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| author | Björn Töpel <bjorn@rivosinc.com> | 2023-11-02 13:35:37 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-11-02 17:57:21 +0300 |
| commit | d84b139f53e8fa8048f16814c6b2a53d7bc15c3d (patch) | |
| tree | 7a2fe59a181f0c1ac1070327cc757bbbfbbdeb51 /tools/testing/selftests/bpf/xdp_hw_metadata.c | |
| parent | 94e88b8a3e50d3e60c3ba6a5c316729587595210 (diff) | |
| download | linux-d84b139f53e8fa8048f16814c6b2a53d7bc15c3d.tar.xz | |
selftests/bpf: Fix broken build where char is unsigned
There are architectures where char is not signed. If so, the following
error is triggered:
| xdp_hw_metadata.c:435:42: error: result of comparison of constant -1 \
| with expression of type 'char' is always true \
| [-Werror,-Wtautological-constant-out-of-range-compare]
| 435 | while ((opt = getopt(argc, argv, "mh")) != -1) {
| | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~
| 1 error generated.
Correct by changing the char to int.
Fixes: bb6a88885fde ("selftests/bpf: Add options and frags to xdp_hw_metadata")
Signed-off-by: Björn Töpel <bjorn@rivosinc.com>
Acked-by: Larysa Zaremba <larysa.zaremba@intel.com>
Tested-by: Anders Roxell <anders.roxell@linaro.org>
Link: https://lore.kernel.org/r/20231102103537.247336-1-bjorn@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/xdp_hw_metadata.c')
| -rw-r--r-- | tools/testing/selftests/bpf/xdp_hw_metadata.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/testing/selftests/bpf/xdp_hw_metadata.c b/tools/testing/selftests/bpf/xdp_hw_metadata.c index 17c0f92ff160..c3ba40d0b9de 100644 --- a/tools/testing/selftests/bpf/xdp_hw_metadata.c +++ b/tools/testing/selftests/bpf/xdp_hw_metadata.c @@ -430,7 +430,7 @@ static void print_usage(void) static void read_args(int argc, char *argv[]) { - char opt; + int opt; while ((opt = getopt(argc, argv, "mh")) != -1) { switch (opt) { |