Date: 06 Apr 1998 14:18:21 -0400 From: Andrew Hobson <ahobson@eng.mindspring.net> To: freebsd-hackers@FreeBSD.ORG Subject: Optimization bug with gcc 2.7.2 + mktemp Message-ID: <kjd8eu24r6.fsf@computer.eng.mindspring.net>
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I'm running -current supped at the beginning of March. I been having core dumps when using programs that called mktemp(3) repeatedly. I finally traced it down to the fact that when I compile libc with -fomit-frame-pointer, mktemp.c is compiled incorrectly. Specifially, when _gettemp is called, the third argument (domkdir) is garbage. This is "impossible" because _mktemp calls it thusly: return(_gettemp(path, (int *)NULL, 0) ? path : (char *)NULL); I realize it's my own damn fault for compiling with optimization out the wazoo, but I was wondering if anyone else has had this same problem. I haven't seen any warnings about this, so I thought I'd pass it along. From browsing the mailing list archives, it seems that patches have been submitted in the past to make FreeBSD "-fomit-frame-pointer safe". Specifically, lib/csu/i386/Makefile explicitly adds -fno-omit-frame-pointer to CFLAGS. I don't know if that's the right answer this time or not. Drew To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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