patch 7.4.1816
Problem: Looping over a null list throws an error.
Solution: Skip over the for loop.
diff --git a/src/eval.c b/src/eval.c
index fa2f839..83bac72 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -3292,11 +3292,16 @@
if (!skip)
{
l = tv.vval.v_list;
- if (tv.v_type != VAR_LIST || l == NULL)
+ if (tv.v_type != VAR_LIST)
{
EMSG(_(e_listreq));
clear_tv(&tv);
}
+ else if (l == NULL)
+ {
+ /* a null list is like an empty list: do nothing */
+ clear_tv(&tv);
+ }
else
{
/* No need to increment the refcount, it's already set for the
diff --git a/src/testdir/test_expr.vim b/src/testdir/test_expr.vim
index a726933..2cd9625 100644
--- a/src/testdir/test_expr.vim
+++ b/src/testdir/test_expr.vim
@@ -83,3 +83,10 @@
call add(x, 'foo')
call assert_equal(['foo'], y)
endfunc
+
+func Test_loop_over_null_list()
+ let null_list = submatch(1, 1)
+ for i in null_list
+ call assert_true(0, 'should not get here')
+ endfor
+endfunc
diff --git a/src/version.c b/src/version.c
index 3ecf611..cf4e294 100644
--- a/src/version.c
+++ b/src/version.c
@@ -754,6 +754,8 @@
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
+ 1816,
+/**/
1815,
/**/
1814,
