[Bug target/61949] [6 regression] SEGV compiling gcc.dg/pch/import-[12].c

rguenther at suse dot de gcc-bugzilla@gcc.gnu.org
Thu Feb 25 13:21:00 GMT 2016


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61949

--- Comment #16 from rguenther at suse dot de <rguenther at suse dot de> ---
On Thu, 25 Feb 2016, ro at CeBiTec dot Uni-Bielefeld.DE wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61949
> 
> --- Comment #15 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> They do, and for the same reason:
> 
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 1 (LWP 1)]
> 0x08f5ecc1 in md5_read_ctx (resbuf=0x8046fd8, ctx=0x8046e90)
>     at /var/gcc/reghunt/trunk/libiberty/md5.c:91
> 91        memcpy (resbuf, buffer, 16);
> 1: x/i $pc
> => 0x8f5ecc1 <md5_finish_ctx+161>:      movaps -0x28(%ebp),%xmm0
> (gdb) p/x $ebp
> $1 = 0x8046e74

So this is with bootstrap-O3?

On x86_64-linux I get

0000000000000040 <md5_read_ctx>:
  40:   f3 0f 6f 07             movdqu (%rdi),%xmm0
  44:   48 89 f0                mov    %rsi,%rax
  47:   0f 11 06                movups %xmm0,(%rsi)
  4a:   c3                      retq   
  4b:   0f 1f 44 00 00          nopl   0x0(%rax,%rax,1)

for it (with -O3, that is).  Can you please tell me how to configure
a cross (from x86_64-linux) and attach preprocessed source of md5.c?


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