ruby-dev

Bug #1328: "p eval('0' + '+0.1'*n)" の挙動
http://redmine.ruby-lang.org/issues/show/1328

起票者: Kenta Murata
ステータス: Open, 優先度: Normal
カテゴリ: core, Target version: 1.9.2
ruby -v: ruby 1.9.2dev (2009-03-29) [i386-darwin9.6.0]

"p eval('0'+'+0.1'*n)" を評価すると、n がある値 N を超えたときに
スタックが溢れますが、バージョン 1.9.2 の N が バージョン 1.9.1 より
小さくなっています。 

$ ~/ruby-1.9.1-r22762/bin/ruby -ve "p eval('0'+'+0.1'*13093)"
ruby 1.9.1p0 (2009-03-04 revision 22762) [i386-darwin9.6.0]
1309.2999999999
$ ~/ruby-1.9.1-r22762/bin/ruby -ve "p eval('0'+'+0.1'*13094)"
ruby 1.9.1p0 (2009-03-04 revision 22762) [i386-darwin9.6.0]
-e:1:in `eval': stack level too deep (SystemStackError)
        from -e:1:in `<main>'

$ ~/ruby-1.9.2-r23093/bin/ruby -ve "p eval('0'+'+0.1'*7481)"
ruby 1.9.2dev (2009-03-29) [i386-darwin9.6.0]
748.10000000010155
$ ~/ruby-1.9.2-r23093/bin/ruby -ve "p eval('0'+'+0.1'*7482)"
ruby 1.9.2dev (2009-03-29) [i386-darwin9.6.0]
-e:1:in `eval': stack level too deep (SystemStackError)
        from -e:1:in `<main>'


----------------------------------------
http://redmine.ruby-lang.org

Thread

Prev Next

In This Thread

Prev Next

[#38109] [Bug #1234] RDoc failure in benchmark/bm_so_meteor_contest.rb at or around line 542 column — daigo moriwaki <redmine@...>

[#38110] [Bug #1237] URI.decodeが期待した値を返さない — Kazuhiko ISOBE <redmine@...>

[#38118] CSV.readでブロック — madoka yamamoto <yamamotomadoka@...>

[#38121] regex performace tuning and ABI compatibility — Yukihiro Matsumoto <matz@...>

[#38131] Bug when daemonizing — rubikitch@...

[#38135] [Bug:trunk] SizedQueue can be pushed over its limit — Yusuke ENDOH <mame@...>

[#38140] IO::WantRead and IO::WantWrite module for nonblocking exceptions — Tanaka Akira <akr@...>

[#38144] forwardable of ruby-1.9.1 — keiju@... (Keiju ISHITSUKA)

[#38145] MSの方との相談に先立って — masayoshi takahashi <maki@...>

[#38150] [Bug #1267] DL::Handle#sym segfaults with nil — Nobuyoshi Nakada <redmine@...>

[#38153] [feature:trunk] warning when Kernel#p is used — Yusuke ENDOH <mame@...>

[#38155] [Bug #1270] FileUtils.chown: グループを数値指定するとTypeError — Sakuro OZAWA <redmine@...>

[#38160] addressing to rb_jmp_buf — 真野 靖 <mano@...>

[#38168] [Bug:1.8] Thread.new { Queue.new.pop }; fork — Tanaka Akira <akr@...>

[#38169] [Bug #1290] lib/mkmf.rb:73: [BUG] Segmentation fault — pegacorn jp <redmine@...>

[#38171] [Bug:1.8] SEGV by ObjectSpace.define_finalizer("") {} — Tanaka Akira <akr@...>

[#38173] [Bug #1297] Pathname#subの挙動について — Shintaro KAKUTANI <redmine@...>

[#38178] Re: [ruby-core:22577] [Bug #1205] SET_STACK_END crashes due to uninitialized ruby_current_thread — Nobuyoshi Nakada <nobu@...>

[#38179] Re: [ruby-core:22923] Re: [Bug #1214] Build issues — Nobuyoshi Nakada <nobu@...>

[#38180] [Bug #1300] Failure: test_open(TestSyslog) — Kazuhiro NISHIYAMA <redmine@...>

[#38182] [Bug #1305] target_os が darwin 系の場合に動的リンク不可能な実行形式が生成される場合がある — Kenta Murata <redmine@...>

[#38183] [Bug #1305](Closed) target_os が darwin 系の場合に動的リンク不可能な実行形式が生成される場合がある — Nobuyoshi Nakada <redmine@...>

[#38184] [Bug #1310] HEAP_SIZE で不具合？ — Hikari AIKAWA <redmine@...>

[#38185] [Bug #1310] HEAP_SIZE で不具合？ — Narihiro Nakamura <redmine@...>

[#38189] [Backport #1221](Closed) [PATCH] load がディレクトリを読み込もうとしてエラー — Shyouhei Urabe <redmine@...>

[#38191] big time — Tanaka Akira <akr@...>

[#38192] Ruby1.9系のString#%の挙動について — Masao Mutoh <mutomasa@...>

[#38207] [Bug #1328] "p eval('0' + '+0.1'*n)" の挙動 — Kenta Murata <redmine@...>

[#38208] [Bug #1329] Ruby 1.8.8 で "p eval('0' + '+0.1'*n)" が Segmentation Fault を発生させる — Kenta Murata <redmine@...>

[#38209] [Bug #1329] Ruby 1.8.8 で "p eval('0' + '+0.1'*n)" が Segmentation Fault を発生させる — Kenta Murata <redmine@...>

[#38210] [Bug #1330] BigDecimal オブジェクトを何度も使い回すと Bus Error が発生することがある — Kenta Murata <redmine@...>

[#38211] [Bug #1329](Closed) Ruby 1.8.8 で "p eval('0' + '+0.1'*n)" が Segmentation Fault を発生させる — Nobuyoshi Nakada <redmine@...>

[#38217] [Feature #1333] Delegator < BasicObject — Shyouhei Urabe <redmine@...>

[#38218] rinda/eval.rb — Masatoshi SEKI <m_seki@...>

[#38220] [Bug #1337] mkmf.rbが生成したMakefileでmake -j N installに失敗する場合がある — Takuto Matsuu <redmine@...>

[#38221] [Bug #1338] Kernel#select crashes when many files are opened — Kengo Matsuyama <redmine@...>

[#38222] *BSD で fork できない理由 — "KISHIMOTO, Makoto" <[email protected]>

[#38225] [Bug #1339] 'cc' for LDSHARED and LIBRUBY_LDSHARED on darwin* — Wataru Kimura <redmine@...>

[ruby-dev:38207] [Bug #1328] "p eval('0' + '+0.1'*n)" の挙動

Thread

In This Thread

[#38160] addressing to rb_jmp_buf — 真野靖 <mano@...>