From 52cdf400efaecc0f5e1d1f70f22dc45212e03c4c Mon Sep 17 00:00:00 2001 From: Nobuyoshi Nakada Date: Tue, 11 Feb 2020 11:28:31 +0900 Subject: Workaround of instance variable on hidden object Since 9d9aea7fe50f6340829faa105d9ffe08ebaee658, generic instance variables need `iv_index_tbl` in the object's class. As hidden objects, however, have no class, access to the variables causes a segfault. Get rid of that segfault by raising an exception, for the time being. --- variable.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'variable.c') diff --git a/variable.c b/variable.c index 646d60d6eb..2dba76668b 100644 --- a/variable.c +++ b/variable.c @@ -1134,9 +1134,12 @@ static st_table * iv_index_tbl_make(VALUE obj) { VALUE klass = rb_obj_class(obj); - st_table *iv_index_tbl = RCLASS_IV_INDEX_TBL(klass); + st_table *iv_index_tbl; - if (!iv_index_tbl) { + if (!klass) { + rb_raise(rb_eTypeError, "hidden object cannot have instance variables"); + } + if (!(iv_index_tbl = RCLASS_IV_INDEX_TBL(klass))) { iv_index_tbl = RCLASS_IV_INDEX_TBL(klass) = st_init_numtable(); } -- cgit v1.2.3