Help! Program crashed when call the inline assembly function continuously

["spark.z" <spark dot yj dot zhao at gmail dot com>]

Eclipse + gcc-4.4.1, compiled the program with optimization flag -O2
I wrote a inline function with inlined assembly
void pincrement(int* target)
{
    __asm__ __volatile__ ("pushl %eax");
    __asm__ __volatile__ ("lock ; incl (%%eax)" ::"a"(target));
    __asm__ __volatile__ ("popl %eax");
}

and call it in the main function like:
int main()
{
  static int my_an = 0;
  pincrement(&my_an);
  pincrement(&my_an);
  pincrement(&my_an);
  printf("my_an is %d\n",my_an);
}

It crashed when run the app. So I check the assembly code of the app. The
complier translate the three pincrement call become:

push    eax
mov     eax, offset dword_474048
lock inc dword ptr [eax]
pop     eax

push    eax
lock inc dword ptr [eax]
pop     eax

push    eax
lock inc dword ptr [eax]
pop     eax

It only has one "mov     eax, offset dword_474048" sentence in it. 
How can I tell the gcc complier to inline the whole assembly function three
times completely? 
:working:
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