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| author | Nobuyoshi Nakada <nobu@ruby-lang.org> | 2020-02-11 11:28:31 +0900 |
|---|---|---|
| committer | Nobuyoshi Nakada <nobu@ruby-lang.org> | 2020-02-12 15:05:29 +0900 |
| commit | 52cdf400efaecc0f5e1d1f70f22dc45212e03c4c (patch) | |
| tree | 162768d517e60c8bba893936bfce8b77ab55caca /variable.c | |
| parent | 921916ff9e2940f28d932af84c5b2a2e222219d0 (diff) | |
| download | ruby-52cdf400efaecc0f5e1d1f70f22dc45212e03c4c.tar.gz | |
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.
Diffstat (limited to 'variable.c')
| -rw-r--r-- | variable.c | 7 |
1 files changed, 5 insertions, 2 deletions
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(); } |