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author | Yonghong Song <yonghong.song@linux.dev> | 2023-07-28 08:57:40 +0300 |
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committer | Alexei Starovoitov <ast@kernel.org> | 2023-07-28 18:54:04 +0300 |
commit | 09fedc731874123e0f6e5e5e3572db0c60378c2a (patch) | |
tree | df81445bfd8e43df82cae48c9fc523d0f445e224 /tools/testing/selftests/bpf/Makefile | |
parent | f7e6bd33d1d404608515addcd84cf25ac5289314 (diff) | |
download | linux-09fedc731874123e0f6e5e5e3572db0c60378c2a.tar.xz |
bpf: Fix compilation warning with -Wparentheses
The kernel test robot reported compilation warnings when -Wparentheses is
added to KBUILD_CFLAGS with gcc compiler. The following is the error message:
.../bpf-next/kernel/bpf/verifier.c: In function ‘coerce_reg_to_size_sx’:
.../bpf-next/kernel/bpf/verifier.c:5901:14:
error: suggest parentheses around comparison in operand of ‘==’ [-Werror=parentheses]
if (s64_max >= 0 == s64_min >= 0) {
~~~~~~~~^~~~
.../bpf-next/kernel/bpf/verifier.c: In function ‘coerce_subreg_to_size_sx’:
.../bpf-next/kernel/bpf/verifier.c:5965:14:
error: suggest parentheses around comparison in operand of ‘==’ [-Werror=parentheses]
if (s32_min >= 0 == s32_max >= 0) {
~~~~~~~~^~~~
To fix the issue, add proper parentheses for the above '>=' condition
to silence the warning/error.
I tried a few clang compilers like clang16 and clang18 and they do not emit
such warnings with -Wparentheses.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202307281133.wi0c4SqG-lkp@intel.com/
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20230728055740.2284534-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/Makefile')
0 files changed, 0 insertions, 0 deletions