diff options
| -rw-r--r-- | test/ruby/test_variable.rb | 6 | ||||
| -rw-r--r-- | vm_insnhelper.c | 5 |
2 files changed, 11 insertions, 0 deletions
diff --git a/test/ruby/test_variable.rb b/test/ruby/test_variable.rb index f8a7c68fd3..9acba39f40 100644 --- a/test/ruby/test_variable.rb +++ b/test/ruby/test_variable.rb @@ -261,6 +261,12 @@ class TestVariable < Test::Unit::TestCase v.instance_variable_set(:@foo, :bar) end + assert_raise_with_message(FrozenError, msg, "[Bug #19339]") do + v.instance_eval do + @a = 1 + end + end + assert_nil EnvUtil.suppress_warning {v.instance_variable_get(:@foo)} assert_not_send([v, :instance_variable_defined?, :@foo]) diff --git a/vm_insnhelper.c b/vm_insnhelper.c index 9c2947523c..29753f1800 100644 --- a/vm_insnhelper.c +++ b/vm_insnhelper.c @@ -1562,6 +1562,11 @@ vm_getinstancevariable(const rb_iseq_t *iseq, VALUE obj, ID id, IVC ic) static inline void vm_setinstancevariable(const rb_iseq_t *iseq, VALUE obj, ID id, VALUE val, IVC ic) { + if (RB_SPECIAL_CONST_P(obj)) { + rb_error_frozen_object(obj); + return; + } + shape_id_t dest_shape_id; attr_index_t index; vm_ic_atomic_shape_and_index(ic, &dest_shape_id, &index); |