of the supported range.

Escape sequence ignored
This error is emitted when a non ANSI C escape sequence is detected in a C string.

Asm syntax error - Prefix not found
This occurs when trying to use a non-valid prefix instruction

Asm syntax error - Trying to add more than one prefix
This occurs when you try to add more than one prefix instruction

Asm syntax error - Opcode not found
You have tried to use an unsupported or unknown opcode

Constant value out of bounds
This error is reported when the constant parser determines that the value you are using is out of bounds, either with the opcode or with the constant declaration used.

Non-label pattern contains @
This only applied to the m68k and Intel styled assembler, this is reported when you try to use a non-label identifier with a '@' prefix.
Internal error in Findtype()
Internal Error in ConcatOpcode()
Internal Errror converting binary
Internal Errror converting hexadecimal
Internal Errror converting octal
Internal Error in BuildScaling()
Internal Error in BuildConstant()
internal error in BuildReference()
internal error in HandleExtend()
Internal error in ConcatLabeledInstr()
These errors should never occur, if they do then you have found a new bug in the assembler parsers. Please contact one of the developers.
Opcode not in table, operands not checked
This warning only occurs when compiling the system unit, or related files. No checking is performed on the operands of the opcodes.

@CODE and @DATA not supported
This Turbo Pascal construct is not supported.
SEG and OFFSET not supported
This Turbo Pascal construct is not supported.
Modulo not supported
Modulo constant operation is not supported.
Floating point binary representation ignored
Floating point hexadecimal representation ignored
Floating point octal representation ignored
These warnings occur when a floating point constant are declared in a base other then decimal. No conversion can be done on these formats. You should use a decimal representation instead.
Identifier supposed external
This warning occurs when a symbol is not found in the symolb table, it is therefore considered external.
Functions with void return value can't return any value in asm code
Only routines with a return value can have a return value set.

Error in binary constant
Error in octal constant
Error in hexadecimal constant
Error in integer constant
These errors are reported when you tried using an invalid constant expression, or that the value is out of range.

Invalid labeled opcode
Asm syntax error - error in reference
Invalid Opcode
Invalid combination of opcode and operands
Invalid size in reference
Invalid middle sized operand
Invalid three operand opcode
Assembler syntax error
Invalid operand type
You tried using an invalid combination of opcode and operands, check the syntax and if you are sure it is correct, please contact one of the developers.

Unknown identifier
The identifier you are trying to access does not exist, or is not within the current scope.

Trying to define an index register more than once
Trying to define a segment register twice
Trying to define a base register twice
You are trying to define an index/segment register more then once.

Invalid field specifier
The record or object field you are trying to access does not exist, or is incorrect.

Invalid scaling factor
Invalid scaling value
Scaling value only allowed with index
Allowed scaling values are 1,2,4 or 8.

Cannot use SELF outside a method
You are trying to access the SELF identifier for objects outside a method.

Invalid combination of prefix and opcode
This opcode cannot be prefixed by this instruction

Invalid combination of override and opcode
This opcode cannot be overriden by this combination

Too many operands on line
At most three operand instructions exist on the m68k, and i386, you are probably trying to use an invalid syntax for this opcode.

Duplicate local symbol
You are trying to redefine a local symbol, such as a local label.

Unknown label identifer
Undefined local symbol
local symbol not found inside asm statement
This label does not seem to have been defined in the current scope

Assemble node syntax error
Not a directive or local symbol
The assembler statement is invalid, or you are not using a recognized directive.

C.10.2 I386 specific errors

repeat prefix and a segment override on <= i386 ...
A problem with interrupts and a prefix instruction may occur and may cause false results on 386 and earlier computers.

Fwait can cause emulation problems with emu387
This warning is reported when using the FWAIT instruction, it can cause emulation problems on systems which use the em387.dxe emulator.

You need GNU as version >= 2.81 to compile this MMX code
MMX assembler code can only be compiled using GAS v2.8.1 or later.

NEAR ignored
FAR ignored
NEAR and FAR are ignored in the intel assemblers, but are still accepted for compatiblity with the 16-bit code model.

Invalid size for MOVSX/MOVZX

16-bit base in 32-bit segment
16-bit index in 32-bit segment
16-bit addressing is not supported, you must use 32-bit addressing.

Constant reference not allowed
It is not allowed to try to address a constant memory address in protected mode.

Segment overrides not supported
Intel style (eg: rep ds stosb) segment overrides are not support by the assembler parser.

Expressions of the form [sreg:reg...] are currently not supported
To access a memory operand in a different segment, you should use the sreg:[reg...] snytax instead of [sreg:reg...]

Size suffix and destination register do not match
In intel AT&T syntax, you are using a register size which does not concord with the operand size specified.

Invalid assembler syntax. No ref with brackets
Trying to use a negative index register
Local symbols not allowed as references
Invalid operand in bracket expression
Invalid symbol name:
Invalid Reference syntax
Invalid string as opcode operand:
Null label references are not allowed
Using a defined name as a local label
Invalid constant symbol
Invalid constant expression
/ at beginning of line not allowed
NOR not supported
Invalid floating point register name
Invalid floating point constant:
Asm syntax error - Should start with bracket
Asm syntax error - register:
Asm syntax error - in opcode operand
Invalid String expression
Constant expression out of bounds
Invalid or missing opcode
Invalid real constant expression
Parenthesis are not allowed
Invalid Reference
Cannot use __SELF outside a method
Cannot use __OLDEBP outside a nested procedure
Invalid segment override expression
Strings not allowed as constants
Switching sections is not allowed in an assembler block
Invalid global definition
Line separator expected
Invalid local common definition
Invalid global common definition
assembler code not returned to text
invalid opcode size
Invalid character: <
Invalid character: >
Unsupported opcode
Invalid suffix for intel assembler
Extended not supported in this mode
Comp not supported in this mode
Invalid Operand:
Override operator not supported

C.10.3 m68k specific errors.

Increment and Decrement mode not allowed together
You are trying to use dec/inc mode together.

Invalid Register list in movem/fmovem
The register list is invalid, normally a range of registers should be separated by - and individual registers should be separated by a slash.
Invalid Register list for opcode
68020+ mode required to assemble



root
2000-12-20