Bug #14620
Updated by nobu (Nobuyoshi Nakada) about 6 years ago
The following code when executed on Ruby 2.5 causes a segfault on my machine (macOS High Sierra). This has been reproduced with a self-compiled Ruby as well as one from home-brew. ~~~ruby ~~~ def foo puts 'hi' end foo, true ~~~ The segfault produced is as follows: ~~~ /Users/sam/tmp/ruby.rb:5: Can't assign to true foo, true ^ /Users/sam/tmp/ruby.rb: [BUG] Segmentation fault at 0x0000000000000020 ruby 2.5.0p0 (2017-12-25 revision 61468) [x86_64-darwin17] -- Crash Report log information -------------------------------------------- See Crash Report log file under the one of following: * ~/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:001000 (none) [FINISH] -- Machine register context ------------------------------------------------ rax: 0x00007fee536988a0 rbx: 0x00007fee53698870 rcx: 0x000000000002a91b rdx: 0x0000000000000000 rdi: 0x00007fee536988a0 rsi: 0x000000000000291b rbp: 0x00007ffee7db3420 rsp: 0x00007ffee7db3400 r8: 0x0000000000000000 r9: 0x0000000000000040 r10: 0x00007fff94f88040 r11: 0xffffffffffffffff r12: 0x00007ffee7db4248 r13: 0x00007ffee7db486a r14: 0x0000000000000000 r15: 0x00007fee53698870 rip: 0x0000000107f09a44 rfl: 0x0000000000010202 -- C level backtrace information ------------------------------------------- 0 libruby.2.5.dylib 0x0000000107fb8553 rb_print_backtrace + 29 1 libruby.2.5.dylib 0x0000000107fb8636 rb_vm_bugreport + 120 2 libruby.2.5.dylib 0x0000000107ea58f7 rb_bug_context + 206 3 libruby.2.5.dylib 0x0000000107f55d73 sig_do_nothing + 0 4 libsystem_platform.dylib 0x00007fff5c1d3f5a _sigtramp + 26 5 libruby.2.5.dylib 0x0000000107f09a44 list_append_gen + 62 6 libruby.2.5.dylib 0x0000000107f025e4 ruby_yyparse + 7970 7 libruby.2.5.dylib 0x0000000107f0d130 yycompile0 + 592 8 libruby.2.5.dylib 0x0000000107fb9338 rb_suppress_tracing + 212 9 libruby.2.5.dylib 0x0000000107f0c51e rb_parser_compile_file_path + 109 10 libruby.2.5.dylib 0x0000000107f52759 load_file_internal + 989 11 libruby.2.5.dylib 0x0000000107eaba3b rb_ensure + 194 12 libruby.2.5.dylib 0x0000000107f51e1d ruby_process_options + 2329 13 libruby.2.5.dylib 0x0000000107eaaaa1 ruby_options + 191 14 ruby 0x0000000107e4bf33 main + 78 -- Other runtime information ----------------------------------------------- * Loaded script: /Users/sam/tmp/ruby.rb * Loaded features: 0 enumerator.so 1 thread.rb 2 rational.so 3 complex.so 4 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/x86_64-darwin17/enc/encdb.bundle 5 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/x86_64-darwin17/enc/trans/transdb.bundle 6 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/x86_64-darwin17/rbconfig.rb 7 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/rubygems/compatibility.rb 8 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/rubygems/defaults.rb 9 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/rubygems/deprecate.rb 10 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/rubygems/errors.rb 11 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/rubygems/version.rb 12 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/rubygems/requirement.rb 13 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/rubygems/platform.rb 14 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/rubygems/basic_specification.rb 15 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/rubygems/stub_specification.rb 16 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/rubygems/util/list.rb 17 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/x86_64-darwin17/stringio.bundle 18 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/uri/rfc2396_parser.rb 19 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/uri/rfc3986_parser.rb 20 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/uri/common.rb 21 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/uri/generic.rb 22 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/uri/ftp.rb 23 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/uri/http.rb 24 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/uri/https.rb 25 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/uri/ldap.rb 26 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/uri/ldaps.rb 27 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/uri/mailto.rb 28 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/uri.rb 29 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/rubygems/specification.rb 30 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/rubygems/exceptions.rb 31 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/rubygems/defaults/operating_system.rb 32 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/rubygems/dependency.rb 33 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/rubygems/core_ext/kernel_gem.rb 34 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/monitor.rb 35 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb 36 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/rubygems.rb 37 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/rubygems/path_support.rb 38 /usr/local/lib/ruby/gems/2.5.0/gems/did_you_mean-1.2.0/lib/did_you_mean/version.rb 39 /usr/local/lib/ruby/gems/2.5.0/gems/did_you_mean-1.2.0/lib/did_you_mean/core_ext/name_error.rb 40 /usr/local/lib/ruby/gems/2.5.0/gems/did_you_mean-1.2.0/lib/did_you_mean/levenshtein.rb 41 /usr/local/lib/ruby/gems/2.5.0/gems/did_you_mean-1.2.0/lib/did_you_mean/jaro_winkler.rb 42 /usr/local/lib/ruby/gems/2.5.0/gems/did_you_mean-1.2.0/lib/did_you_mean/spell_checker.rb 43 /usr/local/Cellar/ruby/2.5.0_2/lib/ruby/2.5.0/delegate.rb 44 /usr/local/lib/ruby/gems/2.5.0/gems/did_you_mean-1.2.0/lib/did_you_mean/spell_checkers/name_error_checkers/class_name_checker.rb 45 /usr/local/lib/ruby/gems/2.5.0/gems/did_you_mean-1.2.0/lib/did_you_mean/spell_checkers/name_error_checkers/variable_name_checker.rb 46 /usr/local/lib/ruby/gems/2.5.0/gems/did_you_mean-1.2.0/lib/did_you_mean/spell_checkers/name_error_checkers.rb 47 /usr/local/lib/ruby/gems/2.5.0/gems/did_you_mean-1.2.0/lib/did_you_mean/spell_checkers/method_name_checker.rb 48 /usr/local/lib/ruby/gems/2.5.0/gems/did_you_mean-1.2.0/lib/did_you_mean/spell_checkers/key_error_checker.rb 49 /usr/local/lib/ruby/gems/2.5.0/gems/did_you_mean-1.2.0/lib/did_you_mean/spell_checkers/null_checker.rb 50 /usr/local/lib/ruby/gems/2.5.0/gems/did_you_mean-1.2.0/lib/did_you_mean/formatters/plain_formatter.rb 51 /usr/local/lib/ruby/gems/2.5.0/gems/did_you_mean-1.2.0/lib/did_you_mean.rb [NOTE] You may have encountered a bug in the Ruby interpreter or extension libraries. Bug reports are welcome. For details: http://www.ruby-lang.org/bugreport.html [IMPORTANT] Don't forget to include the Crash Report log file under DiagnosticReports directory in bug reports. ~~~