Backport #8540: Ruby crashes when sending "attr="

• Status: Closed
• Assignee: nagachika (Tomoyuki Chikanaga)

[woodbridge (Justin Woodbridge)]

Ruby crashes when trying to run: obj.send "attr=" where attr= is a method defined by attr_accessor. Only happens when no argument is provided.

Expected: wrong number of arguments (0 for 1) (ArgumentError)
Actual: crashes

Code sample and crash logs: https://gist.github.com/woodbridge/5805212 .

Ruby Versions: 2.0.0-p0, 2.0.0-p195, and rev 4ff3b.
Systems: Mac OS X 10.8.2 (x86_64)

• Assignee set to Anonymous

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

Fixed in r41389, accidentally omitted the bug number from the commit message.

[nagachika (Tomoyuki Chikanaga)]

• Tracker changed from Bug to Backport
• Project changed from Ruby master to Backport200
• Status changed from Closed to Assigned
• Assignee changed from Anonymous to nagachika (Tomoyuki Chikanaga)

[nagachika (Tomoyuki Chikanaga)]

• Status changed from Assigned to Closed

This issue was solved with changeset r41395.
Justin, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

merge revision(s) 41389: [Backport #8540]

* vm_insnhelper.c (vm_call_method): ensure methods of type
  VM_METHOD_TYPE_ATTR_SET are called with 1 argument

* test/ruby/test_module.rb (class TestModule): add test
[ruby-core:55543] [Bug #8540]