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Date: Fri, 1 Jun 2018 22:03:52 +0000
From: Eric Wong <normalperson@yhbt.net>
To: ruby-core@ruby-lang.org
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References: <redmine.issue-14807.20180601205127@ruby-lang.org>
 <redmine.issue-14807.20180601205127.ed0436109704bf0d@ruby-lang.org>
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Subject: [ruby-core:87346] Re: [Ruby trunk Bug#14807] 2.6.0-preview2
 segfaults on OpenBSD due to missing pthread_condattr_init call
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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.