commit c8103b4c2547ce2044469bcd49e3d55907bd33d1
author Bram Moolenaar <Bram@vim.org> Sat Aug 28 14:58:44 2021 +0200
committer Bram Moolenaar <Bram@vim.org> Sat Aug 28 14:58:44 2021 +0200
tree edad9a184a3ac542346383229a84a8e4a97d144c
parent 5c56da4de8398566ef96122db44ec93e6c2d483a

patch 8.2.3382: crash when getting the type of a NULL partial

Problem:    Crash when getting the type of a NULL partial.
Solution:   Check for NULL. (closes #8260)

src/testdir/test_vim9_builtin.vim

diff --git a/src/testdir/test_vim9_builtin.vim b/src/testdir/test_vim9_builtin.vim
index 434f477..c166a43 100644
--- a/src/testdir/test_vim9_builtin.vim
+++ b/src/testdir/test_vim9_builtin.vim
@@ -3679,6 +3679,15 @@
   if has('float')
     assert_equal('func([unknown], [unknown]): float', typename(function('pow')))
   endif
+  assert_equal('func', test_null_partial()->typename())
+  assert_equal('list<unknown>', test_null_list()->typename())
+  assert_equal('dict<unknown>', test_null_dict()->typename())
+  if has('job')
+    assert_equal('job', test_null_job()->typename())
+  endif
+  if has('channel')
+    assert_equal('channel', test_null_channel()->typename())
+  endif
 enddef
 
 def Test_undofile()

src/version.c

diff --git a/src/version.c b/src/version.c
index 1fffa73..77935e5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3382,
+/**/
     3381,
 /**/
     3380,

src/vim9type.c

diff --git a/src/vim9type.c b/src/vim9type.c
index d6e01cd..c14b97f 100644
--- a/src/vim9type.c
+++ b/src/vim9type.c
@@ -327,7 +327,7 @@
 	char_u	*name = NULL;
 	ufunc_T *ufunc = NULL;
 
-	if (tv->v_type == VAR_PARTIAL)
+	if (tv->v_type == VAR_PARTIAL && tv->vval.v_partial != NULL)
 	{
 	    if (tv->vval.v_partial->pt_func != NULL)
 		ufunc = tv->vval.v_partial->pt_func;
@@ -382,7 +382,8 @@
     type->tt_type = tv->v_type;
     type->tt_argcount = argcount;
     type->tt_min_argcount = min_argcount;
-    if (tv->v_type == VAR_PARTIAL && tv->vval.v_partial->pt_argc > 0)
+    if (tv->v_type == VAR_PARTIAL && tv->vval.v_partial != NULL
+					    && tv->vval.v_partial->pt_argc > 0)
     {
 	type->tt_argcount -= tv->vval.v_partial->pt_argc;
 	type->tt_min_argcount -= tv->vval.v_partial->pt_argc;