From ec70bdd68a531762a62728747ab529d7a6dfc842 Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Thu, 18 Feb 2016 22:17:42 +0100
Subject: patch 7.4.1350 Problem:    When the test server fails to start Vim
 hangs. Solution:   Check that there is actually something to read from the
 tty fd.

---
 src/os_unix.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

(limited to 'src/os_unix.c')

diff --git a/src/os_unix.c b/src/os_unix.c
index 1f0f2c804..cebef645c 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -5345,11 +5345,12 @@ WaitForChar(long msec)
 #if defined(__BEOS__)
     int
 #else
-    static  int
+    static int
 #endif
 RealWaitForChar(int fd, long msec, int *check_for_gpm UNUSED)
 {
     int		ret;
+    int		result;
 #if defined(FEAT_XCLIPBOARD) || defined(USE_XSMP) || defined(FEAT_MZSCHEME)
     static int	busy = FALSE;
 
@@ -5466,6 +5467,9 @@ RealWaitForChar(int fd, long msec, int *check_for_gpm UNUSED)
 #endif
 
 	ret = poll(fds, nfd, towait);
+
+	result = ret > 0 && (fds[0].revents & POLLIN);
+
 # ifdef FEAT_MZSCHEME
 	if (ret == 0 && mzquantum_used)
 	    /* MzThreads scheduling is required and timeout occurred */
@@ -5613,6 +5617,10 @@ select_eintr:
 # endif
 
 	ret = select(maxfd + 1, &rfds, NULL, &efds, tvp);
+	result = ret > 0 && FD_ISSET(fd, &rfds);
+	if (result)
+	    --ret;
+
 # ifdef EINTR
 	if (ret == -1 && errno == EINTR)
 	{
@@ -5733,7 +5741,7 @@ select_eintr:
 #endif
     }
 
-    return (ret > 0);
+    return result;
 }
 
 #ifndef NO_EXPANDPATH
-- 
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