linux-kernel - [PATCH] selftests: vDSO: parse: warning: fix assignment as a condition

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Date:   Fri,  5 Nov 2021 17:27:56 +0100
From:   Anders Roxell <anders.roxell@...aro.org>
To:     shuah@...nel.org
Cc:     nathan@...nel.org, ndesaulniers@...gle.com,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        llvm@...ts.linux.dev, Anders Roxell <anders.roxell@...aro.org>
Subject: [PATCH] selftests: vDSO: parse: warning: fix assignment as a condition

When building selftests/vDSO with clang the following warning shows up:

clang -std=gnu99 -Wno-pointer-sign    vdso_test_gettimeofday.c parse_vdso.c  -o /home/anders/.cache/tuxmake/builds/current/kselftest/vDSO/vdso_test_gettimeofday
parse_vdso.c:65:9: warning: using the result of an assignment as a condition without parentheses [-Wparentheses]
                if (g = h & 0xf0000000)
                    ~~^~~~~~~~~~~~~~~~

Rework to a parentheses before doing the check.

Signed-off-by: Anders Roxell <anders.roxell@...aro.org>
---
 tools/testing/selftests/vDSO/parse_vdso.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/vDSO/parse_vdso.c b/tools/testing/selftests/vDSO/parse_vdso.c
index 413f75620a35..b47b721a4ea4 100644
--- a/tools/testing/selftests/vDSO/parse_vdso.c
+++ b/tools/testing/selftests/vDSO/parse_vdso.c
@@ -62,7 +62,7 @@ static unsigned long elf_hash(const unsigned char *name)
 	while (*name)
 	{
 		h = (h << 4) + *name++;
-		if (g = h & 0xf0000000)
+		if ((g = (h & 0xf0000000)))
 			h ^= g >> 24;
 		h &= ~g;
 	}
-- 
2.33.0