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-rw-r--r--include/u.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/u.h b/include/u.h
index 69d14e3d..d0cd6396 100644
--- a/include/u.h
+++ b/include/u.h
@@ -19,6 +19,7 @@ extern "C" {
#define _BSD_SOURCE 1
#define _NETBSD_SOURCE 1 /* NetBSD */
#define _SVID_SOURCE 1
+#define _DEFAULT_SOURCE 1
#if !defined(__APPLE__) && !defined(__OpenBSD__)
# define _XOPEN_SOURCE 1000
# define _XOPEN_SOURCE_EXTENDED 1