Bug#472867: more simplier loop (asm x86 corrected)

[Cyprien LAPLACE <cyprien+debianbug@cypou.net>]

Hum, well .. another sample test:

/* c.c */

extern void func(void*);

void test()
{
    register char (*foo)[32] = (typeof(foo))0-1024;
    register int index;
    for(index=0;index<1024;index++) {
        func(foo++);
    }
}

gives, in x86_32:

$ gcc-4.3 -c c.c -O3 && objdump -d c.o

c.o:     file format elf32-i386

Disassembly of section .text:

00000000 <test>:
   0:   55                      push   %ebp
   1:   b8 00 80 ff ff          mov    $0xffff8000,%eax
   6:   89 e5                   mov    %esp,%ebp
   8:   53                      push   %ebx
   9:   83 ec 04                sub    $0x4,%esp
   c:   8d 74 26 00             lea    0x0(%esi),%esi
  10:   8d 58 20                lea    0x20(%eax),%ebx
  13:   89 04 24                mov    %eax,(%esp)
  16:   e8 fc ff ff ff          call   17 <test+0x17>
  1b:   89 d8                   mov    %ebx,%eax
  1d:   eb f1                   jmp    10 <test+0x10>


still an infinite loop...

Cyprien