# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1571489104 -7200
# Node ID 7b4d9e1377ee2b02427484a562fff708af2edc84
# Parent  fe4dd24be6a262ad9fb82160a441066eef2f9989
patch 8.1.2178: accessing uninitialized memory in test

Commit: https://github.com/vim/vim/commit/15ee567809a9808693163dd7c357ef0c172ecc9e
Author: Bram Moolenaar <Bram@vim.org>
Date:   Sat Oct 19 14:35:02 2019 +0200

    patch 8.1.2178: accessing uninitialized memory in test

    Problem:    Accessing uninitialized memory in test.
    Solution:   Check if there was a match before using the match position.
                (Dominique Pelle, closes #5088)

diff --git a/src/search.c b/src/search.c
--- a/src/search.c
+++ b/src/search.c
@@ -4877,7 +4877,7 @@ is_one_char(char_u *pattern, int move, p
 	    regmatch.startpos[0].col++;
 	    nmatched = vim_regexec_multi(&regmatch, curwin, curbuf,
 			       pos.lnum, regmatch.startpos[0].col, NULL, NULL);
-	    if (!nmatched)
+	    if (nmatched != 0)
 		break;
 	} while (direction == FORWARD ? regmatch.startpos[0].col < pos.col
 				      : regmatch.startpos[0].col > pos.col);
@@ -4887,8 +4887,9 @@ is_one_char(char_u *pattern, int move, p
 	    result = (nmatched != 0
 		&& regmatch.startpos[0].lnum == regmatch.endpos[0].lnum
 		&& regmatch.startpos[0].col == regmatch.endpos[0].col);
-	    /* one char width */
-	    if (!result && inc(&pos) >= 0 && pos.col == regmatch.endpos[0].col)
+	    // one char width
+	    if (!result && nmatched != 0
+			&& inc(&pos) >= 0 && pos.col == regmatch.endpos[0].col)
 		result = TRUE;
 	}
     }
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2178,
+/**/
     2177,
 /**/
     2176,