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| author | Michael Ellerman <mpe@ellerman.id.au> | 2022-08-01 18:48:34 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-08-01 22:21:18 +1000 |
| commit | ff446cd76854d47f451a84c26bb70934ae2ec5a7 (patch) | |
| tree | 1249e564c78366f78a1483a5d38836837d656404 | |
| parent | df5d4b616ee76abc97e5bd348e22659c2b095b1c (diff) | |
| download | linux-ff446cd76854d47f451a84c26bb70934ae2ec5a7.tar.bz2 | |
selftests/powerpc: Avoid GCC 12 uninitialised variable warning
GCC 12 thinks that `actual` might be used uninitialised. It's not, the
use is guarded by `bad_mmcr2` which is only set to true at the same
point where `actual` is initialised.
cycles_with_mmcr2_test.c: In function ‘cycles_with_mmcr2’:
cycles_with_mmcr2_test.c:81:17: error: ‘actual’ may be used uninitialized [-Werror=maybe-uninitialized]
81 | printf("Bad MMCR2 value seen is 0x%lx\n", actual);
Silence the warning by initialising `actual` to zero.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220801113746.802046-1-mpe@ellerman.id.au
| -rw-r--r-- | tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c index 4b45a2e70f62..fc32187d483d 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c @@ -50,6 +50,7 @@ int cycles_with_mmcr2(void) expected[1] = MMCR2_EXPECTED_2; i = 0; bad_mmcr2 = false; + actual = 0; /* Make sure we loop until we take at least one EBB */ while ((ebb_state.stats.ebb_count < 20 && !bad_mmcr2) || |