[ruby-core:88524] Re: [Ruby trunk Bug#14999] ConditionVariable doesn't reacquire the Mutex if Thread#kill-ed

[e-mail] wrote:
> @normalperson I added the specs in r64409.
> However I just saw that the spec failed once on Ubuntu:
> https://rubyci.org/logs/rubyci.s3.amazonaws.com/ubuntu/ruby-trunk/log/20180817T213003Z.fail.html.gz

It might be because of rb_funcallv switching and hitting
interrupts.  I think this should fix it, but it can make
an incompatibility if somebody relies on redefining
Mutex#sleep...


```
diff --git a/thread_sync.c b/thread_sync.c
index 5e511af0db..87c17316a9 100644
--- a/thread_sync.c
+++ b/thread_sync.c
@@ -1358,7 +1358,7 @@ static VALUE
 do_sleep(VALUE args)
 {
     struct sleep_call *p = (struct sleep_call *)args;
-    return rb_funcallv(p->mutex, id_sleep, 1, &p->timeout);
+    return rb_mutex_sleep(p->mutex, p->timeout);
 }
 
 static VALUE
```

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