* [PATCH] selftests/futex: print tv_sec as long long
@ 2026-11-03 15:54 Sasha Levin
0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2026-11-03 15:54 UTC (permalink / raw)
To: Thomas Gleixner, Ingo Molnar
Cc: Peter Zijlstra, Darren Hart, Davidlohr Bueso, André Almeida,
Shuah Khan, linux-kernel, linux-kselftest
On 32-bit architectures with a 64-bit time_t, such as armhf in Debian
13, tv_sec is a long long, and printing it with %ld warns:
futex_requeue_pi.c:351:30: warning: format specifies type 'long' but the argument has type '__time64_t' (aka 'long long') [-Wformat]
Cast it to long long and print it with %lld.
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
Found with a 32-bit build of the selftests with a 64-bit time_t (gcc 16
and clang 21 with -m32 -D_TIME_BITS=64 -D_FILE_OFFSET_BITS=64);
KernelCI's 32-bit arm builds show the same warnings. The changed files
build without format warnings there now, and the x86_64 builds don't
change. The other selftests get the same kind of fix in separate
patches.
tools/testing/selftests/futex/functional/futex_requeue_pi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/futex/functional/futex_requeue_pi.c b/tools/testing/selftests/futex/functional/futex_requeue_pi.c
index 65326cbef3a44..2530e6999f933 100644
--- a/tools/testing/selftests/futex/functional/futex_requeue_pi.c
+++ b/tools/testing/selftests/futex/functional/futex_requeue_pi.c
@@ -348,7 +348,7 @@ TEST_F(args, futex_requeue_pi)
secs = (ts.tv_nsec + timeout_ns) / 1000000000;
ts.tv_nsec = ((int64_t)ts.tv_nsec + timeout_ns) % 1000000000;
ts.tv_sec += secs;
- TH_LOG("ts.tv_sec = %ld", ts.tv_sec);
+ TH_LOG("ts.tv_sec = %lld", (long long)ts.tv_sec);
TH_LOG("ts.tv_nsec = %ld", ts.tv_nsec);
tsp = &ts;
}
--
2.53.0
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2026-11-03 15:54 [PATCH] selftests/futex: print tv_sec as long long Sasha Levin
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