# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1681313404 -7200
# Node ID a5b5d8df57634c5f4d3794eb83e65012d2e0b531
# Parent  07e248d5b72ba5bbb124c133601267db14a985f1
patch 9.0.1444: crash when passing NULL to setcmdline()

Commit: https://github.com/vim/vim/commit/ac6cd31afcbdd08bfa92ca33f7d4ce5773ba4353
Author: zeertzjq <zeertzjq@outlook.com>
Date:   Wed Apr 12 16:21:14 2023 +0100

    patch 9.0.1444: crash when passing NULL to setcmdline()

    Problem:    Crash when passing NULL to setcmdline(). (Andreas Louv)
    Solution:   Use tv_get_string() instead of using v_string directly.
                (closes #12231, closes #12227)

diff --git a/src/ex_getln.c b/src/ex_getln.c
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -4294,7 +4294,8 @@ f_setcmdline(typval_T *argvars, typval_T
 	}
     }
 
-    rettv->vval.v_number = set_cmdline_str(argvars[0].vval.v_string, pos);
+    // Use tv_get_string() to handle a NULL string like an empty string.
+    rettv->vval.v_number = set_cmdline_str(tv_get_string(&argvars[0]), pos);
 }
 
 /*
diff --git a/src/testdir/test_cmdline.vim b/src/testdir/test_cmdline.vim
--- a/src/testdir/test_cmdline.vim
+++ b/src/testdir/test_cmdline.vim
@@ -3393,6 +3393,14 @@ endfunc
 
 func Test_setcmdline()
   func SetText(text, pos)
+    call assert_equal(0, setcmdline(test_null_string()))
+    call assert_equal('', getcmdline())
+    call assert_equal(1, getcmdpos())
+
+    call assert_equal(0, setcmdline(''[: -1]))
+    call assert_equal('', getcmdline())
+    call assert_equal(1, getcmdpos())
+
     autocmd CmdlineChanged * let g:cmdtype = expand('<afile>')
     call assert_equal(0, setcmdline(a:text))
     call assert_equal(a:text, getcmdline())
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1444,
+/**/
     1443,
 /**/
     1442,