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patch 8.2.2272: Vim9: extend() can violate the type of a variable

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Problem:    Vim9: extend() can violate the type of a variable.
Solution:   Add the type to the dictionary or list and check items against it.
            (closes #7593)
This commit is contained in:
Bram Moolenaar
2021-01-02 15:41:03 +01:00
parent 3e0107ea16
commit aa210a3aec
11 changed files with 149 additions and 13 deletions
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2
src/structs.h
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@@ -1481,6 +1481,7 @@ struct listvar_S
int lv_idx; // cached index of an item
} mat;
} lv_u;
type_T *lv_type; // allocated by alloc_type()
list_T *lv_copylist; // copied list used by deepcopy()
list_T *lv_used_next; // next list in used lists list
list_T *lv_used_prev; // previous list in used lists list
@@ -1544,6 +1545,7 @@ struct dictvar_S
int dv_refcount; // reference count
int dv_copyID; // ID used by deepcopy()
hashtab_T dv_hashtab; // hashtab that refers to the items
type_T *dv_type; // allocated by alloc_type()
dict_T *dv_copydict; // copied dict used by deepcopy()
dict_T *dv_used_next; // next dict in used dicts list
dict_T *dv_used_prev; // previous dict in used dicts list