[fpc-pascal] Stack trace different for Windows and Linux

[Terry Mead]

Gentlemen,
I'm a new poster to the mail list.  I have a problem logging call stack 
trace info following an exception.
The following simple program generates a divide by zero error.

PROGRAM Test;
VAR i, j, k : Integer;
PROCEDURE test1;
    BEGIN
      i := i - 1;
      k := j DIV i;
    END; {test}

PROCEDURE test2;
    BEGIN
      test1;
    END; {taskProc}

BEGIN
   i := 1; j := 1;
   test2;
END.

When compiled and run under Windows it generates the stack trace:
Runtime error 200 at $00401404
   $00401404  TEST1,  line 6 of test.pas
   $00401428  TEST2,  line 11 of test.pas
   $00401451  main,  line 16 of test.pas
   $004077D1

Which is what you would expect.  When compiled and run on an ARM 
processor under Linux (Debian Jessie) it generates the stack trace:
Runtime error 200 at $000101AC
   $000101AC  TEST2,  line 11 of test.pas
   $000101E0  main,  line 16 of test.pas
   $00010118

Ie. it does not contain the reference to the actual line which caused 
the problem.  The first entry is to the return address of the faulting 
procedure.

The same compile options are used for both and include the -gl option.  
FPC version is 2.6.4.

Anyone have any idea why this happens or more usefully how the Linux 
result can be fixed ?

Thanks,
Terry






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