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(342 matched)
342 Tagged Open Ruby Bugs as of 2023-03-17 05:42:54 +0900
Bug ID Tags Subject
19532 patch encoding Handling of 6-byte codepoints in left_adjust_char_head in CESU-8 encoding is broken
19531 patch core ObjectSpace::WeakMap: replaced values still clear the key they were assigned to
19485 patch doc Unexpected behavior in squiggly heredocs
19479 lib Support IPv4-mapped IPv6 addresses in IPAddr#private?
19473 maybenotbug thread can't be called from trap context (ThreadError) is too limiting
19470 perf notbug Frequent small range-reads from and then writes to a large array are very slow
19455 regexp Ruby 3.2: wrong Regexp encoding with non-ASCII comments
19441 maybenotbug lib Closing an Tempfile#dup behaviour
19438 perf Ruby 2.7 -> 3.2 Performance Regression in so_k_nucleotide benchmark
19436 core Call Cache for singleton methods can lead to "memory leaks"
19427 patch core Marshal.load(source, freeze: true) doesn't freeze in some cases
19417 patch regexp doc Regexp \p{Word} and [[:word:]] do not match Unicode Other_Number character
19416 patch core Inconsistent behaviour for Struct.new without any member_names
19413 core Can't move object when 2 ivars refer to same object
19412 ext Socket starts queueing and not responding after a certain amount of requests
19411 core GC issue with moved objects
19410 ractor If move from ractor fails with error, some objects are left in broken state
19409 ractor Object's shape is reset after a ractor move
19408 ractor Object no longer frozen after moved from a ractor
19407 ractor 2 threads taking from current ractor will hang forever
19401 lib doc [Doc] Broken links in CSV documentation
19394 patch core cvars in instance of cloned class point to source class's cvars even after class_variable_set on clone
19387 patch ractor Issue with ObjectSpace.each_objects not returning objects after starting a ractor
19386 ext os/arch `test_hmac.rb` of openssl is timeout on RHEL9
19384 win encoding ASCII 128..154 characters in IO.popen or %x output do not reflect the proper encoding in Windows
19383 patch win encoding Time.now.zone encoding for German display language in Windows is incorrect
19380 patch core IO.read doesn't validate the offset argument
19378 patch core win Windows: Use less syscalls for faster require of big gems
19375 ractor File objects are currently shareable, as are other extension objects that shouldn't be.
19374 patch ractor Issue with Ractor.make_shareable with curried procs
19372 patch ractor Proc objects are not traversed for shareable check during Ractor.make_shareable(prok)
19369 patch ractor Small corner-case issue that breaks Ractor isolation: change cloned object from another thread
19368 ractor Small issue with isolated procs and eval
19367 patch ractor Issue with ractor local storage API
19365 ractor Ractors can access non-shareable values through enumerators
19364 ractor tracepoint Issue with tracepoint enable/disable across ractors
19363 coverage Fix rb_transient_heap_mark: wrong header (T_STRUCT) segfault
19362 core maybenotbug #dup on Proc doesn't call initialize_dup
19352 notbug Feature #17391 was not such a good idea because now Ruby 3.2 can not install Rails v5 or v6 if they use webpacker.
19349 core Kernel.Integer silently discards base argument that does not have a #to_int
19338 ractor Ruby hangs when ouputting warnings inside ractor with VM lock held
19334 perf notbug Defining many instance variables and accessing them is slow in Ruby 3.2.0
19313 test os/arch Leaked file descriptors while running test-all
19297 test Don't download content from internet to execute Ruby test suite
19294 core maybenotbug Enumerator.product works incorrectly with consuming enumerators
19293 core maybenotbug The new Time.new(String) API is nice... but we still need a stricter version of this
19288 ractor perf Ractor JSON parsing significantly slower than linear parsing
19287 lib Let DelegateClass respect the original method's arity in case of 0
19281 parser SyntaxError if first argument of command call has semicolon inside parenthesis
19268 build win Mingw64 Build Failure
19266 lib URI::Generic should use URI::RFC3986_PARSER instead of URI::DEFAULT_PARSER
19251 test Limit amount of test failures due to updates of tzdata
19246 perf maybenotbug Rebuilding the loaded feature index much slower in Ruby 3.1
19244 patch core win Windows: USERPROFILE should be preferred over HOMEPATH
19238 lib notbug URI.open fails for file path when second argument is a hash
19231 core Integer#step and Float::INFINITY - inconsistent behaviour when called with and without a block
19230 ext The openssl backend of securerandom is no longer needed
19192 core win IO has third data mode, document is incomplete.
19175 ext Ripper does not recognize some pattern matching defining local variable
19172 core `ruby_thread_has_gvl_p` is innacurate sometimes -- document or change?
19168 notbug "such file" is bad grammar
19165 perf Method (with no param) delegation with *, **, and ... is slow
19160 core cmp_clamp arguments
19157 lib URI bad component validation can be tricked
19154 ractor Specify require and autoload guarantees in ractors
19147 core `TestFileExhaustive#test_expand_path_for_existent_username` and `TestDir#test_home` fails on i686
19126 maybenotbug build clang: Cannot compile with Control Flow Integrity (CFI)
19114 tracepoint Calling TracePoint#enable multiple times causes TracePoint to be activated multiple times
19113 core patch Inconsistency in retention of compare_by_identity flag in Hash methods
19112 ractor tracepoint Ractor garbage collection breaks/disables all active tracepoints
19084 core Using `IO::Buffer` to change an extended String affects other Strings sharing the same buffer
19048 build win Install of Ruby 3.1.x fails on Ubuntu 20.04 running on WSL
19044 win build Attempting to compile a static ruby 3.1 fails with MinGW
19043 ext Segfault on macOS 11.7 while using StringScanner in multiple threads
19039 core Closing an IO being select'ed in another thread does not resume the thread
19025 ext Ripper cannot parse syntax ok code that has numbered parameters
19017 patch lib Net::HTTP may block when attempting to reuse a persistent connection
19012 patch ext maybenotbug BasicSocket#recv* methods return an empty packet instead of nil on closed connections
19007 encoding Unicode tables differences from Unicode.org 14.0 data
19005 Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
18995 core IO#set_encoding sometimes set an IO's internal encoding to the default external encoding
18993 core Inconsistent Range#size for Float and Rational
18988 ext Ripper cannot parse some code that has regexp named capture
18966 parser Strange behavior when numbered parameters and method definition are both used in a block
18947 win core Unexpected Errno::ENAMETOOLONG on Windows
18940 ractor Ruby Ractor fails with IOError when handling higher concurrency
18933 ractor maybenotbug Dir.tmpdir implemented in non-Ractor-safe manner
18924 win lstrlen and lstrcat still in use
18923 win Dir.glob Errno::ENAMETOOLONG - Caused by outdated logic in open_dir_handle (win32.c)
18919 ractor notbug Ractor: can't share #Method objects
18918 build Can't compile ruby master with AFL ASAN
18914 test os/arch Segmentation fault during Ruby test suite execution
18903 core Stack overflow signal handling seems to be triggered once and then not working after
18886 tracepoint maybenotbug Struct aref and aset don't trigger any tracepoints.
18878 parser parse.y: Foo::Bar {} is inconsistently rejected
18842 lib Ruby's Resolv library does not handle correctly the `NODATA` case
18818 fiber SEGV (Fiber scheduler?)
18810 maybenotbug core Make `Kernel#p` interruptable.
18805 core IO::Buffer is inconsistent when returning a string from an empty buffer
18804 core Invalid line number for putnil instruction
18795 core Verbose GC debug output with -DRGENGC_DEBUG=5 causes a crash
18794 win Windows - intermittent SEGV TestObjSpace#test_reachable_objects_during_iteration
18789 test make test-bundled-gems failed after make install
18784 patch lib maybenotbug `FileUtils.rm_f` and `FileUtils.rm_rf` should not mask exceptions
18783 patch lib OptionParser should recognize "-" as an optional argument
18743 fiber Enumerator#next / peek re-use each others stacktraces
18740 tracepoint Use of rightward assignment changes line number needed for line-targeted TracePoint
18738 lib IRB can't recognize heredoc after words
18737 notbug Windows 'require' is case independent
18733 os/arch Ruby GC problems cause performance issue with Ractor
18686 regexp Regexp supporting unexpected age properties in Ruby < 3.2
18678 notbug Crash on Mac - vm_call0_cfunc_with_frame
18677 ext BigDecimal#power (**) returns FloatDomainError when passing an infinite parameter
18674 win build Build failure `make up` with WSL2
18661 win core Net::HTTP behavior changed between 2.6 and 3.1 on windows.
18651 encoding oob access in CP51932 -> CP50220 transcoder
18622 maybenotbug core const_get still looks in Object, while lexical constant lookup no longer does
18616 build notbug Error with clang(1) on MacOS due to __declspec()
18608 build `require': cannot load such file -- ripper (LoadError) after `make distclean`
18605 win core Fails to run on (newer) 32bit Windows with ucrt
18601 encoding Invalid byte sequences in Big5 encodings
18572 perf refine Performance regression when invoking refined methods
18553 core Memory leak on compiling method call with kwargs
18510 win core Unexpected waiting for console when starting ruby on windows
18507 os/arch build Incorrect target_os detection in configure script
18506 build make and make install rebuild items every time unnecessarily - sometimes causing races in parallel installs
18492 win core `rb_rescue2` inside `rb_protect` segfaults on Windows
18476 core Call to require stuck forever after receiving EAGAIN on writev when running with zeus
18473 os/arch ext Raw data in Socket::Option#inspect on Amazon Linux 2
18472 win ext rb_w32_map_errno is not found on Ruby-3.1.0
18457 win ext ruby 2.7.5 fiddle/types.rb use uint32_t but fiddle/cparser.rb lacks uint32_t
18456 lib rdoc non-determinism: module includes can be added once or twice to generated .ri
18455 core perf `IO#close` has poor performance and difficult to understand semantics.
18454 perf yjit YJIT slowing down key Discourse benchmarks
18444 os/arch core Trapped TSTP causes a locking deadlock in 3.0.3 onward
18429 os/arch build Configure ruby-3.0.3 on Solaris 10 Unknown keyword 'URL' in './ruby.tmp.pc'
18413 build os/arch Segfault in `ripper/lexer.rb`
18412 ractor Segfault in test_ractor.rb
18396 parser An unexpected "hash value omission" syntax error when without parentheses call expr follows
18393 os/arch test ext TestReadline#test_interrupt_in_other_thread fails on armv7hl
18381 notbug Default vs Bundled gems
18379 win test [CI] Windows mingw/ucrt - test-all timeout failures
18359 win [Windows MinGW] warning Please include winsock2.h before windows.h
18338 encoding Encoding.default_external = Encoding::UTF_16BE may add a wrongly-encoded string to $LOADED_FEATURES
18337 parser encoding Ruby allows zero-width characters in identifiers
18286 os/arch Universal arm64/x86_84 binary built on an x86_64 machine segfaults/is killed on arm64
18269 core trace_opt_not and trace_opt_regexpmatch2 insns are indistinguishable
18258 ractor maybenotbug Ractor.shareable? can be slow and mutates internal object flags.
18257 os/arch core rb_mRubyVMFrozenCore is broken by GC run
18255 core ioctl zeroes the last buffer byte
18186 win SEGV with system command - MinGW?
18152 core Fix theoretical bug with signals + qsort
18144 core Timeout not working while regular expression match is running
18132 thread TODO: fix ccan/list thread safety
18131 os/arch addr2line.c: Some inlined functions mistakenly shown
18129 ractor Ractor-incompatible global variables can be accessed through alias
18119 ractor Ractor crashes when instantiating classes
18080 parser Syntax error on one-line pattern matching
18073 build os/arch test/ruby/test_jit.rb: "error: invalid use of '__builtin_va_arg_pack ()'" on Ruby 2.7.4 on gcc 4.8.5
18061 os/arch Execshield test: libruby.so.N.N.N: FAIL: property-note test because no .note.gnu.property section found
18036 fiber Pthread fibers become invalid on fork - different from normal fibers.
18024 ractor Ractor crashes when connections are closed in multiple Ractors
18013 regexp Unexpected results when mxiing negated character classes and case-folding
18012 regexp Case-insensitive character classes can only match multiple code points when top-level character class is not negated
18010 regexp Character class with single character gets case-folded with following string
18009 regexp Regexps \w and \W with /i option and /u option produce inconsistent results under nested negation and intersection
18002 test os/arch s390x: Tests failing without LC_ALL env
17999 test os/arch TestMethod#test_zsuper intermittent timeout error on raspbian10-aarch64 CI
17998 ractor ractor: process hanging (with ractors initialized, but not being used)
17996 cygwin core Cygwin: thread + pipe behavior since Ruby 2.6
17990 regexp Inconsistent behavior of Regexp quantifiers over characters with complex case foldings
17989 regexp Case insensitive Regexps do not handle characters with overlapping case foldings
17931 build win Compile fails setup option nodynamic
17926 os/arch spec/ruby/core/file/atime_spec.rb: a random failing test on Travis ppc64le
17925 parser Pattern matching syntax using semicolon one-line
17882 ractor cygwin bootstraptest/test_ractor.rb:224 segfaults on Cygwin
17878 ractor bootstraptest/test_ractor.rb:224 a random failing test with "The outgoing-port is already closed (Ractor::ClosedError)"
17826 ractor Ractor#take hangs if used in multiple Threads
17817 mjit --jit outputs ./tmp/_ruby_mjit_*.h: No such file or directory on with TMP
17799 core Seg fault in rb_class_clear_method_cache
17792 core os/arch make notes and make test fail with Ruby3.0.1p64 RaspberryPI 4B Ubuntu 20.10 ARM64
17774 regexp Quantified empty group causes regex to fail
17722 ractor define_method with shareable results in "defined in a different Ractor"
17680 lib maybenotbug tab completion no longer works on irb3.0
17679 ractor Ractor incoming channel can consume unlimited resources
17678 ractor Ractors do not restart after fork
17677 ractor Ractor crashes fork when blocking
17676 ractor Accessing ENV from Ractor raises IsolationError
17667 ractor Module#name needs synchronization
17664 fiber maybenotbug Behavior of sockets changed in Ruby 3.0 to non-blocking
17646 patch build Check for `__builtin_mul_overflow` with `long long` arguments
17624 ractor Ractor.receive is not thread-safe
17617 ractor When a Ractor's incoming port is closed, Ractor.receive_if does not raise Ractor::ClosedError, but instead blocks indefinitely
17578 lib mkmf experimental C++ Support
17543 ractor Ractor isolation broken by `self` in shareable proc
17531 ractor `did_you_mean` not Ractor friendly
17516 ractor forking in a ractor causes Ruby to crash
17513 ractor Methods of shareable objects and UnboundMethods should be shareable
17506 ractor Ractor isolation broken by ThreadGroup
17478 perf Ruby3.0 is slower than Ruby2.7.2 when parsing a large CSV file
17420 ractor Unsafe mutation of $" when doing non-RubyGems require in Ractor
17400 encoding Incorrect character downcase for Greek Sigma
17383 perf 3.0 recursion memory|speed issues
17373 perf Ruby 3.0 is slower at Discourse bench than Ruby 2.7
17359 ractor Ractor copy mode is not Ractor-safe
17354 core Module#const_source_location is misleading for constants awaiting autoload
17337 build notbug Don't embed Ruby build-time configuration in Ruby
17289 core Time#strftime occurs Segmentation Fault on ruby-2.7.2p137
17263 fiber perf Fiber context switch degrades with number of fibers, limit on number of fibers
17196 ractor Segmentation Fault with Socket#close in Ractors
17180 ractor Ractor and constant referencing
17159 ractor extend `define_method` for Ractor
17146 maybenotbug core Queue operations are allowed after it is frozen
17142 build os/arch Ruby fails to build in AIX
17037 core rounding of Rational#to_f
16997 core win IO#gets converts some \r\n to \n with universal_newline: false
16959 maybenotbug core Weakmap has specs and third-party usage despite being a private API
16951 lib Consistently referer dependencies
16927 encoding String#tr won't return the expected result for some sign with diacritics
16920 os/arch thread TestThread#test_signal_at_join fails on aarch64
16905 build os/arch Ruby required to build Ruby on Haiku?
16829 maybenotbug fiber Exceptions raised from within an enumerated method lose part of their stacktrace
16820 notbug LEGAL is out of sync
16819 core Line reporting off by one when reporting line of a hash?
16810 os/arch ruby segfaults on s390x with musl libc
16776 coverage Regression in coverage library
16497 ext encoding StringIO#internal_encoding is broken (more severely in 2.7)
16493 thread os/arch TestThreadQueue#test_thr_kill is flaky on AArch64
16492 test os/arch TestBugReporter#test_bug_reporter_add test failures
16288 patch core Segmentation fault with finalizers, threads
16265 win thread Test (spec) failure using current MSYS2 tools, related to -fstack-protector and possibly D_FORTIFY_SOURCE=2
16185 os/arch notbug basictest failure on AIX 6.1 for 64bit build
16158 regexp notbug "st" Character Sequence In Regex Look-Behind Causes Illegal Pattern Error When Combined With POSIX Bracket Expressions And Case Insensitivity Flag
16145 regexp regexp match error if mixing /i, character classes, and utf8
15993 win encoding 'require' doesn't work if there are Cyrillic chars in the path to Ruby dir
15764 parser Whitespace and control characters should not be permitted in tokens
15599 core autoload Mixing autoload and require causes deadlock and incomplete definition.
15598 core autoload Deadlock on mutual reference of autoloaded constants
15550 win Windows - gem bin files - can't run from bash shell
15499 thread Breaking behavior on ruby 2.6: rb_thread_call_without_gvl doesn't invoke unblock_function when used on the main thread
15438 win thread Threads can't switch faster than TIME_QUANTUM_(NSEC|USEC|MSEC)
15428 core maybenotbug Refactor Proc#>> and #<<
15423 core os/arch fork leapfrog leaks memory on FreeBSD 11.2
15386 patch core [PATCH] io.c (rb_io_check_char_readable): do not io_fflush buffered sockets
15367 core IO.select is not resumed when io-object gets closed
15334 test cygwin child_info_fork::abort: address space needed by 'emoji_iso2022_kddi.so' on cygwin
15315 patch core ec_switch can still lose interrupts
15310 patch thread [PATCH] thread_pthread.c: close race from UBF_TIMER and non-GVL-releasing thread
15263 patch core [PATCH] vm_trace.c (postponed_job_register): only hit main thread
15247 win test Windows - TEMP folder, non 8.3 & drive, fails & errors in test-all (ruby & rdoc)
15097 cygwin lib Gem install fails on Ruby 2.5.1 with Cygwin (get_dns_server_list undefined)
14971 cygwin build error: implicit declaration of function ‘rb_vm_call0
14957 win thread MinGW, gcc 8.2.0, bootstraptest test_thread.rb - failure ?
14906 win core MinGW failure - TestIO#test_copy_stream_no_busy_wait
14838 regexp notbug RegexpError with double "s" in look-behind assertion in case-insensitive unicode regexp
14826 os/arch build make: *** [.ext/include/sparc-solaris2.10/rb_mjit_min_header-2.6.0.h] Error 1 on Solaris 10 with very old gcc3
14761 os/arch thread TestThread#test_join_limits hangs up on Solaris 10 with gcc
14727 win thread TestQueue#test_queue_with_trap always timeout on Windows10
14681 core `syswrite': stream closed in another thread (IOError)
14679 lib StdLib gems should properly specify their dependencies
14640 win core [win32] File.realpath treats a relative path with a drive letter as an absolute path.
14607 patch core Fix use of the rb_profile_frames start parameter
14582 patch tracepoint Unable to use `method__entry` and `method_return` tracing probes since 2.5
14543 build `make commit` show error of `common-srcs`
14480 os/arch build miniruby crashing when compiled with -O2 or -O1 on aarch64
14474 test skip "TestException#test_thread_signal_location" as known bug
14422 build Ruby configuration options should not be reused for gem builds
14418 regexp perf ruby 2.5 slow regexp execution
14387 core os/arch Ruby 2.5 を Alpine Linux で実行すると比較的浅めで SystemStackError 例外になる
14364 core Regexp last match variable in procs
14090 core `TestGc#test_interrupt_in_finalizer` fails very rarely
14064 test test-all with and without -j - incorrect assertions and missing test methods
14049 win core SEGV svn 60401 require_relative
13999 cygwin ext Cygwin 環境で ripper_state_lex.rb がコアダンプする
13671 regexp Regexp with lookbehind and case-insensitivity raises RegexpError only on strings with certain characters
13644 win test Windows - Setting Time.now
13571 win encoding Script arguments, encoding, windows / MinGW
13542 win test MinGW trunk Builds - Summary of Issues
13513 patch lib Resolv::DNS::Message.decode hangs after detecting truncation in UDP messages
13500 win test MinGW TestArity#test_proc_err_mess stops testing
13269 win test test/readline/test_readline.rb and mingw
13164 core A second `SystemStackError` exception results in `Segmentation fault (core dumped)`
13151 win core File.writable? doesn't report correctly if a directory is writable on Windows.
12725 cygwin build Trying to use ./miniruby before it exists
12689 core Thread isolation of $~ and $_
12582 ext OpenSSL Authenticated Encryption should check for tag length
12506 cygwin On cygwin, Feature #5994 does not work
12500 test os/arch TestProcess#test_aspawn_too_long_path fails on mips with "argument too big"
12473 test os/arch Test failure on fedora with TestTimeExtension#test_huge_precision
12445 cygwin thread Testing TestIO#test_open_fifo_does_not_block_other_threads results in deadlock on cygwin
12444 cygwin core Segmentation fault when running TestException#test_machine_stackoverflow on cygwin
12442 cygwin core TestArgf#test_textmode fails on cygwin
12280 win core IO.copy_stream(IO, IO) fails with "pread() not implemented"
12179 build Build failure due to VPATH expansion
12040 win core [Win32] File.stat fails on a mounted volume
11840 cygwin test Error with "make check" on Cygwin
11808 core Different behavior between Enumerable#grep and Array#grep
11704 refine maybenotbug Refinements only get "used" once in loop
11582 core os/arch maybenotbug On Solaris, Rational#** returns -Infinity for Rational(0) when passed a negative Float
11531 lib maybenotbug IPAddr#== implements wrong logic
11526 patch lib Streaming HTTP requests are not idempotent and should not be retried
11514 core os/arch AIX6.1 - Ruby 2.2.3 - Segmentation fault in :byteslice
11438 win thread native_thread_init_stack() get machine.stack_start unequal to thread's stack start address, x86 win32
11269 core ruby_init_setproctitle() should be called before require_libraries()
11183 core Cumulative error on Complex::I ** 100000000000000000000000000000000
11177 win core DATAでEOF文字以降が読めない
11174 thread os/arch threads memory leak
11142 win core Command line argument parser on windows handles double quotes inconsistently.
11064 core maybenotbug #singleton_methods for objects with special singleton_class returns an empty array
10580 test os/arch TestProcess#test_deadlock_by_signal_at_forking fails on ARM
10436 patch ext ruby -c and ripper inconsistency: m(&nil) {}
10416 build Create mechanism for updating of Unicode data files downstreams when we want
10128 win core Quoting problem for arguments of Kernel.system, Kernel.exec on Windows
10009 thread perf IO operation is 10x slower in multi-thread environment
9955 win build issue building dll on mingw, library not found
9944 win maybenotbug in ruby for windows in "system" a redirection to append a file works incorrectly
9760 build mkmf does not allow for linking against custom libraries when a system library is present
9507 core os/arch Ruby 2.1.0 is broken on ARMv5: tried to create Proc object without a block
9435 win core Kernel.system problem
9409 cygwin encoding Cygwin で "filesystem" の encoding が正しくないケース
9189 win encoding Build failure on Windows in case of nonascii TEMP environment.
9115 patch lib Logger traps all exceptions; breaks Timeout
9010 build ./configure --prefix= cannot handle directories with spaces
8782 ext Don't set rl_getc_function on editline
8445 patch core IO.open and IO#set_enconding does not support :fallback option
8444 core Regexp vars $~ and friends are not thread local
8299 core win Minor error in float parsing
8185 thread unfixable Thread/fork issue
7976 tracepoint notbug TracePoint call is at call point, not call site
7968 ext perf Poor UDPSocket#send performance in ruby 2.0.0 on windows
7964 encoding ext Writing an ASCII-8BIT String to a StringIO created from a UTF-8 String
7892 ext MIME encoding bug of NKF.nkf
7859 ext Readline: Incorrect arrow key behavior in vi_editing_mode insert mode with Readline 6.2
7840 build -Wdeclaration-after-statement is valid for C/ObjC but not for C++
7742 encoding System encoding (Windows-1258) is not recognized by Ruby to convert back to UTF-8
6360 win build Debug information build even without requesting it
6351 encoding transcode table generator does not support multi characters of Unicode
5334 ext maybenotbug Segmentation fault in InternetExplorer IServiceProvider interface
5179 core Complex#rationalize and to_r with approximate zeros
4173 test TestProcess#test_wait_and_sigchild が、たまに失敗する
4040 core SystemStackError with Hash[*a] for Large _a_
595 fiber Fiber ignores ensure clause