1 files changed, 1 insertions, 0 deletions
diff --git a/thread.c b/thread.c
index 45f0fa7355..48115d8ddc 100644
--- a/thread.c
+++ b/thread.c
@@ -3694,6 +3694,7 @@ rb_wait_for_single_fd(int fd, int events, struct timeval *tv)
 
 	RUBY_VM_CHECK_INTS_BLOCKING(th);
     } while (result < 0 && retryable(errno = lerrno) && poll_update());
+    if (result < 0) return -1;
 
     if (fds.revents & POLLNVAL) {
 	errno = EBADF;