[LTP] [PATCH] posix/conformance/interfaces/sem_timedwait/2-1: add _GNU_SOURCE define

[Ma Xinjian]

To get rid of error "‘MAP_ANONYMOUS’ undeclared (first use in this function)"
on some systems (Fedora 37, etc).

Signed-off-by: Ma Xinjian <maxj.fnst@fujitsu.com>
---
 .../conformance/interfaces/sem_timedwait/2-1.c                   | 1 +
 1 file changed, 1 insertion(+)

diff --git a/testcases/open_posix_testsuite/conformance/interfaces/sem_timedwait/2-1.c b/testcases/open_posix_testsuite/conformance/interfaces/sem_timedwait/2-1.c
index 2eca8dff6..4ccef7261 100644
--- a/testcases/open_posix_testsuite/conformance/interfaces/sem_timedwait/2-1.c
+++ b/testcases/open_posix_testsuite/conformance/interfaces/sem_timedwait/2-1.c
@@ -11,6 +11,7 @@
  */
 
 
+#define _GNU_SOURCE
 #include <stdio.h>
 #include <errno.h>
 #include <unistd.h>
-- 
2.42.0