https://sourceware.org/bugzilla/show_bug.cgi?id=19660
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> --- (In reply to njholcomb from comment #2) > Created attachment 9201 [details] > Shows rep prefixes on non-string instructions I got 0000000000000000 <main>: 0: 55 push %rbp 1: 48 89 e5 mov %rsp,%rbp 4: f3 e0 58 repz loopne 5f <main+0x5f> 7: f2 00 00 repnz add %al,(%rax) a: 00 b8 00 00 00 00 add %bh,0x0(%rax) 10: 5d pop %rbp 11: c3 retq repz is nop before loopne. repnz is UD before add: Program received signal SIGSEGV, Segmentation fault. 0x000000000040048f in main () (gdb) disass Dump of assembler code for function main: 0x0000000000400488 <+0>: push %rbp 0x0000000000400489 <+1>: mov %rsp,%rbp 0x000000000040048c <+4>: repz loopne 0x4004e7 <__libc_csu_init+71> => 0x000000000040048f <+7>: repnz add %al,(%rax) 0x0000000000400492 <+10>: add %bh,0x0(%rax) 0x0000000000400498 <+16>: pop %rbp 0x0000000000400499 <+17>: retq End of assembler dump. (gdb) Disassembler output looks OK to me. -- You are receiving this mail because: You are on the CC list for the bug. _______________________________________________ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
