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patch 9.1.1099: Vim9: import with extends may crash

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Problem:  Vim9: import with extends may crash, v9.1.1087 wasn't the
          correct way to fix it)
Solution: When using an import class, Check for a valid class member
          variable at compile time (Yegappan Lakshmanan)

related: #16601
closes: #16603

Signed-off-by: Yegappan Lakshmanan <yegappan@yahoo.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
Yegappan Lakshmanan
2025-02-10 21:35:07 +01:00
committed by Christian Brabandt
parent e3647c8bf5
commit 54d7f18c38
5 changed files with 9 additions and 13 deletions
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5
src/vim9compile.c
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@@ -2496,9 +2496,10 @@ compile_load_lhs(
lhs->lhs_type = cctx->ctx_type_stack.ga_len == 0 ? &t_void
: get_type_on_stack(cctx, 0);
if (lhs->lhs_type->tt_type == VAR_OBJECT)
if (lhs->lhs_type->tt_type == VAR_CLASS
|| lhs->lhs_type->tt_type == VAR_OBJECT)
{
// Check whether the object variable is modifiable
// Check whether the class or object variable is modifiable
if (!lhs_class_member_modifiable(lhs, var_start, cctx))
return FAIL;
}