patch 8.2.4642: Vim9: in :def function script var cannot be null
Problem: Vim9: in :def function script var cannot be null.
Solution: Only initialize a script variable when not set to a null value.
(closes #10034)
diff --git a/src/evalvars.c b/src/evalvars.c
index b49178f..202ada1 100644
--- a/src/evalvars.c
+++ b/src/evalvars.c
@@ -2823,7 +2823,7 @@
{
if (tv->v_type == VAR_DICT && tv->vval.v_dict == NULL
&& ((type != NULL && type != &t_dict_empty)
- || !in_vim9script()))
+ || !in_vim9script()))
{
tv->vval.v_dict = dict_alloc();
if (tv->vval.v_dict != NULL)
@@ -2843,6 +2843,14 @@
tv->vval.v_list->lv_type = alloc_type(type);
}
}
+ else if (tv->v_type == VAR_BLOB && tv->vval.v_blob == NULL
+ && ((type != NULL && type != &t_blob_null)
+ || !in_vim9script()))
+ {
+ tv->vval.v_blob = blob_alloc();
+ if (tv->vval.v_blob != NULL)
+ ++tv->vval.v_blob->bv_refcount;
+ }
}
copy_tv(tv, rettv);
}