From 5ad075c0735d3d8b97708d17c22de8facb15f997 Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Tue, 24 Nov 2015 15:18:32 +0100
Subject: [PATCH] patch 7.4.937 Problem:    Segfault reading unitialized
 memory. Solution:   Do not read match \z0, it does not exist. (Marius
 Gedminas, closes             #497)

---
 src/regexp_nfa.c | 3 ++-
 src/version.c    | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/regexp_nfa.c b/src/regexp_nfa.c
index a21c3c03f8..32108bee4c 100644
--- a/src/regexp_nfa.c
+++ b/src/regexp_nfa.c
@@ -6947,7 +6947,8 @@ nfa_regtry(prog, col, tm)
     {
 	cleanup_zsubexpr();
 	re_extmatch_out = make_extmatch();
-	for (i = 0; i < subs.synt.in_use; i++)
+	/* Loop over \z1, \z2, etc.  There is no \z0. */
+	for (i = 1; i < subs.synt.in_use; i++)
 	{
 	    if (REG_MULTI)
 	    {
diff --git a/src/version.c b/src/version.c
index 9f0cfbf6a3..82e5f350d1 100644
--- a/src/version.c
+++ b/src/version.c
@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    937,
 /**/
     936,
 /**/