[ruby-dev:41667] [Bug #3459] test_regexp.rb Segmentation fault on x64-mswin64

Bug #3459: test_regexp.rb Segmentation fault on x64-mswin64
http://redmine.ruby-lang.org/issues/show/3459

起票者: sakiyama shin
ステータス: Open, 優先度: Normal
カテゴリ: core, Target version: 1.9.x
ruby -v: ruby 1.9.3dev (2010-06-20 trunk 28366) [x64-mswin64_90]

x64-mswin64 trunkのtest_regexp.rbでSegmentation fault します。
根本的な原因は/^()(?>\g<1>)*$/のメモリ確保に失敗するためのようです。
Segfault自体は以下の修正で出なくなります。

Z:\ruby-trunk>svn diff re.c
Index: re.c
===================================================================
--- re.c        (リビジョン 28367)
+++ re.c        (作業コピー)
@@ -1391,7 +1391,7 @@
        else {
            onig_errmsg_buffer err = "";
            onig_error_code_to_str((UChar*)err, (int)result);
-           rb_reg_raise(RREGEXP_SRC_PTR(re), RREGEXP_SRC_LEN(re), err, 0);
+           rb_reg_raise(RREGEXP_SRC_PTR(re), RREGEXP_SRC_LEN(re), err, re);
        }
     }

修正前のエラーログと、修正後のエラーログです。

Z:\ruby-trunk\build>nmake test-all TESTS=ruby/test_regexp.rb

Microsoft(R) Program Maintenance Utility Version 9.00.30729.01
Copyright (C) Microsoft Corporation.  All rights reserved.

        .\ruby.exe -I../lib -I".ext/x64-mswin64_90" "../tool/runruby.rb" --extou
t=".ext"  -- "../test/runner.rb" ruby/test_regexp.rb
Loaded suite ../test/runner
Started
...........F..Z:/ruby-trunk/lib/minitest/unit.rb:176: [BUG] Segmentation fault
ruby 1.9.3dev (2010-06-20 trunk 28366) [x64-mswin64_90]

-- control frame ----------
c:0019 p:---- s:0075 b:0075 l:000074 d:000074 CFUNC  :=~
c:0018 p:0104 s:0071 b:0070 l:0002a0 d:0002a0 METHOD Z:/ruby-trunk/lib/minitest/
unit.rb:176
c:0017 p:0036 s:0064 b:0064 l:000053 d:000063 BLOCK  Z:/ruby-trunk/test/ruby/tes
t_regexp.rb:495
c:0016 p:---- s:0059 b:0059 l:000058 d:000058 FINISH
c:0015 p:---- s:0057 b:0057 l:000056 d:000056 CFUNC  :each
c:0014 p:0077 s:0054 b:0054 l:000053 d:000053 METHOD Z:/ruby-trunk/test/ruby/tes
t_regexp.rb:493
c:0013 p:0537 s:0048 b:0048 l:000047 d:000047 METHOD Z:/ruby-trunk/test/ruby/tes
t_regexp.rb:564
c:0012 p:0063 s:0045 b:0045 l:000044 d:000044 METHOD Z:/ruby-trunk/lib/minitest/
unit.rb:680
c:0011 p:0091 s:0039 b:0039 l:000020 d:000038 BLOCK  Z:/ruby-trunk/lib/minitest/
unit.rb:641
c:0010 p:---- s:0034 b:0034 l:000033 d:000033 FINISH
c:0009 p:---- s:0032 b:0032 l:000031 d:000031 CFUNC  :each
c:0008 p:0026 s:0029 b:0029 l:000020 d:000028 BLOCK  Z:/ruby-trunk/lib/minitest/
unit.rb:635
c:0007 p:---- s:0026 b:0026 l:000025 d:000025 FINISH
c:0006 p:---- s:0024 b:0024 l:000023 d:000023 CFUNC  :each
c:0005 p:0082 s:0021 b:0021 l:000020 d:000020 METHOD Z:/ruby-trunk/lib/minitest/
unit.rb:634
c:0004 p:0188 s:0016 b:0016 l:000015 d:000015 METHOD Z:/ruby-trunk/lib/minitest/
unit.rb:594
c:0003 p:0041 s:0007 b:0007 l:001f08 d:000006 BLOCK  Z:/ruby-trunk/lib/minitest/
unit.rb:492
c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH
c:0001 p:0000 s:0002 b:0002 l:001628 d:001628 TOP
---------------------------
-- Ruby level backtrace information ----------------------------------------
Z:/ruby-trunk/lib/minitest/unit.rb:492:in `block in autorun'
Z:/ruby-trunk/lib/minitest/unit.rb:594:in `run'
Z:/ruby-trunk/lib/minitest/unit.rb:634:in `run_test_suites'
Z:/ruby-trunk/lib/minitest/unit.rb:634:in `each'
Z:/ruby-trunk/lib/minitest/unit.rb:635:in `block in run_test_suites'
Z:/ruby-trunk/lib/minitest/unit.rb:635:in `each'
Z:/ruby-trunk/lib/minitest/unit.rb:641:in `block (2 levels) in run_test_suites'
Z:/ruby-trunk/lib/minitest/unit.rb:680:in `run'
Z:/ruby-trunk/test/ruby/test_regexp.rb:564:in `test_exec'
Z:/ruby-trunk/test/ruby/test_regexp.rb:493:in `check'
Z:/ruby-trunk/test/ruby/test_regexp.rb:493:in `each'
Z:/ruby-trunk/test/ruby/test_regexp.rb:495:in `block in check'
Z:/ruby-trunk/lib/minitest/unit.rb:176:in `assert_match'
Z:/ruby-trunk/lib/minitest/unit.rb:176:in `=~'

[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


This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.
NMAKE : fatal error U1077: '.\ruby.exe' : リターン コード '0x3'
Stop.



修正後

Z:\ruby-trunk\build>nmake test-all TESTS=ruby/test_regexp.rb

Microsoft(R) Program Maintenance Utility Version 9.00.30729.01
Copyright (C) Microsoft Corporation.  All rights reserved.

        .\ruby.exe -I../lib -I".ext/x64-mswin64_90" "../tool/runruby.rb" --extou
t=".ext"  -- "../test/runner.rb" ruby/test_regexp.rb
Loaded suite ../test/runner
Started
...........F..E...................................................
Finished in 3.853200 seconds.

  1) Failure:
test_dup_warn(TestRegexp) [Z:/ruby-trunk/test/ruby/test_regexp.rb:822]:
Expected /\A\z/ to match "<internal:gem_prelude>:45: warning: assigned but unuse
d variable - paths\n<internal:gem_prelude>:162: warning: assigned but unused var
iable - path\n<internal:gem_prelude>:172: warning: assigned but unused variable
- path\n<internal:gem_prelude>:167: warning: assigned but unused variable - inst
alled_path\n<internal:gem_prelude>:197: warning: assigned but unused variable -
requirement\n<internal:gem_prelude>:197: warning: assigned but unused variable -
 version\n<internal:gem_prelude>:200: warning: assigned but unused variable - lo
aded_version\n<internal:gem_prelude>:206: warning: assigned but unused variable
- required_version\n<internal:gem_prelude>:218: warning: assigned but unused var
iable - numbers\n<internal:gem_prelude>:232: warning: assigned but unused variab
le - gem_name\n<internal:gem_prelude>:233: warning: assigned but unused variable
 - new_version\n<internal:gem_prelude>:234: warning: assigned but unused variabl
e - current_version\n<internal:gem_prelude>:226: warning: assigned but unused va
riable - gems_directory\n<internal:gem_prelude>:247: warning: assigned but unuse
d variable - file\n<internal:gem_prelude>:248: warning: assigned but unused vari
able - paths\n<internal:gem_prelude>:244: warning: assigned but unused variable
- require_paths\n<internal:gem_prelude>:117: warning: assigned but unused variab
le - verbose\n<internal:gem_prelude>:117: warning: assigned but unused variable
- debug\n<internal:gem_prelude>:293: warning: assigned but unused variable - e\n
<internal:lib/rubygems/defaults>:54: warning: assigned but unused variable - exe
c_format\n-:2: warning: assigned but unused variable - x\n".

  2) Error:
test_exec(TestRegexp):
RegexpError: failed to allocate memory: /^()(?>\g<1>)*$/
    Z:/ruby-trunk/test/ruby/test_regexp.rb:495:in `block in check'
    Z:/ruby-trunk/test/ruby/test_regexp.rb:493:in `each'
    Z:/ruby-trunk/test/ruby/test_regexp.rb:493:in `check'
    Z:/ruby-trunk/test/ruby/test_regexp.rb:564:in `test_exec'

66 tests, 999 assertions, 1 failures, 1 errors, 0 skips

Test run options: --seed 24382
NMAKE : fatal error U1077: '.\ruby.exe' : リターン コード '0x1'
Stop.


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