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patch 8.2.4831: crash when using maparg() and unmapping simplified keys

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Problem:    Crash when using maparg() and unmapping simplified keys.
Solution:   Do not keep a mapblock pointer. (closes #10294)
This commit is contained in:
zeertzjq
2022-04-26 21:36:21 +01:00
committed by Bram Moolenaar
parent 23f106efeb
commit 2c8a7ebdad
3 changed files with 11 additions and 5 deletions
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7
src/map.c
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@@ -2325,8 +2325,7 @@ get_maparg(typval_T *argvars, typval_T *rettv, int exact)
int mode;
int abbr = FALSE;
int get_dict = FALSE;
mapblock_T *mp;
mapblock_T *mp_simplified = NULL;
mapblock_T *mp = NULL;
int buffer_local;
int flags = REPTERM_FROM_PART | REPTERM_DO_LT;
@@ -2362,8 +2361,6 @@ get_maparg(typval_T *argvars, typval_T *rettv, int exact)
{
// When the lhs is being simplified the not-simplified keys are
// preferred for printing, like in do_map().
// The "rhs" and "buffer_local" values are not expected to change.
mp_simplified = mp;
(void)replace_termcodes(keys, &alt_keys_buf,
flags | REPTERM_NO_SIMPLIFY, NULL);
rhs = check_map(alt_keys_buf, mode, exact, FALSE, abbr, &mp,
@@ -2384,7 +2381,7 @@ get_maparg(typval_T *argvars, typval_T *rettv, int exact)
}
else if (rettv_dict_alloc(rettv) != FAIL && rhs != NULL)
mapblock2dict(mp, rettv->vval.v_dict,
did_simplify ? mp_simplified->m_keys : NULL, buffer_local);
did_simplify ? keys_simplified : NULL, buffer_local);
vim_free(keys_buf);
vim_free(alt_keys_buf);