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-rw-r--r--src/passwd/putgrent.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/passwd/putgrent.c b/src/passwd/putgrent.c
index 6f26c051..a0b320fc 100644
--- a/src/passwd/putgrent.c
+++ b/src/passwd/putgrent.c
@@ -1,3 +1,4 @@
+#define _GNU_SOURCE
 #include <grp.h>
 #include <stdio.h>