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parse_array: goto fail error handling 

Makes the control flow easier to reason about and fixes a few potential
memory leaks.
This commit is contained in:
Max Bruckner 2017-02-06 18:38:54 +01:00
parent 8656386c4f
commit 99cd9af7d5
1 changed files with 12 additions and 5 deletions
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17
cJSON.c
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@ -1127,7 +1127,7 @@ static const unsigned char *parse_array(cJSON *item, const unsigned char *value,
{
/* not an array! */
*ep = value;
return NULL;
goto fail;
}
item->type = cJSON_Array;
@ -1142,13 +1142,13 @@ static const unsigned char *parse_array(cJSON *item, const unsigned char *value,
if (!item->child)
{
/* memory fail */
return NULL;
goto fail;
}
/* skip any spacing, get the value. */
value = skip(parse_value(child, skip(value), ep));
if (!value)
{
return NULL;
goto fail;
}
/* loop through the comma separated array elements */
@ -1158,7 +1158,7 @@ static const unsigned char *parse_array(cJSON *item, const unsigned char *value,
if (!(new_item = cJSON_New_Item()))
{
/* memory fail */
return NULL;
goto fail;
}
/* add new item to end of the linked list */
child->next = new_item;
@ -1170,7 +1170,7 @@ static const unsigned char *parse_array(cJSON *item, const unsigned char *value,
if (!value)
{
/* memory fail */
return NULL;
goto fail;
}
}
@ -1183,6 +1183,13 @@ static const unsigned char *parse_array(cJSON *item, const unsigned char *value,
/* malformed. */
*ep = value;
fail:
if (item->child != NULL)
{
cJSON_Delete(item->child);
item->child = NULL;
}
return NULL;
}