Date: Thu, 02 Aug 2007 22:02:11 -0700 From: Garrett Cooper <youshi10@u.washington.edu> To: Yuri Pankov <yuri@darklight.org.ru> Cc: freebsd-current@freebsd.org, Nick Frampton <njf@statseeker.com> Subject: Re: gcc 4.2 profiling breaks argv Message-ID: <46B2B6D3.3080509@u.washington.edu> In-Reply-To: <20070803045036.GA1809@darklight.org.ru> References: <46B2A6B0.1030609@statseeker.com> <20070803045036.GA1809@darklight.org.ru>
next in thread | previous in thread | raw e-mail | index | archive | help
Yuri Pankov wrote: > On Fri, Aug 03, 2007 at 01:53:20PM +1000, Nick Frampton wrote: > >> Hi all, >> >> Programs segfault when attempting to access argv from main when compiled >> under gcc 4.2.0 with the -pg profiling option. The following program >> illustrates this problem. >> >> $ cat test.c >> #include <stdio.h> >> int main (int argc, char **argv) { >> fprintf (stderr, "argv=%p\n", argv); >> return 0; >> } >> $ cc -c -o test.o -pg test.c && cc -o test -pg test.o >> $ ./test >> Segmentation fault (core dumped) >> >> $ cc -v >> Using built-in specs. >> Target: i386-undermydesk-freebsd >> Configured with: FreeBSD/i386 system compiler >> Thread model: posix >> gcc version 4.2.0 20070514 [FreeBSD] >> >> $ uname -a >> FreeBSD test03.statseeker.com 7.0-CURRENT FreeBSD 7.0-CURRENT #1: Fri Aug >> 3 11:07:03 EST 2007 >> root@test03.statseeker.com:/usr/obj/usr/src/sys/GENERIC i386 >> >> This issue was reported on this list on 5th July 2007 by Garrett Cooper but >> argv was not mentioned in that post. I have not seen this problem reported >> elsewhere (e.g. on the gcc mailing list). >> >> -Nick >> ** >> > > FWIW, I can't reproduce it on amd64: > > >> cc -c -o test.o -pg test.c && cc -o test -pg test.o >> ./test >> > argv=0x7fffffffe8b0 > >> cc -v >> > Using built-in specs. > Target: amd64-undermydesk-freebsd > Configured with: FreeBSD/amd64 system compiler > Thread model: posix > gcc version 4.2.0 20070514 [FreeBSD] > > > Yuri > I've already posted 2 other threads, and I believe a bug report about this. -Garrett
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?46B2B6D3.3080509>