Bug #4803: RCLASS_SUPER won't compile for C extensions as of revision 31627

• Status: Closed
• Priority: Normal
• Assignee: nobu (Nobuyoshi Nakada)
• Target version: -
• ruby -v: -

[dazuma (Daniel Azuma)]

The RCLASS_SUPER macro (defined in ruby.h) no longer compiles for C extensions because the required rb_classext_t type has been made opaque as of svn revision 31627. This is breaking certain gems that rely on RCLASS_SUPER to hack the class tree, such as blockenspiel and mixology.

[dazuma (Daniel Azuma)]

Can anyone explain to me the rationale behind moving the rb_classext_t definition into internal.h, and what I should do in 1.9.3 to access the functionality of RCLASS_SUPER? I need to access and set the direct superclass, even if it's a T_ICLASS, so calling rb_class_superclass() is not sufficient. Thanks!

[matz (Yukihiro Matsumoto)]

• ruby -v changed from ruby 1.9.3dev (2011-05-30 trunk 31805) [x86_64-darwin10.7.4] to -

Hi,

In message "Re: [ruby-core:36566] [Ruby 1.9 - Bug #4803] RCLASS_SUPER won't compile for C extensions as of revision 31627"
on Mon, 30 May 2011 14:53:13 +0900, Daniel Azuma [e-mail] writes:
|
|Can anyone explain to me the rationale behind moving the rb_classext_t definition into internal.h, and what I should do in 1.9.3 to access the functionality of RCLASS_SUPER? I need to access and set the direct superclass, even if it's a T_ICLASS, so calling rb_class_superclass() is not sufficient. Thanks!

I think Nobu considered rb_classext_t should not be disclosed to
extensions, but since some extensions already use it, it might be
better to make it public anyway.

						matz.

[matz (Yukihiro Matsumoto)]

• Status changed from Open to Assigned
• Assignee set to nobu (Nobuyoshi Nakada)

[rogerdpack (Roger Pack)]

just ran into this, as well

https://gist.github.com/1006162

If there's a work around do let us know :)

-roger-

[nobu (Nobuyoshi Nakada)]

Hi,

At Sat, 4 Jun 2011 01:33:38 +0900,
Roger Pack wrote in [ruby-core:36721]:

just ran into this, as well

https://gist.github.com/1006162

If there's a work around do let us know :)

rb_class_superclass() since 1.4.0.

--
Nobu Nakada

[nobu (Nobuyoshi Nakada)]

Hi,

At Mon, 6 Jun 2011 23:47:57 +0900,
Roger Pack wrote in [ruby-core:36791]:

rb_class_superclass() since 1.4.0.

Appears it has become public with 1.9.3?

Sure, it had been static, sorry.

So you can use it if available, RCLASS_SUPER() if defined, or
the member directly.

--
Nobu Nakada

[nobu (Nobuyoshi Nakada)]

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

This issue was solved with changeset r32162.
Daniel, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

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• include/ruby/backward/classext.h: for evil gems. fixed #4803