Date: Tue, 08 Aug 2000 18:34:46 -0400 From: "Thomas M. Sommers" <tms2@mail.ptd.net> To: Alfred Perlstein <bright@wintelcom.net> Cc: Mark Ovens <marko@FreeBSD.ORG>, chat@FreeBSD.ORG Subject: Re: C time functions - problem Message-ID: <39908B06.D1238928@mail.ptd.net> References: <20000808201807.H250@parish> <20000808122832.I4854@fw.wintelcom.net>
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Alfred Perlstein wrote: > > * Mark Ovens <marko@FreeBSD.ORG> [000808 12:21] wrote: > > Can anyone tell me why the call to localtime() in the code below > > should segfault in tzset()? > > > > Running it in the debugger shows that ``t'' is set to a sensible > > value. > > > > Program received signal SIGSEGV, Segmentation fault. > > 0x280be4c8 in tzset () from /usr/lib/libc.so.4 > > > > > > #include <stdio.h> > > #include <time.h> > > > > int main() { > > struct tm *timeptr; > > char buf[BUFSIZ]; > > size_t size; > > time_t t; > > > > tzset; > > > > t = time((time_t *)0); > > timeptr = localtime((time_t *)t); > > > > ..... > > Please don't do disgusting things with casts. > > Do not cast a time_t to a time_t *, they aren't the same. > > Don't cast 0 to a pointer type, use NULL. Or just use 0. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
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