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-rw-r--r--src/stdio/getw.c1
-rw-r--r--src/stdio/putw.c1
2 files changed, 2 insertions, 0 deletions
diff --git a/src/stdio/getw.c b/src/stdio/getw.c
index de9e985a..73d2c0d5 100644
--- a/src/stdio/getw.c
+++ b/src/stdio/getw.c
@@ -1,3 +1,4 @@
+#define _GNU_SOURCE
 #include <stdio.h>
 
 int getw(FILE *f)
diff --git a/src/stdio/putw.c b/src/stdio/putw.c
index 137832ee..a6d24292 100644
--- a/src/stdio/putw.c
+++ b/src/stdio/putw.c
@@ -1,3 +1,4 @@
+#define _GNU_SOURCE
 #include <stdio.h>
 
 int putw(int x, FILE *f)