[LTP] [PATCH] quotactl07: add _GNU_SOURCE define

[Li Wang <liwang@redhat.com>]

To get rid of error on implicit declaration (glibc-2.39):

 /usr/include/xfs/linux.h:188:15: error: implicit declaration of function
 ‘fallocate’; did you mean ‘alloca’? [-Wimplicit-function-declaration]
 188 |         ret = fallocate(fd, FALLOC_FL_ZERO_RANGE, start, len);
     |               ^~~~~~~~~
     |               alloca
 make: *** [../../../../include/mk/rules.mk:45: quotactl07]
 Error 1

Signed-off-by: Li Wang <liwang@redhat.com>
---
 testcases/kernel/syscalls/quotactl/quotactl07.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/testcases/kernel/syscalls/quotactl/quotactl07.c b/testcases/kernel/syscalls/quotactl/quotactl07.c
index 34ff2705d..d8ad3760a 100644
--- a/testcases/kernel/syscalls/quotactl/quotactl07.c
+++ b/testcases/kernel/syscalls/quotactl/quotactl07.c
@@ -13,6 +13,8 @@
  * ("xfs: Sanity check flags of Q_XQUOTARM call").
  */
 
+#define _GNU_SOURCE
+#include <fcntl.h>
 #include <errno.h>
 #include <unistd.h>
 #include <stdio.h>
-- 
2.45.2


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