commit 6456fae9ba8e72c74b2c0c499eaf09974604ff30
author Bram Moolenaar <Bram@vim.org> Tue Feb 22 13:37:31 2022 +0000
committer Bram Moolenaar <Bram@vim.org> Tue Feb 22 13:37:31 2022 +0000
tree 25484c863782a37837996f13bc0dc96d266892ec
parent 1349bd712cf7d24dc65408c523dd7deb30224f80

patch 8.2.4440: crash with specific regexp pattern and string

Problem:    Crash with specific regexp pattern and string.
Solution:   Stop at the start of the string.

src/testdir/test_regexp_utf8.vim

diff --git a/src/testdir/test_regexp_utf8.vim b/src/testdir/test_regexp_utf8.vim
index 674eee5..9f5b288 100644
--- a/src/testdir/test_regexp_utf8.vim
+++ b/src/testdir/test_regexp_utf8.vim
@@ -508,7 +508,6 @@
 " Check that [[:upper:]] matches for automatic engine
 func Test_match_char_class_upper()
   new
-  let _engine=&regexpengine
 
   " Test 1: [[:upper:]]\{2,\}
   set regexpengine=0
@@ -549,7 +548,7 @@
   call assert_equal(4, searchcount().total, 'TEST 3 lower')
 
   " clean up
-  let &regexpengine=_engine
+  set regexpengine=0
   bwipe!
 endfunc
 
@@ -561,4 +560,13 @@
   call delete('Xinvalid')
 endfunc
 
+func Test_match_too_complicated()
+  set regexpengine=1
+  exe "vsplit \xeb\xdb\x99"
+  silent! buf \&\zs*\zs*0
+  bwipe!
+  set regexpengine=0
+endfunc
+
+
 " vim: shiftwidth=2 sts=2 expandtab