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patch 7.4.1755

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Problem:    When using getreg() on a non-existing register a NULL list is
            returned. (Bjorn Linse)
Solution:   Allocate an empty list. Add a test.
This commit is contained in:
Bram Moolenaar
2016-04-20 14:59:29 +02:00
parent c3691332f7
commit 517ffbee0d
3 changed files with 15 additions and 2 deletions
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6
src/eval.c
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@@ -6051,7 +6051,7 @@ list_alloc(void)
}
/*
* Allocate an empty list for a return value.
* Allocate an empty list for a return value, with reference count set.
* Returns OK or FAIL.
*/
int
@@ -13173,7 +13173,9 @@ f_getreg(typval_T *argvars, typval_T *rettv)
rettv->v_type = VAR_LIST;
rettv->vval.v_list = (list_T *)get_reg_contents(regname,
(arg2 ? GREG_EXPR_SRC : 0) | GREG_LIST);
if (rettv->vval.v_list != NULL)
if (rettv->vval.v_list == NULL)
rettv_list_alloc(rettv);
else
++rettv->vval.v_list->lv_refcount;
}
else