La vérité est ailleurs

Après simulation, je pense que ton bug se trouve ailleurs.

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#include <stdlib.h>
#include <stdio.h>

#define NAME "plop"

typedef struct Game
{
char *name;
int data;
} game_t;

int count(void)
{
return 42;
}

int main(void)
{
game_t *games[count()]; /* je savais pas que ça marchait ! */
game_t *game = NULL;
const char *plop = NAME;
int i = 0;

/* alloue un game */
game = malloc(sizeof(*game));
if (game == NULL) { perror("malloc()"); exit(1); }

game->name = calloc(strlen(NAME) + 1, sizeof(char));
if (game->name == NULL) { perror("calloc()"); exit(1); }

/* initialise */
memcpy(game->name, plop, strlen(plop));
game->data = 1337;

/* enregistrement */
games[i ++] = game;
printf("Supaire nom : %s\n", games[i - 1]->name);
printf("data : %i\n", games[i - 1]->data);

/* suppression */
free(games[0]->name);

#ifdef CRASHME
printf("Supaire nom : %s\n", games[i - 1]->name);
#endif
printf("data : %i\n", games[i - 1]->data);

free(games[0]);

#ifdef CRASHME
printf("Supaire nom : %s\n", games[i - 1]->name);
printf("data : %i\n", games[i - 1]->data);
#endif

return 0;
}

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jaguarwan@Jaguar:~$ gcc coincoin.c
jaguarwan@Jaguar:~$ valgrind --tool=memcheck --leak-check=yes ./a.out
==5996== Memcheck, a memory error detector for x86-linux.
==5996== Copyright (C) 2002-2004, and GNU GPL'd, by Julian Seward et al.
==5996== Using valgrind-2.2.0, a program supervision framework for x86-linux.
==5996== Copyright (C) 2000-2004, and GNU GPL'd, by Julian Seward et al.
==5996== For more details, rerun with: -v
==5996==
Supaire nom : plop
data : 1337
data : 1337
==5996==
==5996== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 11 from 1)
==5996== malloc/free: in use at exit: 0 bytes in 0 blocks.
==5996== malloc/free: 2 allocs, 2 frees, 13 bytes allocated.
==5996== For counts of detected errors, rerun with: -v
==5996== No malloc'd blocks -- no leaks are possible.

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jaguarwan@Jaguar:~$ gcc -DCRASHME coincoin.c
jaguarwan@Jaguar:~$ valgrind --tool=memcheck --leak-check=yes ./a.out
==6123== Memcheck, a memory error detector for x86-linux.
==6123== Copyright (C) 2002-2004, and GNU GPL'd, by Julian Seward et al.
==6123== Using valgrind-2.2.0, a program supervision framework for x86-linux.
==6123== Copyright (C) 2000-2004, and GNU GPL'd, by Julian Seward et al.
==6123== For more details, rerun with: -v
==6123==
Supaire nom : plop
data : 1337
==6123== Invalid read of size 1
==6123== at 0x1B902778: strlen (in /usr/lib/valgrind/vgpreload_memcheck.so)
==6123== by 0x1B9648E4: _IO_vfprintf_internal (in /lib/libc-2.3.4.so)
==6123== by 0x1B96B0F1: _IO_printf (in /lib/libc-2.3.4.so)
==6123== by 0x8048649: main (in /home/jaguarwan/a.out)
==6123== Address 0x1BA46060 is 0 bytes inside a block of size 5 free'd
==6123== at 0x1B9033ED: free (in /usr/lib/valgrind/vgpreload_memcheck.so)
==6123== by 0x804862D: main (in /home/jaguarwan/a.out)
==6123==
==6123== Invalid read of size 1
==6123== at 0x1B902781: strlen (in /usr/lib/valgrind/vgpreload_memcheck.so)
==6123== by 0x1B9648E4: _IO_vfprintf_internal (in /lib/libc-2.3.4.so)
==6123== by 0x1B96B0F1: _IO_printf (in /lib/libc-2.3.4.so)
==6123== by 0x8048649: main (in /home/jaguarwan/a.out)
==6123== Address 0x1BA46061 is 1 bytes inside a block of size 5 free'd
==6123== at 0x1B9033ED: free (in /usr/lib/valgrind/vgpreload_memcheck.so)
==6123== by 0x804862D: main (in /home/jaguarwan/a.out)
==6123==
==6123== Invalid read of size 1
==6123== at 0x1B985A01: _IO_file_xsputn@@GLIBC_2.1 (in /lib/libc-2.3.4.so)
==6123== by 0x1B964874: _IO_vfprintf_internal (in /lib/libc-2.3.4.so)
==6123== by 0x1B96B0F1: _IO_printf (in /lib/libc-2.3.4.so)
==6123== by 0x8048649: main (in /home/jaguarwan/a.out)
==6123== Address 0x1BA46063 is 3 bytes inside a block of size 5 free'd
==6123== at 0x1B9033ED: free (in /usr/lib/valgrind/vgpreload_memcheck.so)
==6123== by 0x804862D: main (in /home/jaguarwan/a.out)
==6123==
==6123== Invalid read of size 1
==6123== at 0x1B9858F0: _IO_file_xsputn@@GLIBC_2.1 (in /lib/libc-2.3.4.so)
==6123== by 0x1B964874: _IO_vfprintf_internal (in /lib/libc-2.3.4.so)
==6123== by 0x1B96B0F1: _IO_printf (in /lib/libc-2.3.4.so)
==6123== by 0x8048649: main (in /home/jaguarwan/a.out)
==6123== Address 0x1BA46060 is 0 bytes inside a block of size 5 free'd
==6123== at 0x1B9033ED: free (in /usr/lib/valgrind/vgpreload_memcheck.so)
==6123== by 0x804862D: main (in /home/jaguarwan/a.out)
Supaire nom : plop
data : 1337
==6123==
==6123== Invalid read of size 4
==6123== at 0x8048687: main (in /home/jaguarwan/a.out)
==6123== Address 0x1BA46028 is 0 bytes inside a block of size 8 free'd
==6123== at 0x1B9033ED: free (in /usr/lib/valgrind/vgpreload_memcheck.so)
==6123== by 0x8048676: main (in /home/jaguarwan/a.out)
==6123==
==6123== Invalid read of size 1
==6123== at 0x1B902778: strlen (in /usr/lib/valgrind/vgpreload_memcheck.so)
==6123== by 0x1B9648E4: _IO_vfprintf_internal (in /lib/libc-2.3.4.so)
==6123== by 0x1B96B0F1: _IO_printf (in /lib/libc-2.3.4.so)
==6123== by 0x8048692: main (in /home/jaguarwan/a.out)
==6123== Address 0x1BA46060 is 0 bytes inside a block of size 5 free'd
==6123== at 0x1B9033ED: free (in /usr/lib/valgrind/vgpreload_memcheck.so)
==6123== by 0x804862D: main (in /home/jaguarwan/a.out)
==6123==
==6123== Invalid read of size 1
==6123== at 0x1B902781: strlen (in /usr/lib/valgrind/vgpreload_memcheck.so)
==6123== by 0x1B9648E4: _IO_vfprintf_internal (in /lib/libc-2.3.4.so)
==6123== by 0x1B96B0F1: _IO_printf (in /lib/libc-2.3.4.so)
==6123== by 0x8048692: main (in /home/jaguarwan/a.out)
==6123== Address 0x1BA46061 is 1 bytes inside a block of size 5 free'd
==6123== at 0x1B9033ED: free (in /usr/lib/valgrind/vgpreload_memcheck.so)
==6123== by 0x804862D: main (in /home/jaguarwan/a.out)
==6123==
==6123== Invalid read of size 1
==6123== at 0x1B985A01: _IO_file_xsputn@@GLIBC_2.1 (in /lib/libc-2.3.4.so)
==6123== by 0x1B964874: _IO_vfprintf_internal (in /lib/libc-2.3.4.so)
==6123== by 0x1B96B0F1: _IO_printf (in /lib/libc-2.3.4.so)
==6123== by 0x8048692: main (in /home/jaguarwan/a.out)
==6123== Address 0x1BA46063 is 3 bytes inside a block of size 5 free'd
==6123== at 0x1B9033ED: free (in /usr/lib/valgrind/vgpreload_memcheck.so)
==6123== by 0x804862D: main (in /home/jaguarwan/a.out)
==6123==
==6123== Invalid read of size 1
==6123== at 0x1B9858F0: _IO_file_xsputn@@GLIBC_2.1 (in /lib/libc-2.3.4.so)
==6123== by 0x1B964874: _IO_vfprintf_internal (in /lib/libc-2.3.4.so)
==6123== by 0x1B96B0F1: _IO_printf (in /lib/libc-2.3.4.so)
==6123== by 0x8048692: main (in /home/jaguarwan/a.out)
==6123== Address 0x1BA46060 is 0 bytes inside a block of size 5 free'd
==6123== at 0x1B9033ED: free (in /usr/lib/valgrind/vgpreload_memcheck.so)
==6123== by 0x804862D: main (in /home/jaguarwan/a.out)
Supaire nom : plop
==6123==
==6123== Invalid read of size 4
==6123== at 0x80486A3: main (in /home/jaguarwan/a.out)
==6123== Address 0x1BA4602C is 4 bytes inside a block of size 8 free'd
==6123== at 0x1B9033ED: free (in /usr/lib/valgrind/vgpreload_memcheck.so)
==6123== by 0x8048676: main (in /home/jaguarwan/a.out)
data : 1337
==6123==
==6123== ERROR SUMMARY: 28 errors from 10 contexts (suppressed: 11 from 1)
==6123== malloc/free: in use at exit: 0 bytes in 0 blocks.
==6123== malloc/free: 2 allocs, 2 frees, 13 bytes allocated.
==6123== For counts of detected errors, rerun with: -v
==6123== No malloc'd blocks -- no leaks are possible.