Re: GNU/Linker and Microsoft object code.

[Pascal Obry]

Hi Nick,

Here is a simple way to reproduce the problem using only C code.

File simple.c
<<
#include <stdio.h>

int a = 34;
int b = 12;

void c_simple (void);

int
main (void)
{
  printf ("a = %d\n", a);
  printf ("b = %d\n", b);
  c_simple ();
}
>>

File c_vsimple.c

<<
#include <stdio.h>

int u = 2;
int c = 0;

void
c_simple (void)
{
  printf ("local C = %d\n", c);
}
>>

How to reproduce:

    $ gcc -c simple.c
    $ cl /C /MD c_vsimple.c
    $ ld --print-map -o csimple.exe d:/usr/gnat/lib/crt2.o 
-Ld:/usr/gnat/lib/gcc-lib/pentium-mingw32msv/2.8.1 -Ld:/usr/gnat/lib simple.o 
c_vsimple.obj -lmingw32 -lgcc -lmoldname -lmsvcrt -lkernel32 -ladvapi32 
-lshell32 -lmingw32 -lgcc -lmoldname -lmsvcrt

In this map we have 'a' and 'b' defined, but 'c' is not ! All variables in C
code compiled with Microsoft Linker and initialized to 0 is not mapped. This
is the bug and you should be able to reproduce it.

Do you see where the problem could come from ?

Cheers,
Pascal.

-- 

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--| Pascal Obry                           Team-Ada Member
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--|------------------------------------------------------
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