Bug #19966: Prism defines global method instead of singleton method

• Status: Closed
• Assignee: -
• Target version: -
• Backport: 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONTNEED

[nobu (Nobuyoshi Nakada)]

The receiver is ignored and compiled to definemethod instead of definesmethod.

$ ./ruby -v -e 'puts RubyVM::InstructionSequence.compile_prism("def a.foo;end").disasm'
ruby 3.3.0dev (2023-10-20T00:12:09Z master 985370406d) [arm64-darwin22]
== disasm: #<ISeq:<compiled>@<compiled>:0 (0,0)-(0,13)>
0000 definemethod                           :foo, foo
0003 putobject                              :foo
0005 leave

== disasm: #<ISeq:foo@<compiled>:0 (0,0)-(0,13)>
0000 putnil
0001 leave

$ ./ruby -v -e 'puts RubyVM::InstructionSequence.compile("def a.foo;end").disasm'
ruby 3.3.0dev (2023-10-20T00:12:09Z master 985370406d) [arm64-darwin22]
== disasm: #<ISeq:<compiled>@<compiled>:1 (1,0)-(1,13)>
0000 putself                                                          (   1)[Li]
0001 opt_send_without_block                 <calldata!mid:a, argc:0, FCALL|VCALL|ARGS_SIMPLE>
0003 definesmethod                          :foo, foo
0006 putobject                              :foo
0008 leave

== disasm: #<ISeq:foo@<compiled>:1 (1,0)-(1,13)>
0000 putnil                                                           (   1)[Ca]
0001 leave                                  [Re]

[nobu (Nobuyoshi Nakada)]

https://github.com/ruby/ruby/pull/8718

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset git|9d1940ba3c3bd08a8f2c630e51524186e350fdd5.

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[Bug #19966] [PRISM] Fix singleton method definition