Backport #3896: Bus error in ObjectSpace.count_objects_size

• Status: Closed
• Assignee: yugui (Yuki Sonoda)

[eitoball (Eito Katagiri)]

=begin
Hello,

ObjectSpace.count_objects_size causes a bus error in ruby-1.9.2.

ruby -robjspace -ve "ObjectSpace.count_objects_size"
ruby 1.9.2p7 (2010-09-29 revision 29373) [i386-darwin9.8.0]
-e:1: [BUG] Bus Error

The following patch should solve this issue.

diff --git a/gc.c b/gc.c
index 25fcc3d..564d260 100644
--- a/gc.c
+++ b/gc.c
@@ -1145,7 +1145,7 @@ rb_data_typed_object_alloc(VALUE klass, void *datap, const
size_t
rb_objspace_data_type_memsize(VALUE obj)
{

• if (RTYPEDDATA_P(obj)) {

• if (RTYPEDDATA_P(obj) && RTYPEDDATA_TYPE(obj)->dsize) {
  return RTYPEDDATA_TYPE(obj)->dsize(RTYPEDDATA_DATA(obj));
  }
  else {

The trunk version does not have this issue because it checks the existence of dsize function pointer.
=end

[nobu (Nobuyoshi Nakada)]

• Category set to core
• Status changed from Open to Assigned
• Assignee set to yugui (Yuki Sonoda)

=begin
It's a part of r28986.
=end

[yugui (Yuki Sonoda)]

• Status changed from Assigned to Closed
• % Done changed from 0 to 100

=begin
This issue was solved with changeset r29570.
Eito, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

=end