diff options
Diffstat (limited to 'ext/json/generator')
| -rw-r--r-- | ext/json/generator/generator.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/ext/json/generator/generator.c b/ext/json/generator/generator.c index 06509ca93f..1b9652df24 100644 --- a/ext/json/generator/generator.c +++ b/ext/json/generator/generator.c @@ -965,6 +965,7 @@ static VALUE cState_init_copy(VALUE obj, VALUE orig) { JSON_Generator_State *objState, *origState; + if (obj == orig) return obj; Data_Get_Struct(obj, JSON_Generator_State, objState); Data_Get_Struct(orig, JSON_Generator_State, origState); if (!objState) rb_raise(rb_eArgError, "unallocated JSON::State"); |