# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1581372004 -3600
# Node ID 102f9a44c8b354c86ffcbe428235eb51078ab4b4
# Parent  91e051377c6527ab72a5707b0ca132bbfb781e12
patch 8.2.0241: crash when setting 'buftype' to "quickfix"

Commit: https://github.com/vim/vim/commit/99234f29aa8767f2e71bb1f5db6ee0131bc8e64e
Author: Bram Moolenaar <Bram@vim.org>
Date:   Mon Feb 10 22:56:54 2020 +0100

    patch 8.2.0241: crash when setting 'buftype' to "quickfix"

    Problem:    Crash when setting 'buftype' to "quickfix".
    Solution:   Check that error list is not NULL. (closes https://github.com/vim/vim/issues/5613)

diff --git a/src/quickfix.c b/src/quickfix.c
--- a/src/quickfix.c
+++ b/src/quickfix.c
@@ -4520,7 +4520,7 @@ qf_fill_buffer(qf_list_T *qfl, buf_T *bu
 	*dirname = NUL;
 
 	// Add one line for each error
-	if (old_last == NULL)
+	if (old_last == NULL || old_last->qf_next == NULL)
 	{
 	    qfp = qfl->qf_start;
 	    lnum = 0;
diff --git a/src/testdir/test_quickfix.vim b/src/testdir/test_quickfix.vim
--- a/src/testdir/test_quickfix.vim
+++ b/src/testdir/test_quickfix.vim
@@ -1628,6 +1628,13 @@ func Test_setqflist_invalid_nr()
   eval []->setqflist(' ', {'nr' : $XXX_DOES_NOT_EXIST})
 endfunc
 
+func Test_setqflist_user_sets_buftype()
+  call setqflist([{'text': 'foo'}, {'text': 'bar'}])
+  set buftype=quickfix
+  call setqflist([], 'a')
+  enew
+endfunc
+
 func Test_quickfix_set_list_with_act()
   call XquickfixSetListWithAct('c')
   call XquickfixSetListWithAct('l')
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -743,6 +743,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    241,
+/**/
     240,
 /**/
     239,