From: Eric Wong <normalperson@...>
Date: 2018-06-01T22:03:52+00:00
Subject: [ruby-core:87346] Re: [Ruby trunk Bug#14807] 2.6.0-preview2 segfaults on OpenBSD due to missing pthread_condattr_init call

Thanks, r63548

Btw, is PTHREAD_COND_INITIALIZER supported on OpenBSD?

Something like this:
```
--- a/thread_pthread.c
+++ b/thread_pthread.c
@@ -55,7 +55,7 @@ static struct {
 #if defined(HAVE_PTHREAD_CONDATTR_SETCLOCK) && \
     defined(CLOCK_REALTIME) && defined(CLOCK_MONOTONIC) && \
     defined(HAVE_CLOCK_GETTIME)
-static pthread_condattr_t condattr_mono;
+static pthread_condattr_t condattr_mono = PTHREAD_COND_INITIALIZER;
 static pthread_condattr_t *condattr_monotonic = &condattr_mono;
 #else
 static const void *const condattr_monotonic = NULL;
```

...And reverting your patch.  Should save a few instructions at
startup since it avoids linkage and function call at startup.

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