include cleanups: remove unused headers and add feature test macros

[musl] / src / stdio / fgetln.c

diff --git a/src/stdio/fgetln.c b/src/stdio/fgetln.c
index a2e4bd3..afe12b5 100644 (file)
--- a/src/stdio/fgetln.c
+++ b/src/stdio/fgetln.c
@@ -1,3 +1,4 @@
+#define _GNU_SOURCE
 #include "stdio_impl.h"
 #include <string.h>