128 lines
4.0 KiB
Diff
128 lines
4.0 KiB
Diff
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commit 0b962177ee3b45cf775176eb454fcf6aa1b0f6e3
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Author: Andreas Schwab <schwab@suse.de>
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Date: Thu Jan 26 14:25:05 2023 +0100
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Use 64-bit time_t interfaces in strftime and strptime (bug 30053)
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Both functions use time_t only internally, so the ABI is not affected.
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(cherry picked from commit 41349f6f67c83e7bafe49f985b56493d2c4c9c77)
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diff --git a/time/Makefile b/time/Makefile
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index 38e3a7f4c77ea27f..ef3bb767b825f76a 100644
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--- a/time/Makefile
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+++ b/time/Makefile
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@@ -50,7 +50,7 @@ tests := test_time clocktest tst-posixtz tst-strptime tst_wcsftime \
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tst-clock tst-clock2 tst-clock_nanosleep tst-cpuclock1 \
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tst-adjtime tst-ctime tst-difftime tst-mktime4 tst-clock_settime \
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tst-settimeofday tst-itimer tst-gmtime tst-timegm \
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- tst-timespec_get tst-timespec_getres
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+ tst-timespec_get tst-timespec_getres tst-strftime4
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tests-time64 := \
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tst-adjtime-time64 \
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@@ -65,6 +65,7 @@ tests-time64 := \
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tst-itimer-time64 \
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tst-mktime4-time64 \
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tst-settimeofday-time64 \
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+ tst-strftime4-time64 \
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tst-timegm-time64 \
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tst-timespec_get-time64 \
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tst-timespec_getres-time64 \
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diff --git a/time/strftime_l.c b/time/strftime_l.c
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index d8cde9c5a3af87c7..57abbaa571694505 100644
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--- a/time/strftime_l.c
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+++ b/time/strftime_l.c
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@@ -159,6 +159,10 @@ extern char *tzname[];
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#ifdef _LIBC
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# define tzname __tzname
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# define tzset __tzset
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+
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+# define time_t __time64_t
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+# define __gmtime_r(t, tp) __gmtime64_r (t, tp)
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+# define mktime(tp) __mktime64 (tp)
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#endif
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#if !HAVE_TM_GMTOFF
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diff --git a/time/strptime_l.c b/time/strptime_l.c
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index 02c5d63c798f9c13..39d1e59b0871f4b4 100644
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--- a/time/strptime_l.c
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+++ b/time/strptime_l.c
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@@ -30,8 +30,10 @@
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#ifdef _LIBC
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# define HAVE_LOCALTIME_R 0
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# include "../locale/localeinfo.h"
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-#endif
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+# define time_t __time64_t
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+# define __localtime_r(t, tp) __localtime64_r (t, tp)
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+#endif
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#if ! HAVE_LOCALTIME_R && ! defined localtime_r
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# ifdef _LIBC
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diff --git a/time/tst-strftime4-time64.c b/time/tst-strftime4-time64.c
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new file mode 100644
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index 0000000000000000..4d47ee7d79f9e648
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--- /dev/null
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+++ b/time/tst-strftime4-time64.c
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@@ -0,0 +1 @@
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+#include "tst-strftime4.c"
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diff --git a/time/tst-strftime4.c b/time/tst-strftime4.c
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new file mode 100644
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index 0000000000000000..659716d0fa4534ae
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--- /dev/null
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+++ b/time/tst-strftime4.c
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@@ -0,0 +1,52 @@
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+/* Test strftime and strptime after 2038-01-19 03:14:07 UTC (bug 30053).
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+ Copyright (C) 2023 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, see
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+ <https://www.gnu.org/licenses/>. */
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+
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+#include <time.h>
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+#include <stdlib.h>
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+#include <stdio.h>
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+#include <string.h>
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+#include <support/check.h>
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+
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+static int
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+do_test (void)
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+{
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+ TEST_VERIFY_EXIT (setenv ("TZ", "UTC0", 1) == 0);
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+ tzset ();
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+ if (sizeof (time_t) > 4)
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+ {
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+ time_t wrap = (time_t) 2147483648LL;
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+ char buf[80];
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+ struct tm *tm = gmtime (&wrap);
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+ TEST_VERIFY_EXIT (tm != NULL);
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+ TEST_VERIFY_EXIT (strftime (buf, sizeof buf, "%s", tm) > 0);
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+ puts (buf);
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+ TEST_VERIFY (strcmp (buf, "2147483648") == 0);
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+
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+ struct tm tm2;
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+ char *p = strptime (buf, "%s", &tm2);
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+ TEST_VERIFY_EXIT (p != NULL && *p == '\0');
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+ time_t t = mktime (&tm2);
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+ printf ("%lld\n", (long long) t);
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+ TEST_VERIFY (t == wrap);
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+ }
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+ else
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+ FAIL_UNSUPPORTED ("32-bit time_t");
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+ return 0;
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+}
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+
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+#include <support/test-driver.c>
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