Author: dim
Date: Wed Mar 27 07:58:29 2013
New Revision: 248787
URL: http://svnweb.freebsd.org/changeset/base/248787
Log:
MFC r248672:
Compile contrib/tzcode/stdtime/localtime.c with -fwrapv, since it relies
on signed integer overflow wrapping. Otherwise mktime(3) and timegm(3)
can hang, in case the timestamp passed in struct tm is not representable
in a time_t. Specifically, any timestamp after 2038-01-19 03:14:07, in
combination with a 32-bit time_t.
Note that it would be better to change the code to not rely on undefined
behaviour, but it is contributed code, and it is not entirely trivial to
fix the issue properly.
Modified:
stable/9/lib/libc/stdtime/Makefile.inc
Directory Properties:
stable/9/lib/libc/ (props changed)
Modified: stable/9/lib/libc/stdtime/Makefile.inc
==============================================================================
--- stable/9/lib/libc/stdtime/Makefile.inc Wed Mar 27 07:30:08 2013
(r248786)
+++ stable/9/lib/libc/stdtime/Makefile.inc Wed Mar 27 07:58:29 2013
(r248787)
@@ -11,6 +11,9 @@ SYM_MAPS+= ${.CURDIR}/stdtime/Symbol.map
CFLAGS+= -I${.CURDIR}/../../contrib/tzcode/stdtime -I${.CURDIR}/stdtime
+CFLAGS.localtime.c= -fwrapv
+CFLAGS+= ${CFLAGS.${.IMPSRC:T}}
+
MAN+= ctime.3 strftime.3 strptime.3 time2posix.3
MAN+= tzfile.5
_______________________________________________
[email protected] mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-stable-9
To unsubscribe, send any mail to "[email protected]"
