[ruby-core:122152] [Ruby Bug#21345] crash on evaluating 'a=>a,*,'

16 May 2025


      Issue #21345 has been updated by ufuk (Ufuk Kayserilioglu).

Assignee set to prism

This is most probably a Prism bug, since it seems to work fine with `parse.y` as the parser:
```shell
$ ruby --parser parse.y -ve 'a=>a,*,'
ruby 3.4.4 (2025-05-14 revision a38531fd3f) [arm64-darwin24]
-e:1: syntax error, unexpected end-of-input
a=>a,*,
       ^
ruby: compile error (SyntaxError)

```
whereas:
```shell
$ ruby --parser prism -ve 'a=>a,*,'
ruby 3.4.4 (2025-05-14 revision a38531fd3f) +PRISM [arm64-darwin24]
-e: [BUG] Unexpected node type in pattern matching expression: PM_IMPLICIT_REST_NODE
ruby 3.4.4 (2025-05-14 revision a38531fd3f) +PRISM [arm64-darwin24]

-- Crash Report log information --------------------------------------------
   See Crash Report log file in one of the following locations:
     * ~/Library/Logs/DiagnosticReports
     * /Library/Logs/DiagnosticReports
   for more details.
Don't forget to include the above Crash Report log file in bug reports.

-- Control frame information -----------------------------------------------
c:0001 p:0000 s:0003 E:000840 DUMMY  [FINISH]


-- Threading information ---------------------------------------------------
Total ractor count: 1
Ruby thread count for this ractor: 1

-- C level backtrace information -------------------------------------------
/nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib(rb_vm_bugreport+0xb6c) [0x10515fd00]
/nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib(rb_bug_without_die_internal+0xfc) [0x104f81100]
/nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib(rb_bug+0x1c) [0x1052afbe4]
/nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib(pm_compile_pattern+0x31fc) [0x104f43d4c]
/nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib(pm_compile_pattern+0x2eac) [0x104f439fc]
/nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib(pm_compile_match_required_node+0x198) [0x104f43f00]
/nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib(pm_compile_node+0x1670) [0x104f11fa4]
/nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib(pm_compile_scope_node+0x1bc8) [0x104f47e3c]
/nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib(pm_iseq_compile_node+0x84) [0x104f10850]
/nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib(pm_iseq_new_with_opt_try+0x1c) [0x104fe97a0]
/nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib(rb_protect+0xc0) [0x104f8d974]
/nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib(pm_iseq_new_with_opt+0x14c) [0x104fe8acc]
/nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib(pm_iseq_new_main+0xc4) [0x104fe8d1c]
/nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib(ruby_process_options+0x179c) [0x1050adfd8]
/nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib(ruby_options+0x9c) [0x104f8c2c8]
/nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/bin/ruby(main+0x64) [0x1044bfec4]

-- Other runtime information -----------------------------------------------

* Loaded script: -e

* Loaded features:

    0 enumerator.so
    1 thread.rb
    2 fiber.so
    3 rational.so
    4 complex.so
    5 ruby2_keywords.rb
    6 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/arm64-darwin24/enc/encdb.bundle
    7 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/arm64-darwin24/enc/trans/transdb.bundle
    8 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/arm64-darwin24/rbconfig.rb
    9 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/rubygems/compatibility.rb
   10 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/rubygems/defaults.rb
   11 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/rubygems/deprecate.rb
   12 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/rubygems/errors.rb
   13 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/rubygems/target_rbconfig.rb
   14 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/rubygems/unknown_command_spell_checker.rb
   15 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/rubygems/exceptions.rb
   16 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/rubygems/basic_specification.rb
   17 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/rubygems/stub_specification.rb
   18 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/rubygems/platform.rb
   19 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/rubygems/specification_record.rb
   20 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/rubygems/util/list.rb
   21 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/rubygems/version.rb
   22 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/rubygems/requirement.rb
   23 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/rubygems/specification.rb
   24 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/rubygems/util.rb
   25 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/rubygems/dependency.rb
   26 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/rubygems/core_ext/kernel_gem.rb
   27 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/arm64-darwin24/monitor.bundle
   28 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/monitor.rb
   29 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/rubygems.rb
   30 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/bundled_gems.rb
   31 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/rubygems/path_support.rb
   32 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/error_highlight/version.rb
   33 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/error_highlight/base.rb
   34 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/error_highlight/formatter.rb
   35 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/error_highlight/core_ext.rb
   36 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/error_highlight.rb
   37 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/did_you_mean/version.rb
   38 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/did_you_mean/core_ext/name_error.rb
   39 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/did_you_mean/levenshtein.rb
   40 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/did_you_mean/jaro_winkler.rb
   41 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/did_you_mean/spell_checker.rb
   42 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/did_you_mean/spell_checkers/name_error_checkers/class_name_checker.rb
   43 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/did_you_mean/spell_checkers/name_error_checkers/variable_name_checker.rb
   44 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/did_you_mean/spell_checkers/name_error_checkers.rb
   45 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/did_you_mean/spell_checkers/method_name_checker.rb
   46 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/did_you_mean/spell_checkers/key_error_checker.rb
   47 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/did_you_mean/spell_checkers/null_checker.rb
   48 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/did_you_mean/tree_spell_checker.rb
   49 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/did_you_mean/spell_checkers/require_path_checker.rb
   50 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/did_you_mean/spell_checkers/pattern_key_name_checker.rb
   51 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/did_you_mean/formatter.rb
   52 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/did_you_mean.rb
   53 /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/ruby/3.4.0/syntax_suggest/core_ext.rb

* Process memory map:

1044bc000-1044c0000 r-x /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/bin/ruby
1044c0000-1044c4000 r-- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/bin/ruby
1044c4000-1044c8000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/bin/ruby
1044c8000-1044cc000 r-- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/bin/ruby
1044cc000-1044d4000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/bin/ruby
1044d4000-1044dc000 r-- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/bin/ruby
1044dc000-1044e0000 r-- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/bin/ruby
1044e0000-1044e4000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/bin/ruby
1044e4000-1044e8000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/bin/ruby
1044e8000-1044f0000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/bin/ruby
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1044f4000-1044f8000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/bin/ruby
1044f8000-104500000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/bin/ruby
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10e970000-116970000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
116970000-11e970000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11e970000-11e974000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11e974000-11ea18000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11ea18000-11ea1c000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11ea1c000-11eac0000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11eac0000-11eac4000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11eac4000-11eb68000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11eb68000-11eb6c000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11eb6c000-11ec10000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11ec10000-11ec14000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11ec14000-11ecb8000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11ecb8000-11ecbc000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11ecbc000-11ed60000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11ed60000-11ed64000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11ed64000-11ee08000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11ee08000-11ee0c000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11ee0c000-11eeb0000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11eeb0000-11eeb4000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11eeb4000-11ef58000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11ef58000-11ef5c000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11ef5c000-11f000000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f000000-11f004000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f004000-11f0a8000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f0a8000-11f0ac000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f0ac000-11f150000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f150000-11f154000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f154000-11f1f8000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f1f8000-11f1fc000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f1fc000-11f2a0000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f2a0000-11f2a4000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f2a4000-11f348000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f348000-11f34c000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f34c000-11f3f0000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f3f0000-11f3f4000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f3f4000-11f498000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f498000-11f49c000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f49c000-11f540000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f540000-11f544000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f544000-11f5e8000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f5e8000-11f5ec000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f5ec000-11f690000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f690000-11f694000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f694000-11f738000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f738000-11f73c000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f73c000-11f7e0000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f7e0000-11f7e4000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f7e4000-11f888000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f888000-11f88c000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f88c000-11f930000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f930000-11f934000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f934000-11f9d8000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f9d8000-11f9dc000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11f9dc000-11fa80000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11fa80000-11fa84000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11fa84000-11fb28000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11fb28000-11fb2c000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11fb2c000-11fbd0000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11fbd0000-11fbd4000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11fbd4000-11fc78000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11fc78000-11fc7c000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11fc7c000-11fd20000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11fd20000-11fd24000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11fd24000-11fdc8000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11fdc8000-11fdcc000 --- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11fdcc000-11fe70000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
11ff00000-120000000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
120000000-128000000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
128000000-128800000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
128800000-128900000 rw- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
128900000-128f8c000 r-- /nix/store/x60hhxmn5cmwxqbmmnlxpjykfjmwy0v7-ruby-3.4.4/lib/libruby.3.4.dylib
129000000-129800000 rw-
12de00000-12df00000 rw-
12df00000-12e000000 rw-
12e000000-12e800000 rw-
12e800000-12f000000 rw-
12f000000-12f800000 rw-
12f800000-12f900000 rw-
130000000-138000000 rw-
138000000-140000000 rw-
140000000-148000000 rw-
167944000-16b148000 ---
16b148000-16b944000 rw-
16b944000-16b948000 ---
16b948000-16b9d0000 rw-
180000000-1fc000000 r--
1fc000000-1fcbe4000 r--
1fcbe4000-1fcc04000 rw-
1fcc04000-1fcc08000 r--
1fcc08000-1fe000000 rw-
1fe000000-1ff2b0000 r--
1ff2b0000-1ff2d4000 r--
1ff2d4000-2004e8000 rw-
2004e8000-208218000 r--
208218000-20a000000 r--
20a000000-290000000 r--
290000000-290e50000 rw-
290e50000-291ba4000 rw-
291ba4000-29608c000 r--
29608c000-298000000 r--
298000000-300000000 r--
fc0000000-1000000000 ---
1000000000-7000000000 ---
600000000000-600020000000 rw-
[IMPORTANT]
Don't forget to include the Crash Report log file under
DiagnosticReports directory in bug reports.

```

----------------------------------------
Bug #21345: crash on evaluating 'a=>a,*,'
https://bugs.ruby-lang.org/issues/21345#change-113302

* Author: masterleep2 (Bill Lipa)
* Status: Open
* Assignee: prism
* ruby -v: ruby 3.4.3 (2025-04-14 revision d0b7e5b6a0) +PRISM [arm64-darwin24]
* Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN
----------------------------------------
```
ruby -e 'a=>a,*,'

-e: [BUG] Unexpected node type in pattern matching expression: PM_IMPLICIT_REST_NODE
ruby 3.4.3 (2025-04-14 revision d0b7e5b6a0) +PRISM [arm64-darwin24]

-- Crash Report log information --------------------------------------------
   See Crash Report log file in one of the following locations:             
     * ~/Library/Logs/DiagnosticReports                                     
     * /Library/Logs/DiagnosticReports                                      
   for more details.                                                        
Don't forget to include the above Crash Report log file in bug reports.     

-- Control frame information -----------------------------------------------
c:0001 p:0000 s:0003 E:0001f0 DUMMY  [FINISH]


-- Threading information ---------------------------------------------------
Total ractor count: 1
Ruby thread count for this ractor: 1

-- C level backtrace information -------------------------------------------
/opt/local/lib/libruby.3.4.dylib(rb_vm_bugreport+0xb6c) [0x104cbcfdc]
/opt/local/lib/libruby.3.4.dylib(rb_bug_without_die_internal+0xfc) [0x104afa12c]
/opt/local/lib/libruby.3.4.dylib(rb_bug+0x1c) [0x104e07970]
/opt/local/lib/libruby.3.4.dylib(pm_compile_pattern.cold.2+0x0) [0x104e0750c]
/opt/local/lib/libruby.3.4.dylib(pm_compile_pattern+0x42a8) [0x104abd78c]
/opt/local/lib/libruby.3.4.dylib(pm_compile_pattern+0x3f90) [0x104abd474]
/opt/local/lib/libruby.3.4.dylib(pm_compile_match_required_node+0x3b4) [0x104abdb54]
/opt/local/lib/libruby.3.4.dylib(pm_compile_node+0x1670) [0x104a8659c]
/opt/local/lib/libruby.3.4.dylib(pm_compile_scope_node+0x1c34) [0x104ac2018]
/opt/local/lib/libruby.3.4.dylib(pm_iseq_compile_node+0x84) [0x104a84e60]
/opt/local/lib/libruby.3.4.dylib(pm_iseq_new_with_opt_try+0x1c) [0x104b5cbc8]
/opt/local/lib/libruby.3.4.dylib(rb_protect+0xbc) [0x104b060cc]
/opt/local/lib/libruby.3.4.dylib(pm_iseq_new_with_opt+0x14c) [0x104b5c034]
/opt/local/lib/libruby.3.4.dylib(pm_iseq_new_main+0xc4) [0x104b5c23c]
/opt/local/lib/libruby.3.4.dylib(ruby_process_options+0x16a4) [0x104c12a30]
/opt/local/lib/libruby.3.4.dylib(ruby_options+0xb0) [0x104b04b04]
/opt/local/bin/ruby3.4(main+0x64) [0x1041eff20]

```

---Files--------------------------------
crash.txt (14.1 KB)


-- 
https://bugs.ruby-lang.org/