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patch 9.0.0623: error for modifying a const is not detected at compile time

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Problem:    Error for modifying a const is not detected at compile time.
Solution:   Add TTFLAG_CONST and check for it in add() and extend().
This commit is contained in:
Bram Moolenaar
2022-09-29 19:14:42 +01:00
parent 9f573a8df0
commit fa1039760e
12 changed files with 446 additions and 62 deletions
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6
src/vim9instr.c
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@@ -1533,6 +1533,8 @@ generate_LISTAPPEND(cctx_T *cctx)
// For checking the item type we use the declared type of the list and the
// current type of the added item, adding a string to [1, 2] is OK.
list_type = get_decl_type_on_stack(cctx, 1);
if (arg_type_modifiable(list_type, 1) == FAIL)
return FAIL;
item_type = get_type_on_stack(cctx, 0);
expected = list_type->tt_member;
if (need_type(item_type, expected, -1, 0, cctx, FALSE, FALSE) == FAIL)
@@ -1554,7 +1556,9 @@ generate_BLOBAPPEND(cctx_T *cctx)
{
type_T *item_type;
// Caller already checked that blob_type is a blob.
// Caller already checked that blob_type is a blob, check it is modifiable.
if (arg_type_modifiable(get_decl_type_on_stack(cctx, 1), 1) == FAIL)
return FAIL;
item_type = get_type_on_stack(cctx, 0);
if (need_type(item_type, &t_number, -1, 0, cctx, FALSE, FALSE) == FAIL)
return FAIL;