commit d28cc3f55d4a5a980f6ac6fa682382822a223720
author Bram Moolenaar <Bram@vim.org> Thu Jul 27 22:03:50 2017 +0200
committer Bram Moolenaar <Bram@vim.org> Thu Jul 27 22:03:50 2017 +0200
tree afbd1226f742817a8a86a8d256587bf2a93a7daf
parent ab6eec3887d68c260b50b1b8f9ed95d49d9306c6

patch 8.0.0782: using freed memory in quickfix code

Problem:    Using freed memory in quickfix code. (Dominique Pelle)
Solution:   Handle a help window differently. (Yegappan Lakshmanan)

src/testdir/test_quickfix.vim

diff --git a/src/testdir/test_quickfix.vim b/src/testdir/test_quickfix.vim
index 7b344ea..41e5021 100644
--- a/src/testdir/test_quickfix.vim
+++ b/src/testdir/test_quickfix.vim
@@ -2287,3 +2287,17 @@
     call Xchangedtick_tests('c')
     call Xchangedtick_tests('l')
 endfunc
+
+" Open multiple help windows using ":lhelpgrep
+" This test used to crash Vim
+func Test_Multi_LL_Help()
+    new | only
+    lhelpgrep window
+    lopen
+    e#
+    lhelpgrep buffer
+    call assert_equal(3, winnr('$'))
+    call assert_true(len(getloclist(1)) != 0)
+    call assert_true(len(getloclist(2)) != 0)
+    new | only
+endfunc