thread.c: suppress a warning

* thread.c (do_select): initialize timespec variable to suppress a
  false positive maybe-uninitialized warning by gcc 7 and 8.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62305 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 1 deletions

diff --git a/thread.c b/thread.c
index 57adcba26a..bbf534f1b1 100644
--- a/thread.c
+++ b/thread.c
@@ -3785,7 +3785,11 @@ do_select(int n, rb_fdset_t *const readfds, rb_fdset_t *const writefds,
     rb_fdset_t MAYBE_UNUSED(orig_write);
     rb_fdset_t MAYBE_UNUSED(orig_except);
     struct timespec to;
-    struct timespec ts;
+    struct timespec ts
+#if defined(__GNUC__) && (__GNUC__ == 7 || __GNUC__ == 8)
+        = {0, 0}
+#endif
+        ;
     rb_thread_t *th = GET_THREAD();
 
 #define do_select_update() \