vim-patch:9.0.1499: using uninitialized memory with fuzzy matching (#23399)

Problem:    Using uninitialized memory with fuzzy matching.
Solution:   Initialize the arrays used to store match positions.

https://github.com/vim/vim/commit/caf642c25de526229264cab9425e7c9979f3509b

Co-authored-by: Bram Moolenaar <Bram@vim.org>

1 files changed, 27 insertions, 0 deletions

diff --git a/test/old/testdir/test_matchfuzzy.vim b/test/old/testdir/test_matchfuzzy.vim
index be5c629cf5..90f3366b23 100644
--- a/test/old/testdir/test_matchfuzzy.vim
+++ b/test/old/testdir/test_matchfuzzy.vim
@@ -2,6 +2,7 @@
 
 source shared.vim
 source check.vim
+source term_util.vim
 
 " Test for matchfuzzy()
 func Test_matchfuzzy()
@@ -260,4 +261,30 @@ func Test_matchfuzzy_limit()
   call assert_equal([{'id': 5, 'val': 'crayon'}], l->matchfuzzy('c', #{key: 'val', limit: 1}))
 endfunc
 
+" This was using uninitialized memory
+func Test_matchfuzzy_initialized()
+  CheckRunVimInTerminal
+
+  " This can take a very long time (esp. when using valgrind).  Run in a
+  " separate Vim instance and kill it after two seconds.  We only check for
+  " memory errors.
+  let lines =<< trim END
+      lvimgrep [ss [fg*
+  END
+  call writefile(lines, 'XTest_matchfuzzy', 'D')
+
+  let buf = RunVimInTerminal('-u NONE -X -Z', {})
+  call term_sendkeys(buf, ":source XTest_matchfuzzy\n")
+  call TermWait(buf, 2000)
+
+  let job = term_getjob(buf)
+  if job_status(job) == "run"
+    call job_stop(job, "int")
+    call TermWait(buf, 50)
+  endif
+
+  " clean up
+  call StopVimInTerminal(buf)
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab