!200 fix overflow ittimer tests on 32 bit system

From: @liqingqing_1229
Reviewed-by: @wswsamao
Signed-off-by: @wswsamao

glibc.spec

@@ -63,7 +63,7 @@
 ##############################################################################
 Name: 	 	glibc
 Version: 	2.34
-Release: 	7
+Release: 	8
 Summary: 	The GNU libc libraries
 License:	%{all_license}
 URL: 		http://www.gnu.org/software/glibc/
@@ -98,6 +98,7 @@ Patch17: 5-5-AArch64-Improve-A64FX-memset-medium-loops.patch
 Patch18: elf-Unconditionally-use-__ehdr_start.patch
 Patch19: aarch64-Make-elf_machine_-load_address-dynamic-robus.patch
 Patch20: mtrace-Use-a-static-buffer-for-printing-BZ-25947.patch
+Patch21: time-Fix-overflow-itimer-tests-on-32-bit-systems.patch
 
 #Patch9000: turn-REP_STOSB_THRESHOLD-from-2k-to-1M.patch
 Patch9001: delete-no-hard-link-to-avoid-all_language-package-to.patch 
@@ -1189,6 +1190,9 @@ fi
 %doc hesiod/README.hesiod
 
 %changelog
+* Wed Sep 29 2021 Qingqing Li<liqingqing3@huawei.com> - 2.34-8
+- fix overflow ittimer tests on 32 bit system
+
 * Mon Sep 27 2021 Qingqing Li<liqingqing3@huawei.com> - 2.34-7
 - mtrace: use a static buffer for printing, fix memory leak.
   upstream link: https://sourceware.org/bugzilla/show_bug.cgi?id=25947

time-Fix-overflow-itimer-tests-on-32-bit-systems.patch

@@ -0,0 +1,90 @@
+From 6e8a0aac2f883a23efb1683b120499138f9e6021 Mon Sep 17 00:00:00 2001
+From: Stafford Horne <shorne@gmail.com>
+Date: Mon, 7 Jun 2021 22:10:19 +0900
+Subject: [PATCH] time: Fix overflow itimer tests on 32-bit systems
+
+On the port of OpenRISC I am working on and it appears the rv32 port
+we have sets __TIMESIZE == 64 && __WORDSIZE == 32.  This causes the
+size of time_t to be 8 bytes, but the tv_sec in the kernel is still 32-bit
+causing truncation.
+
+The truncations are unavoidable on these systems so skip the
+testing/failures by guarding with __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64.
+
+Also, futher in the tests and in other parts of code checking for time_t
+overflow does not work on 32-bit systems when time_t is 64-bit.  As
+suggested by Adhemerval, update the in_time_t_range function to assume
+32-bits by using int32_t.
+
+This also brings in the header for stdint.h so we can update other
+usages of __int32_t to int32_t as suggested by Adhemerval.
+
+Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
+---
+ include/time.h    | 10 ++++++----
+ time/tst-itimer.c |  4 ++--
+ 2 files changed, 8 insertions(+), 6 deletions(-)
+
+diff --git a/include/time.h b/include/time.h
+index 22b29ca..127347e 100644
+--- a/include/time.h
++++ b/include/time.h
+@@ -11,6 +11,7 @@
+ # include <sys/time.h>
+ # include <time-clockid.h>
+ # include <sys/time.h>
++# include <stdint.h>
+ 
+ extern __typeof (strftime_l) __strftime_l;
+ libc_hidden_proto (__strftime_l)
+@@ -342,11 +343,12 @@ libc_hidden_proto (__time64)
+    actual clock ID.  */
+ #define CLOCK_IDFIELD_SIZE	3
+ 
+-/* Check whether T fits in time_t.  */
++/* Check whether T fits in int32_t, assume all usages are for
++   sizeof(time_t) == 32.  */
+ static inline bool
+ in_time_t_range (__time64_t t)
+ {
+-  time_t s = t;
++  int32_t s = t;
+   return s == t;
+ }
+ 
+@@ -453,8 +455,8 @@ timespec64_to_timeval64 (const struct __timespec64 ts64)
+    and suseconds_t.  */
+ struct __timeval32
+ {
+-  __int32_t tv_sec;         /* Seconds.  */
+-  __int32_t tv_usec;        /* Microseconds.  */
++  int32_t tv_sec;         /* Seconds.  */
++  int32_t tv_usec;        /* Microseconds.  */
+ };
+ 
+ /* Conversion functions for converting to/from __timeval32  */
+diff --git a/time/tst-itimer.c b/time/tst-itimer.c
+index 929c2b7..bd7d7af 100644
+--- a/time/tst-itimer.c
++++ b/time/tst-itimer.c
+@@ -100,7 +100,7 @@ do_test (void)
+ 
+       /* Linux does not provide 64 bit time_t support for getitimer and
+ 	 setitimer on architectures with 32 bit time_t support.  */
+-      if (sizeof (__time_t) == 8)
++      if (__KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64)
+ 	{
+ 	  TEST_COMPARE (setitimer (timers[i], &it, NULL), 0);
+ 	  TEST_COMPARE (setitimer (timers[i], &(struct itimerval) { 0 },
+@@ -131,7 +131,7 @@ do_test (void)
+       it.it_interval.tv_usec = 20;
+       it.it_value.tv_sec = 30;
+       it.it_value.tv_usec = 40;
+-      if (sizeof (__time_t) == 8)
++      if (__KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64)
+ 	{
+ 	  TEST_COMPARE (setitimer (timers[i], &it, NULL), 0);
+ 
+-- 
+1.8.3.1
+