# HG changeset patch
# User Christian Brabandt <cb@256bit.org>
# Date 1524510007 -7200
# Node ID 0d199e59a98865c39e044af6e4e933860d0384b5
# Parent  5bc0ef8e60a14e0fc9dc88c2cbceb4efc53b6f59
patch 8.0.1749: VMS: 100% CPU use, redefining mch_open() fails

commit https://github.com/vim/vim/commit/6537c421bb626ee92a2487a543e6287d33461bd0
Author: Bram Moolenaar <Bram@vim.org>
Date:   Mon Apr 23 20:46:16 2018 +0200

    patch 8.0.1749: VMS: 100% CPU use, redefining mch_open() fails

    Problem:    VMS: 100% CPU use, redefining mch_open() and mch_fopen() fails.
    Solution:   Do not wait indefinitely in RealWaitForChar(). (Neil Rieck)
                Do not redefine mch_open() and mch_fopen() on VMS. (Zoltan
                Arpadffy)

diff --git a/src/os_vms.c b/src/os_vms.c
--- a/src/os_vms.c
+++ b/src/os_vms.c
@@ -784,7 +784,7 @@ RealWaitForChar(
 	    return 0;
 	} else if (msec < 0) {
 	    /* no time-out; wait on indefinitely */
-	    continue;
+	    return 1; /* fakeout to force a wait in vms_read() */
 	} else {
 	    /* time-out needs to be checked */
 	    status = sys$gettim(&time_curr);
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -762,6 +762,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1749,
+/**/
     1748,
 /**/
     1747,
diff --git a/src/vim.h b/src/vim.h
--- a/src/vim.h
+++ b/src/vim.h
@@ -2154,8 +2154,9 @@ typedef enum {
 # define number_width(x) 7
 #endif
 
-/* This must come after including proto.h */
-#if !(defined(FEAT_MBYTE) && defined(WIN3264))
+/* This must come after including proto.h.
+ * For VMS this is defined in macros.h. */
+#if !(defined(FEAT_MBYTE) && defined(WIN3264)) && !defined(VMS)
 # define mch_open(n, m, p)	open((n), (m), (p))
 # define mch_fopen(n, p)	fopen((n), (p))
 #endif