merge revision(s) 53449: [Backport #11959]

	* thread.c (rb_thread_pending_interrupt_p): no pending interrupt
	  before initialization.

	* thread.c (thread_raise_m, rb_thread_kill): uninitialized thread
	  cannot interrupt.  [ruby-core:72732] [Bug #11959]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@56564 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 13 insertions, 0 deletions

diff --git a/thread.c b/thread.c
index 4fadbd91aa..85586521d8 100644
--- a/thread.c
+++ b/thread.c
@@ -1561,6 +1561,14 @@ rb_threadptr_pending_interrupt_enque(rb_thread_t *th, VALUE v)
     th->pending_interrupt_queue_checked = 0;
 }
 
+static void
+threadptr_check_pending_interrupt_queue(rb_thread_t *th)
+{
+    if (!th->pending_interrupt_queue) {
+	rb_raise(rb_eThreadError, "uninitialized thread");
+    }
+}
+
 enum handle_interrupt_timing {
     INTERRUPT_NONE,
     INTERRUPT_IMMEDIATE,
@@ -1868,6 +1876,9 @@ rb_thread_pending_interrupt_p(int argc, VALUE *argv, VALUE target_thread)
 
     GetThreadPtr(target_thread, target_th);
 
+    if (!target_th->pending_interrupt_queue) {
+	return Qfalse;
+    }
     if (rb_threadptr_pending_interrupt_empty_p(target_th)) {
 	return Qfalse;
     }
@@ -2181,6 +2192,7 @@ thread_raise_m(int argc, VALUE *argv, VALUE self)
     rb_thread_t *target_th;
     rb_thread_t *th = GET_THREAD();
     GetThreadPtr(self, target_th);
+    threadptr_check_pending_interrupt_queue(target_th);
     rb_threadptr_raise(target_th, argc, argv);
 
     /* To perform Thread.current.raise as Kernel.raise */
@@ -2225,6 +2237,7 @@ rb_thread_kill(VALUE thread)
 	rb_threadptr_to_kill(th);
     }
     else {
+	threadptr_check_pending_interrupt_queue(th);
 	rb_threadptr_pending_interrupt_enque(th, eKillSignal);
 	rb_threadptr_interrupt(th);
     }