_GNU_SOURCE is provided by lib.mk, so it should be dropped to prevent redefinition warnings. Reviewed-by: John Hubbard <jhubbard@xxxxxxxxxx> Reviewed-by: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx> Signed-off-by: Edward Liaw <edliaw@xxxxxxxxxx> --- tools/testing/selftests/core/close_range_test.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/tools/testing/selftests/core/close_range_test.c b/tools/testing/selftests/core/close_range_test.c index 991c473e3859..05781c7fc578 100644 --- a/tools/testing/selftests/core/close_range_test.c +++ b/tools/testing/selftests/core/close_range_test.c @@ -1,6 +1,4 @@ // SPDX-License-Identifier: GPL-2.0 - -#define _GNU_SOURCE #include <errno.h> #include <fcntl.h> #include <linux/kernel.h> -- 2.45.1.288.g0e0cd299f1-goog