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Fix double to int cast overflow in json_object_get_int64.

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Found with autofuzz in GDAL
This commit is contained in:
Kurt Schwehr
2017-09-11 07:23:00 -07:00
parent 5454c4eaa3
commit d9879c2533
1 changed files with 4 additions and 0 deletions
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4
json_object.c
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@@ -688,6 +688,10 @@ int64_t json_object_get_int64(const struct json_object *jso)
case json_type_int: case json_type_int:
return jso->o.c_int64; return jso->o.c_int64;
case json_type_double: case json_type_double:
if (jso->o.c_double >= INT64_MAX)
return INT64_MAX;
if (jso->o.c_double <= INT64_MIN)
return INT64_MIN;
return (int64_t)jso->o.c_double; return (int64_t)jso->o.c_double;
case json_type_boolean: case json_type_boolean:
return jso->o.c_boolean; return jso->o.c_boolean;