When stdout is redirected to a file this test fails.
This happens when running through the kselftest runner since
commit d9e6269e3303 ("selftests/run_kselftest.sh: exit with
error if tests fail").
For consistency with other tests that read from a file descriptor,
switch to stdin over stdout. The tests are still brittle against
a redirected stdin, but at least they are now consistently so.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
---
tools/testing/selftests/nolibc/nolibc-test.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c
index 3986d55a6ff6..e83c1e7e2beb 100644
--- a/tools/testing/selftests/nolibc/nolibc-test.c
+++ b/tools/testing/selftests/nolibc/nolibc-test.c
@@ -1404,7 +1404,7 @@ int run_syscall(int min, int max)
CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break;
CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break;
CASE_TEST(readv_badf); EXPECT_SYSER(1, readv(-1, &iov_one, 1), -1, EBADF); break;
- CASE_TEST(readv_zero); EXPECT_SYSZR(1, readv(1, NULL, 0)); break;
+ CASE_TEST(readv_zero); EXPECT_SYSZR(1, readv(0, NULL, 0)); break;
CASE_TEST(writev_badf); EXPECT_SYSER(1, writev(-1, &iov_one, 1), -1, EBADF); break;
CASE_TEST(writev_zero); EXPECT_SYSZR(1, writev(1, NULL, 0)); break;
CASE_TEST(ptrace); EXPECT_SYSER(1, ptrace(PTRACE_CONT, getpid(), NULL, NULL), -1, ESRCH); break;
--
2.52.0