C.6 Code generator messages

This section lists all messages that can be displayed if the code generator encounters an error condition.

Error: Parameter list size exceeds 65535 bytes

The I386 processor limits the parameter list to 65535 bytes. (The RET instruction causes this.)

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: EXPORT declared functions can’t be called

No longer in use.

Warning: Possible illegal call of constructor or destructor

The compiler detected that a constructor or destructor is called within a a method. This will probably lead to problems, since constructors / destructors require parameters on entry.

Note: Inefficient code

Your statement seems dubious to the compiler.

Warning: unreachable code

You specified a construct which will never be executed. Example:

 while false do  
   begin  
   {.. code ...}  
   end;  
 

Error: Abstract methods can’t be called directly

You cannot call an abstract method directly. Instead, you must call an overriding child method, because an abstract method isn’t implemented.

Register arg1 weight arg2 arg3

Debugging message. Shown when the compiler considers a variable for keeping in the registers.

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 cannot 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: 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 string type.

Error: Constructors or destructors cannot 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 methods directly

A message method handler method cannot be called directly if it contains an explicit Self argument.

Error: Jump in or outside of an exception block

It is not allowed to jump in or outside of an exception block like try..finally..end;. For example, the following code will produce this error:

 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: exit the procedure or search for another exception handler.

Warning: Parameters size exceeds limit for certain cpu’s

This indicates that you are declaring more than 64K of parameters, which might not be supported on other processor targets.

Warning: Local variable size exceed limit for certain cpu’s

This indicates that you are declaring more than 32K of local variables, which might not be supported on other processor targets.

Error: Local variables size exceeds supported limit

This indicates that you are declaring more than 32K of local variables, which is not supported by this processor.

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.

Fatal: Unknown compilerproc ”arg1”. Check if you use the correct run time library.

The compiler expects that the runtime library contains certain subroutines. If you see this error and you didn’t change the runtime library code, it’s very likely that the runtime library you’re using doesn’t match the compiler in use. If you changed the runtime library this error means that you removed a subroutine which the compiler needs for internal use.

Fatal: Cannot find system type ”arg1”. Check if you use the correct run time library.

The compiler expects that the runtime library contains certain type definitions. If you see this error and you didn’t change the runtime library code, it’s very likely that the runtime library you’re using doesn’t match the compiler in use. If you changed the runtime library this error means that you removed a type which the compiler needs for internal use.

Hint: Inherited call to abstract method ignored

This message appears only in Delphi mode when you call an abstract method of a parent class via inherited;. The call is then ignored.

Error: Goto label ”arg1” not defined or optimized away

The label used in the goto definition is not defined or optimized away by the unreachable code elemination.