Bug #19263: MJIT fails to compile multiple values in a single case in Ruby 3.2.0

• Status: Closed
• Assignee: -
• Target version: -
• Backport: 2.7: DONTNEED, 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONE

[k0kubun (Takashi Kokubun)]

$ cat test.rb
def test(a)
  case a
  when true, false
    a
  end
end

test(true)
test(true)

$ ruby --mjit-verbose=1 --mjit-wait --mjit-call-threshold=2 test.rb
/tmp/_ruby_mjit_p237606u1.c: In function ‘_mjit0’:
/tmp/_ruby_mjit_p237606u1.c:58:7: error: duplicate case value
   58 |       case 19:
      |       ^~~~
compilation terminated due to -Wfatal-errors.
Successful MJIT finish

I'd like to backport this fix https://github.com/ruby/ruby/commit/fc03ba50f1ff6c30f7c654f564b4dffbed0844ef to (only) ruby_3_2 branch.

[k0kubun (Takashi Kokubun)]

I've pushed the fix. Please backport https://github.com/ruby/ruby/commit/fc03ba50f1ff6c30f7c654f564b4dffbed0844ef to ruby_3_2 branch. Other older branches shouldn't need this patch.

[k0kubun (Takashi Kokubun)]

• Description updated (diff)

[k0kubun (Takashi Kokubun)]

• Status changed from Open to Closed

[naruse (Yui NARUSE)]

• Backport changed from 2.7: DONTNEED, 3.0: DONTNEED, 3.1: DONTNEED, 3.2: REQUIRED to 2.7: DONTNEED, 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONE

ruby_3_2 5c551ac59f9620901394a46dffda5a1833b9c4b0 merged revision(s) fc03ba50f1ff6c30f7c654f564b4dffbed0844ef.