Bug #10283: Calling define_method with a dynamic symbol ending in = results in a NoMethodError when calling the method via assignment, until called via send

• Status: Closed
• Assignee: -
• Target version: 2.2.0
• ruby -v: ruby 2.2.0preview1 (2014-09-17 trunk 47616) [i386-openbsd]
• Backport: 2.0.0: DONTNEED, 2.1: DONTNEED

[jeremyevans0 (Jeremy Evans)]

This raises a NoMethodError in ruby 2.2.0preview1:

ruby -e "class A; define_method('b='.to_sym){|v|}; end; A.new.b = 1"

This does not, showing it is specific to dynamic symbols:

ruby -e "class A; define_method(:b=){|v|}; end; A.new.b = 1"

This does not, showing it is specific to symbols ending in =:

ruby -e "class A; define_method('b'.to_sym){}; end; A.new.b"

This does not, showing it works when called via send:

ruby -e "class A; define_method('b='.to_sym){|v|}; end; A.new.send(:b=, 1)"

This does not, showing it works after calling send:

ruby -e "class A; define_method('b='.to_sym){|v|}; end; A.new.send(:b=, 1); A.new.b = 1"

I apologize if this is already fixed in trunk.

[nobu (Nobuyoshi Nakada)]

• Related to Bug #10266: String#to_sym generates too big object_id? added

[nobu (Nobuyoshi Nakada)]

• Related to deleted (Bug #10266: String#to_sym generates too big object_id?)

[nobu (Nobuyoshi Nakada)]

• Related to Bug #10259: send を使った attr_writer への書き込みができない場合がある added

[nobu (Nobuyoshi Nakada)]

• Description updated (diff)
• Status changed from Open to Closed
• Backport changed from 2.0.0: UNKNOWN, 2.1: UNKNOWN to 2.0.0: DONTNEED, 2.1: DONTNEED

[nobu (Nobuyoshi Nakada)]

• Has duplicate Bug #10299: alias_method :new_foo=, :"#{:foo}=" doesn't work properly on ruby 2.2.0preview1. added