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authorUlrich Drepper <drepper@redhat.com>2008-06-13 06:08:54 +0000
committerUlrich Drepper <drepper@redhat.com>2008-06-13 06:08:54 +0000
commit5bcc6c0f96789e52caa4ffdded7856472bb895e2 (patch)
tree0dd661d0982012366bfd3335249c178af8c77a5c /time
parentf854efd7224944b15ba3068de28c0d00550f88b7 (diff)
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* time/strftime.c: Pass reference to tzset_called around to handle recursive calls. [BZ #6612] * time/strftime.c (__strftime_internal): Call tzset() only when printing timezone-dependent values. Based on a patch by Petr Baudis <pasky@suse.cz>.
Diffstat (limited to 'time')
-rw-r--r--time/strftime_l.c43
1 files changed, 28 insertions, 15 deletions
diff --git a/time/strftime_l.c b/time/strftime_l.c
index 4a57b15..f1d3303 100644
--- a/time/strftime_l.c
+++ b/time/strftime_l.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2004, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2004, 2007, 2008 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -455,7 +455,8 @@ static CHAR_T const month_name[][10] =
#endif
static size_t __strftime_internal (CHAR_T *, size_t, const CHAR_T *,
- const struct tm *, bool ut_argument_spec_iso
+ const struct tm *, bool *
+ ut_argument_spec_iso
LOCALE_PARAM_PROTO) __THROW;
/* Write information from TP into S according to the format
@@ -481,7 +482,8 @@ my_strftime (s, maxsize, format, tp ut_argument LOCALE_PARAM)
tmcopy = *tp;
tp = &tmcopy;
#endif
- return __strftime_internal (s, maxsize, format, tp, false
+ bool tzset_called = false;
+ return __strftime_internal (s, maxsize, format, tp, &tzset_called
ut_argument LOCALE_ARG);
}
#ifdef _LIBC
@@ -495,7 +497,7 @@ __strftime_internal (s, maxsize, format, tp, tzset_called ut_argument
size_t maxsize;
const CHAR_T *format;
const struct tm *tp;
- bool tzset_called;
+ bool *tzset_called;
ut_argument_spec
LOCALE_PARAM_DECL
{
@@ -563,16 +565,6 @@ __strftime_internal (s, maxsize, format, tp, tzset_called ut_argument
if (! (zone && *zone))
zone = "GMT";
}
- else
- {
- /* POSIX.1 requires that local time zone information is used as
- though strftime called tzset. */
-# if HAVE_TZSET
- if (!tzset_called)
- tzset ();
- tzset_called = true;
-# endif
- }
#endif
if (hour12 > 12)
@@ -1325,7 +1317,18 @@ __strftime_internal (s, maxsize, format, tp, tzset_called ut_argument
#if HAVE_TZNAME
/* The tzset() call might have changed the value. */
if (!(zone && *zone) && tp->tm_isdst >= 0)
- zone = tzname[tp->tm_isdst];
+ {
+ /* POSIX.1 requires that local time zone information is used as
+ though strftime called tzset. */
+# if HAVE_TZSET
+ if (!*tzset_called)
+ {
+ tzset ();
+ *tzset_called = true;
+ }
+# endif
+ zone = tzname[tp->tm_isdst];
+ }
#endif
if (! zone)
zone = "";
@@ -1361,6 +1364,16 @@ __strftime_internal (s, maxsize, format, tp, tzset_called ut_argument
struct tm ltm;
time_t lt;
+ /* POSIX.1 requires that local time zone information is used as
+ though strftime called tzset. */
+# if HAVE_TZSET
+ if (!*tzset_called)
+ {
+ tzset ();
+ *tzset_called = true;
+ }
+# endif
+
ltm = *tp;
lt = mktime (&ltm);