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patch 9.1.0688: Vim9: dereferences NULL pointer in check_type_is_value()

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Problem:  Vim9: dereferences NULL pointer in check_type_is_value()
          (Suyue Guo)
Solution: Verify that the pointer is not Null

fixes: #15540
closes: #15545

Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
Christian Brabandt
2024-08-22 21:25:18 +02:00
parent dabf07e458
commit 25618fc9ea
3 changed files with 14 additions and 2 deletions
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5
src/vim9type.c
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@@ -2138,12 +2138,13 @@ check_type_is_value(type_T *type)
switch (type->tt_type)
{
case VAR_CLASS:
if (IS_ENUM(type->tt_class))
if (type->tt_class != NULL && IS_ENUM(type->tt_class))
semsg(_(e_using_enum_as_value_str),
type->tt_class->class_name);
else
semsg(_(e_using_class_as_value_str),
type->tt_class->class_name);
type->tt_class == NULL ? (char_u *)""
: type->tt_class->class_name);
return FAIL;
case VAR_TYPEALIAS: