On systems with recent enough glibc, reallocarray compat won't kick in, so
reallocarray() itself has to come from stdlib.h include. But _GNU_SOURCE is
necessary to enable it. So add it.
Fixes: 4cff2ba58bf1 ("libbpf: Add BPF ring buffer support")
Signed-off-by: Andrii Nakryiko <[email protected]>
---
tools/lib/bpf/ringbuf.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/tools/lib/bpf/ringbuf.c b/tools/lib/bpf/ringbuf.c
index bc10fa1d43c7..4fc6c6cbb4eb 100644
--- a/tools/lib/bpf/ringbuf.c
+++ b/tools/lib/bpf/ringbuf.c
@@ -4,6 +4,9 @@
*
* Copyright (C) 2020 Facebook, Inc.
*/
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
--
2.24.1
