Date: Fri, 03 Aug 2007 13:53:20 +1000 From: Nick Frampton <njf@statseeker.com> To: freebsd-current@freebsd.org Subject: gcc 4.2 profiling breaks argv Message-ID: <46B2A6B0.1030609@statseeker.com>
next in thread | raw e-mail | index | archive | help
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 **
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?46B2A6B0.1030609>