linux-kernel - [PATCH] selftests: mqueue|vDSO: fix convert pointer warnings

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Date:   Fri,  5 Nov 2021 17:29:40 +0100
From:   Anders Roxell <anders.roxell@...aro.org>
To:     shuah@...nel.org
Cc:     linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        Anders Roxell <anders.roxell@...aro.org>
Subject: [PATCH] selftests: mqueue|vDSO: fix convert pointer warnings

When building selftests, mqueue and vDSO the following shows up:

warning: passing 'int *' to parameter of type 'unsigned int *' converts between pointers to integer types with different sign [-Wpointer-sign]

warning: passing 'const char *' to parameter of type 'const unsigned char *' converts between pointers to integer types where one is of the unique plain 'char' type and the other is not [-Wpointer-sign]

The code looked OK so what normally are done are, adding the compiler
directive to hide the warnings '-Wno-pointer-sign'.

Signed-off-by: Anders Roxell <anders.roxell@...aro.org>
---
 tools/testing/selftests/mqueue/Makefile | 2 +-
 tools/testing/selftests/vDSO/Makefile   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/mqueue/Makefile b/tools/testing/selftests/mqueue/Makefile
index 8a58055fc1f5..814907b6344f 100644
--- a/tools/testing/selftests/mqueue/Makefile
+++ b/tools/testing/selftests/mqueue/Makefile
@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
-CFLAGS += -O2
+CFLAGS += -O2 -Wno-pointer-sign
 LDLIBS = -lrt -lpthread -lpopt
 
 TEST_GEN_PROGS := mq_open_tests mq_perf_tests
diff --git a/tools/testing/selftests/vDSO/Makefile b/tools/testing/selftests/vDSO/Makefile
index d53a4d8008f9..2a60233ba2fb 100644
--- a/tools/testing/selftests/vDSO/Makefile
+++ b/tools/testing/selftests/vDSO/Makefile
@@ -12,7 +12,7 @@ TEST_GEN_PROGS += $(OUTPUT)/vdso_standalone_test_x86
 endif
 TEST_GEN_PROGS += $(OUTPUT)/vdso_test_correctness
 
-CFLAGS := -std=gnu99
+CFLAGS := -std=gnu99 -Wno-pointer-sign
 CFLAGS_vdso_standalone_test_x86 := -nostdlib -fno-asynchronous-unwind-tables -fno-stack-protector
 LDFLAGS_vdso_test_correctness := -ldl
 ifeq ($(CONFIG_X86_32),y)
-- 
2.33.0