From a0ac471c1af4d0a6df12021d51dcbfe4ced267aa Mon Sep 17 00:00:00 2001
From: Pavel Puchkin <i@neoascetic.me>
Date: Mon, 8 Dec 2014 11:41:29 +0200
Subject: [PATCH] Fixes #1687 by extra semaphore retval handle code for OSX

See https://github.com/minetest/minetest/issues/1687#issuecomment-56830173

Signed-off-by: Craig Robbins <kde.psych@gmail.com>
---
 src/jthread/pthread/jsemaphore.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/jthread/pthread/jsemaphore.cpp b/src/jthread/pthread/jsemaphore.cpp
index 609e2f518..16e001e92 100644
--- a/src/jthread/pthread/jsemaphore.cpp
+++ b/src/jthread/pthread/jsemaphore.cpp
@@ -115,6 +115,13 @@ bool JSemaphore::Wait(unsigned int time_ms) {
 	errno = 0;
 #ifdef __MACH__
 	int sem_wait_retval = semaphore_timedwait(m_semaphore, waittime);
+	if (sem_wait_retval == KERN_OPERATION_TIMED_OUT) {
+		errno = ETIMEDOUT;
+	} else if (sem_wait_retval == KERN_ABORTED) {
+		errno = EINTR;
+	} else if (sem_wait_retval != 0) {
+		errno = EINVAL;
+	}
 #else
 	int sem_wait_retval = sem_timedwait(&m_semaphore, &waittime);
 #endif