# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1545858905 -3600
# Node ID a7d02a56b5d59c794b76231cd1ccfabdc471b33f
# Parent  ac8b7be7e2fac5b4c004d7d0ea3e22acdd31c276
patch 8.1.0641: no check for out-of-memory when converting regexp

commit https://github.com/vim/vim/commit/c57463c9c6ee893285f553e0ac3b2fe5935f16b8
Author: Bram Moolenaar <Bram@vim.org>
Date:   Wed Dec 26 22:04:41 2018 +0100

    patch 8.1.0641: no check for out-of-memory when converting regexp

    Problem:    No check for out-of-memory when converting regexp.
    Solution:   Bail out when lalloc() returns NULL. (John Marriott)

diff --git a/src/regexp_nfa.c b/src/regexp_nfa.c
--- a/src/regexp_nfa.c
+++ b/src/regexp_nfa.c
@@ -3218,8 +3218,10 @@ post2nfa(int *postfix, int *end, int nfa
 
     if (nfa_calc_size == FALSE)
     {
-	/* Allocate space for the stack. Max states on the stack : nstate */
+	// Allocate space for the stack. Max states on the stack: "nstate'.
 	stack = (Frag_T *)lalloc((nstate + 1) * sizeof(Frag_T), TRUE);
+	if (stack == NULL)
+	    return NULL;
 	stackp = stack;
 	stack_end = stack + (nstate + 1);
     }
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -800,6 +800,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    641,
+/**/
     640,
 /**/
     639,