fix deadlock race in pthread_once

[musl] / src / misc / getgrouplist.c

diff --git a/src/misc/getgrouplist.c b/src/misc/getgrouplist.c
index 63557af..c9a8f09 100644 (file)
--- a/src/misc/getgrouplist.c
+++ b/src/misc/getgrouplist.c
@@ -1,3 +1,4 @@
+#define _GNU_SOURCE
 #include <grp.h>
 #include <string.h>
 #include <limits.h>