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Clamp double to int32 when narrowing in json_object_get_int.

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Avoids undefined behavior.  Found by autofuzz.
This commit is contained in:
Kurt Schwehr
2017-08-08 07:54:38 -07:00
parent af87944585
commit ef7b08ce7f
1 changed files with 4 additions and 0 deletions
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4
json_object.c
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@@ -635,6 +635,10 @@ int32_t json_object_get_int(const struct json_object *jso)
return INT32_MAX;
return (int32_t) cint64;
case json_type_double:
if (jso->o.c_double <= INT32_MIN)
return INT32_MIN;
if (jso->o.c_double >= INT32_MAX)
return INT32_MAX;
return (int32_t)jso->o.c_double;
case json_type_boolean:
return jso->o.c_boolean;