File _service:tar_scm:backport-clang-0049-support-Su... of Package glibc

File _service:tar_scm:backport-clang-0049-support-Suppress-clang-warning-on-tst-timespec.patch of Package glibc

From aa3b5bf27485bc3a41d90604ae1d439238d0d85a Mon Sep 17 00:00:00 2001
From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Fri, 25 Mar 2022 11:26:46 -0300
Subject: [PATCH] support: Suppress clang warning on tst-timespec

clang warns that converting from TIME_T_MAX to double (upper_bound)
loses precision (from 9223372036854775807 to 9223372036854775808):

tst-timespec.c:290:19: error: implicit conversion from 'time_t' (aka
  'long') to 'double' changes value from 9223372036854775807 to
  9223372036854775808 [-Werror,-Wimplicit-const-int-float-conversion]
     .upper_bound = TIME_T_MAX, .lower_bound = 1, .result = 1,
                    ^~~~~~~~~~
  tst-timespec.c:48:20: note: expanded from macro 'TIME_T_MAX'
  #define TIME_T_MAX TYPE_MAXIMUM (time_t)
                     ^~~~~~~~~~~~~~~~~~~~~
  ../include/intprops.h:57:4: note: expanded from macro 'TYPE_MAXIMUM'
    ((t) (! TYPE_SIGNED (t)
  \
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

It does not matter for the test.

Checked on x86_64-linux-gnu.
---
 support/tst-timespec.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/support/tst-timespec.c b/support/tst-timespec.c
index 08c2c71ef5..a6d7864f81 100644
--- a/support/tst-timespec.c
+++ b/support/tst-timespec.c
@@ -20,6 +20,7 @@
 #include <support/check.h>
 #include <limits.h>
 #include <intprops.h>
+#include <libc-diag.h>
 
 #define TIMESPEC_HZ 1000000000
 
@@ -179,6 +180,11 @@ struct timespec_norm_test_case norm_cases[] = {
   }
 };
 
+/* clang warns that converting from TIME_T_MAX to double (upper_bound)
+   loses precision (from 9223372036854775807 to 9223372036854775808).
+   It does not matter in tests below.  */
+DIAG_PUSH_NEEDS_COMMENT_CLANG;
+DIAG_IGNORE_NEEDS_COMMENT_CLANG (13, "-Wimplicit-const-int-float-conversion");
 /* Test cases for timespec_check_in_range  */
 struct timespec_test_case check_cases[] = {
   /* 0 - In range  */
@@ -290,6 +296,7 @@ struct timespec_test_case check_cases[] = {
    .upper_bound = TIME_T_MAX, .lower_bound = 1, .result = 1,
   },
 };
+DIAG_POP_NEEDS_COMMENT_CLANG;
 
 static int
 do_test (void)
-- 
2.39.3