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-rw-r--r--ext/thread/thread.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/ext/thread/thread.c b/ext/thread/thread.c
index 910b326..43dfc34 100644
--- a/ext/thread/thread.c
+++ b/ext/thread/thread.c
@@ -14,6 +14,8 @@
#include <rubysig.h>
#include <node.h>
+enum rb_thread_status rb_thread_status _((VALUE));
+
static VALUE rb_cMutex;
static VALUE rb_cConditionVariable;
static VALUE rb_cQueue;