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patch 8.2.2600: Vim9: crash when putting an unknown type in a dictionary

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Problem:    Vim9: crash when putting an unknown type in a dictionary.
            (Yegappan Lakshmanan)
Solution:   Handle a NULL type pointer.
This commit is contained in:
Bram Moolenaar
2021-03-13 21:24:56 +01:00
parent edba70703b
commit 93e1cae739
3 changed files with 26 additions and 2 deletions
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6
src/vim9type.c
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@@ -919,6 +919,8 @@ equal_type(type_T *type1, type_T *type2)
{
int i;
if (type1 == NULL || type2 == NULL)
return FALSE;
if (type1->tt_type != type2->tt_type)
return FALSE;
switch (type1->tt_type)
@@ -969,12 +971,12 @@ common_type(type_T *type1, type_T *type2, type_T **dest, garray_T *type_gap)
// If either is VAR_UNKNOWN use the other type. An empty list/dict has no
// specific type.
if (type1->tt_type == VAR_UNKNOWN)
if (type1 == NULL || type1->tt_type == VAR_UNKNOWN)
{
*dest = type2;
return;
}
if (type2->tt_type == VAR_UNKNOWN)
if (type2 == NULL || type2->tt_type == VAR_UNKNOWN)
{
*dest = type1;
return;