From e4e4859de18734abf3e230ffc960bf3cdf3ce447 Mon Sep 17 00:00:00 2001
From: kamil <kamil@NetBSD.org>
Date: Tue, 14 Jan 2020 18:18:59 +0000
Subject: [PATCH] Adjust the error return value of pthread_sigmask for
 !libpthread usage

Instead of returning -1, return errno on error.

Catch up after the fix in libpthread by Andrew Doran in 2008
in lib/libpthread/pthread_misc.c r.1.9.

It's an open question whether this function shall be used without linked
in the POSIX thread library.

Detected by Bruno Haible (GNU) and documented in gnulib in commit
"pthread_sigmask: Avoid test failure on NetBSD 8.0. " r. 4d16a83b0c1fcb6c.
---
 lib/libc/thread-stub/thread-stub.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/lib/libc/thread-stub/thread-stub.c b/lib/libc/thread-stub/thread-stub.c
index c89fafbedee3..93b20e03281a 100644
--- a/lib/libc/thread-stub/thread-stub.c
+++ b/lib/libc/thread-stub/thread-stub.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: thread-stub.c,v 1.29 2019/03/05 01:35:52 christos Exp $	*/
+/*	$NetBSD: thread-stub.c,v 1.30 2020/01/14 18:18:59 kamil Exp $	*/
 
 /*-
  * Copyright (c) 2003, 2009 The NetBSD Foundation, Inc.
@@ -31,7 +31,7 @@
 
 #include <sys/cdefs.h>
 #if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: thread-stub.c,v 1.29 2019/03/05 01:35:52 christos Exp $");
+__RCSID("$NetBSD: thread-stub.c,v 1.30 2020/01/14 18:18:59 kamil Exp $");
 #endif /* LIBC_SCCS and not lint */
 
 /*
@@ -382,7 +382,9 @@ __libc_thr_sigsetmask_stub(int h, const sigset_t *s, sigset_t *o)
 
 	CHECK_NOT_THREADED();
 
-	return sigprocmask(h, s, o);
+	if (sigprocmask(h, s, o))
+		return errno;
+	return 0;
 }
 
 thr_t