> -----Original Message----- > From: gcc-help-owner@xxxxxxxxxxx [mailto:gcc-help-owner@xxxxxxxxxxx] On > Behalf Of Andrew Haley > Sent: Dienstag, 3. Januar 2012 16:26 > To: gcc-help@xxxxxxxxxxx > Subject: Re: Questions before submitting a bug report > > On 01/03/2012 03:02 PM, Markus Henschel wrote: > > Is there some obvious flaw in my code? > > What error did you get? Not all CPUs can do __sync_add_and_fetch on a > long long. The resulting program crashes with a segmentation fault on the line with __sync_add_and_fetch. This is the complete command line I used for compiling: "gcc -fPIC -march=i586 -fvisibility=hidden -O3 mytest.c -o mytest" The error goes away if I remove "-fPIC", "-fvisibility=hidden" or if I use some less aggressive optimization. It also disappears if I use a long instead of a long long.
