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-rw-r--r--src/thread/pthread_join.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/thread/pthread_join.c b/src/thread/pthread_join.c
index b8813e02..17dae85d 100644
--- a/src/thread/pthread_join.c
+++ b/src/thread/pthread_join.c
@@ -1,3 +1,4 @@
+#define _GNU_SOURCE
 #include "pthread_impl.h"
 #include <sys/mman.h>