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patch 9.0.1862: Vim9 Garbage Collection issues

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Problem:  Vim9 Garbage Collection issues
Solution: Class members are garbage collected early leading to
          use-after-free problems.  Handle the garbage
          collection of classes properly.

closes: #13019

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>
This commit is contained in:
Yegappan Lakshmanan
2023-09-04 07:51:01 +02:00
committed by Christian Brabandt
parent 233f956bd4
commit e651e110c1
7 changed files with 159 additions and 68 deletions
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src/structs.h
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@@ -1525,6 +1525,8 @@ struct class_S
int class_refcount;
int class_copyID; // used by garbage collection
class_T *class_next_used; // for list headed by "first_class"
class_T *class_prev_used; // for list headed by "first_class"
class_T *class_extends; // parent class or NULL