[PATCH] selftests/rlimits: print rlim_t as unsigned long long

[Sasha Levin <sashal@kernel.org>]

On 32-bit architectures with _FILE_OFFSET_BITS=64, rlim_t is an unsigned
long long, and printing it with %ld warns:

  rlimits-per-userns.c:38:49: warning: format '%ld' expects argument of type 'long int', but argument 3 has type 'rlim_t' {aka 'long long unsigned int'} [-Wformat=]

Cast it to unsigned long long and print it with %llu.

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/rlimits/rlimits-per-userns.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/rlimits/rlimits-per-userns.c b/tools/testing/selftests/rlimits/rlimits-per-userns.c
index 26dc949e93eae..11bc65aca16b0 100644
--- a/tools/testing/selftests/rlimits/rlimits-per-userns.c
+++ b/tools/testing/selftests/rlimits/rlimits-per-userns.c
@@ -35,7 +35,7 @@ static void setrlimit_nproc(rlim_t n)
 		.rlim_max = n
 	};
 
-	warnx("(pid=%d): Setting RLIMIT_NPROC=%ld", pid, n);
+	warnx("(pid=%d): Setting RLIMIT_NPROC=%llu", pid, (unsigned long long)n);
 
 	if (setrlimit(RLIMIT_NPROC, &limit) < 0)
 		err(EXIT_FAILURE, "(pid=%d): setrlimit(RLIMIT_NPROC)", pid);
-- 
2.53.0