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-rw-r--r--thread.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/thread.c b/thread.c
index 9996d6a4aee..b83c9495edb 100644
--- a/thread.c
+++ b/thread.c
@@ -69,6 +69,7 @@ static int rb_thread_dead(rb_thread_t *th);
static void rb_check_deadlock(rb_vm_t *vm);
+int rb_signal_buff_size(void);
void rb_signal_exec(rb_thread_t *th, int sig);
void rb_disable_interrupt(void);
void rb_thread_stop_timer_thread(void);