------- Comment #6 from aleksey dot shipilev at gmail dot com 2008-01-08 20:37 ------- Here you go, Andrew.
# gdb ./a.out GNU gdb 6.7.1 (gdb) set disassembly-flavor intel (gdb) run Starting program: ~/src/gcc-b/a.out before: output=bffa911c, buf=bffa8f1c after: output=bffa911c, buf=bffa8f1c sizeof(buf)=512 result=0 OK on reading from device Program received signal SIGSEGV, Segmentation fault. 0x08048571 in main () at test2.c:39 39 } (gdb) disassemble Dump of assembler code for function main: 0x08048480 <main+0>: lea ecx,[esp+0x4] 0x08048484 <main+4>: and esp,0xfffffff0 0x08048487 <main+7>: push DWORD PTR [ecx-0x4] 0x0804848a <main+10>: push ebp 0x0804848b <main+11>: mov ebp,esp 0x0804848d <main+13>: sub esp,0x238 0x08048493 <main+19>: mov DWORD PTR [ebp-0xc],ebx 0x08048496 <main+22>: xor ebx,ebx 0x08048498 <main+24>: mov DWORD PTR [ebp-0x10],ecx 0x0804849b <main+27>: mov DWORD PTR [ebp-0x8],esi 0x0804849e <main+30>: mov DWORD PTR [ebp-0x4],edi 0x080484a1 <main+33>: lea edi,[ebp-0x1c] 0x080484a4 <main+36>: mov BYTE PTR [ebp-0x14],0xb0 0x080484a8 <main+40>: mov BYTE PTR [ebp-0x13],0x1 0x080484ac <main+44>: mov BYTE PTR [ebp-0x12],0xd1 0x080484b0 <main+48>: mov BYTE PTR [ebp-0x11],0x1 0x080484b4 <main+52>: mov DWORD PTR [esp+0x4],ebx 0x080484b8 <main+56>: lea ebx,[ebp-0x21c] 0x080484be <main+62>: mov DWORD PTR [esp],0x804867c 0x080484c5 <main+69>: call 0x804836c <[EMAIL PROTECTED]> 0x080484ca <main+74>: mov DWORD PTR [ebp-0x224],eax 0x080484d0 <main+80>: mov DWORD PTR [esp+0x8],ebx 0x080484d4 <main+84>: mov DWORD PTR [esp+0x4],edi 0x080484d8 <main+88>: mov DWORD PTR [esp],0x8048685 0x080484df <main+95>: call 0x80483ac <[EMAIL PROTECTED]> 0x080484e4 <main+100>: mov ecx,0x31f 0x080484e9 <main+105>: lea eax,[ebp-0x14] 0x080484ec <main+108>: mov DWORD PTR [esp+0x4],ecx 0x080484f0 <main+112>: mov DWORD PTR [esp+0xc],ebx 0x080484f4 <main+116>: mov DWORD PTR [esp+0x8],eax 0x080484f8 <main+120>: mov eax,DWORD PTR [ebp-0x224] 0x080484fe <main+126>: mov DWORD PTR [esp],eax 0x08048501 <main+129>: call 0x804839c <[EMAIL PROTECTED]> 0x08048506 <main+134>: mov DWORD PTR [esp+0x8],ebx 0x0804850a <main+138>: mov DWORD PTR [esp+0x4],edi 0x0804850e <main+142>: mov DWORD PTR [esp],0x80486a0 0x08048515 <main+149>: mov esi,eax 0x08048517 <main+151>: call 0x80483ac <[EMAIL PROTECTED]> 0x0804851c <main+156>: mov edx,0x200 0x08048521 <main+161>: mov DWORD PTR [esp+0x4],edx 0x08048525 <main+165>: mov DWORD PTR [esp],0x80486bb 0x0804852c <main+172>: call 0x80483ac <[EMAIL PROTECTED]> 0x08048531 <main+177>: mov DWORD PTR [esp+0x4],esi 0x08048535 <main+181>: mov DWORD PTR [esp],0x80486cb 0x0804853c <main+188>: call 0x80483ac <[EMAIL PROTECTED]> 0x08048541 <main+193>: test esi,esi 0x08048543 <main+195>: je 0x8048572 <main+242> 0x08048545 <main+197>: mov eax,0x804867c 0x0804854a <main+202>: mov DWORD PTR [esp+0x4],eax 0x0804854e <main+206>: mov DWORD PTR [esp],0x80486f0 0x08048555 <main+213>: call 0x80483ac <[EMAIL PROTECTED]> 0x0804855a <main+218>: mov eax,0x1 0x0804855f <main+223>: mov ecx,DWORD PTR [ebp-0x10] 0x08048562 <main+226>: mov ebx,DWORD PTR [ebp-0xc] 0x08048565 <main+229>: mov esi,DWORD PTR [ebp-0x8] 0x08048568 <main+232>: mov edi,DWORD PTR [ebp-0x4] 0x0804856b <main+235>: mov esp,ebp 0x0804856d <main+237>: pop ebp 0x0804856e <main+238>: lea esp,[ecx-0x4] 0x08048571 <main+241>: ret 0x08048572 <main+242>: mov DWORD PTR [esp],0x80486d6 0x08048579 <main+249>: call 0x80483cc <[EMAIL PROTECTED]> 0x0804857e <main+254>: mov eax,DWORD PTR [ebp-0x21c] 0x08048584 <main+260>: mov DWORD PTR [ebp-0x1c],eax 0x08048587 <main+263>: mov eax,DWORD PTR [ebp-0x218] 0x0804858d <main+269>: mov DWORD PTR [ebp-0x18],eax 0x08048590 <main+272>: mov eax,DWORD PTR [ebp-0x224] 0x08048596 <main+278>: mov DWORD PTR [esp],eax 0x08048599 <main+281>: call 0x80483bc <[EMAIL PROTECTED]> 0x0804859e <main+286>: xor eax,eax 0x080485a0 <main+288>: jmp 0x804855f <main+223> End of assembler dump. (gdb) bt #0 0x08048571 in main () at test2.c:39 (gdb) info registers eax 0x0 0 ecx 0x33010010 855703568 edx 0xbffa8f1c -1074098404 ebx 0x0 0 esp 0x3301000c 0x3301000c ebp 0x0 0x0 esi 0x0 0 edi 0x19030000 419627008 eip 0x8048571 0x8048571 <main+241> eflags 0x210246 [ PF ZF IF RF ID ] cs 0x73 115 ss 0x7b 123 ds 0x7b 123 es 0x7b 123 fs 0x0 0 gs 0x33 51 (gdb) -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34716
