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MDEV-11857 json_search() shows "Out of memory" with empty key.

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We should be ready for an empty key.
This commit is contained in:
Alexey Botchkov
2017-02-09 17:38:53 +04:00
parent 66c6188a4b
commit 0e6968c244
3 changed files with 16 additions and 5 deletions
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12
sql/item_jsonfunc.cc
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@ -147,8 +147,10 @@ static int json_nice(json_engine_t *je, String *nice_js,
const uchar *key_start= je->s.c_str;
const uchar *key_end;
while (json_read_keyname_chr(je) == 0)
do
{
key_end= je->s.c_str;
} while (json_read_keyname_chr(je) == 0);
if (je->s.error)
goto error;
@ -892,8 +894,10 @@ static int check_contains(json_engine_t *js, json_engine_t *value)
DBUG_ASSERT(value->state == JST_KEY);
k_start= value->s.c_str;
while (json_read_keyname_chr(value) == 0)
do
{
k_end= value->s.c_str;
} while (json_read_keyname_chr(value) == 0);
if (value->s.error || json_read_value(value))
return FALSE;
@ -2527,10 +2531,10 @@ skip_search:
{
case JST_KEY:
key_start= je.s.c_str;
while (json_read_keyname_chr(&je) == 0)
do
{
key_end= je.s.c_str;
}
} while (json_read_keyname_chr(&je) == 0);
if (je.s.error ||
(n_keys > 0 && str->append(", ", 2)) ||
str->append("\"", 1) ||