Quickies for gdb
Debugging gdb'ing specific architectures [permalink] With a fat binary (32/64bit), gdb picks the 64 bit version. If you're trying to debug a 32-bit unit test on the command-line though, the 64-bitness of /Developer/Tools/otest gets in the way: % gdb /Developer/Tools/otest 2008-10-31 19:29:50.834 otest[711:813] Error loading /blah/blah/blah/build/Debug/Tests.octest/Contents/MacOS/Tests: dlopen(/bla
Debugging C/C++ and CPython using GDB 7’s new Python extension support
I’ve recently been looking into ways to improve my debugging experience with mixed Python and C/C++ programs. I spend a fair amount of time working on systems built using both languages in tandem, and the tools available for debugging across the languages have historically been very limited. Often, logging and/or intimate knowledge of the Python C-API (and, in my case, boost.python) were the prima
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スクリプト言語用ã®ãƒ‡ãƒãƒƒã‚¬ã®ä½¿ã„æ–¹ - Ruby, Python, Perl スクリプト言語用㮠CUIã®ãƒ‡ãƒãƒƒã‚¬ã®ä½¿ã„方を簡å˜ã«ã¾ã¨ã‚ã¾ã—ãŸã€‚対象言語㯠Ruby, Python, Perl ã§ã™ã€‚ ç§ã¯ C, C++ ã§ãƒ—ãƒã‚°ãƒ©ãƒ を書ã„ã¦ã„ã‚‹ã¨ãã¯ãƒ‡ãƒãƒƒã‚¬ (主㫠GNU/Linux 上㮠gdb) ã‚’é »ç¹ã«åˆ©ç”¨ã—ã¾ã™ã€‚ã—ã‹ã—ã€ã‚¹ã‚¯ãƒªãƒ—ト言語ã§ã¯ãã‚Œã»ã©ã§ã‚‚ã‚ã‚Šã¾ã›ã‚“。ã“ã‚Œã¯ãŠãらã次ã®ã‚ˆã†ãªç†ç”±ã«ã‚ˆã‚Šã¾ã™ã€‚ ビルドãŒä¸è¦ãªã®ã§ printf デãƒãƒƒã‚°ãŒå®¹æ˜“ (ã‚る程度大ãã„ C++ ã®ãƒ—ãƒã‚°ãƒ©ãƒ ã§ã¯ãƒ“ルド時間ãŒé•·ã„ã®ã§ printf ã®æŒ¿å…¥ã¯ã—ã‚“ã©ã„) 異常終了時ã«ã‚¹ã‚¿ãƒƒã‚¯ãƒˆãƒ¬ãƒ¼ã‚¹ãŒè¡¨ç¤ºã•ã‚Œã‚‹ (Ruby, Python ãªã‚‰è‡ªå‹•ã€Perl ã®å ´åˆã¯ use Carp; $SIG{__DIE__} = \&Carp::confess; ãªã©) オブジェクトã®ã‚¤ãƒ³ã‚¹ãƒšã‚¯ãƒˆãŒç°¡å˜ (Ru
Emacs 㧠C ã¨ã‹ Perl ã¨ã‹ Ruby ã®ãƒ‡ãƒãƒƒã‚°ã‚’ã™ã‚‹ã¨æ°—æŒã¡ã„ã„ | フッå›ã®æ—¥å¸¸
全国ã®printデãƒãƒƒã‚°æ„›å¥½å®¶ã®çš†æ§˜ã€ã“ã‚“ã«ã¡ã¯ã€‚VSã¨ã‹Eclipseã¨ã‹ã®IDE以外ã§ãƒ‡ãƒãƒƒã‚¬ã‚’使ã£ãŸã“ã¨ã®ãªã„僕ãŒã‚„ã£ã¦ãã¾ã—ãŸã‚ˆã€‚ 最近ã€C言語ã§ãƒ’ーコラ言ã£ã¦ã‚‹çœŸã£æœ€ä¸ãªè¨³ã§ã™ãŒã€C言語ã ã¨printデãƒãƒƒã‚°ãŒã‚„ã‚Šã«ãã„訳ã§ã€ãƒ‡ãƒãƒƒã‚¬æ§˜ã®åŠ›ã‚’借りã¦ã¿ãŸããªã£ãŸè¨³ã§ã™ã€‚ã¨ã„ã†è¨³ã§ã€å··ã§æœ‰å㪠gdb ã‚’ã¡ã‚‡ã£ã¨è©¦ã—ã¦ã¿ã¾ã—ãŸã€‚ 基本的ãªä½¿ã„æ–¹ã¯ã€ä»¥ä¸‹ã‚’å‚考ã«ã—ã¦ã¾ã™ã€‚gdb を用ã„ãŸãƒ‡ãƒãƒƒã‚°æ–¹æ³•GDBウノウラボ Unoh Labs: gdbã®ä½¿ã„æ–¹ ã§ã€ãªã‚“ã ã‹ Emacsã‹ã‚‰ã‚‚使ãˆã‚‹ã¿ãŸã„ãªã‚“ã§ã€è©¦ã—ã¦ã¿ãŸã‚“ã§ã™ãŒã€ã“ã‚ŒãŒä½¿ã„ã‚„ã™ãã¦ã³ã£ãり。"M-x gdb" ã§èµ·å‹•ã™ã‚‹ã¨ã€Emacs ã®ã‚½ãƒ¼ã‚¹ä¸Šã«ã€ç¾åœ¨ã®è¡ŒãŒé»’三角ã§ã€ãƒ–レークãƒã‚¤ãƒ³ãƒˆãŒèµ¤ä¸¸ã§è¡¨ç¤ºã•ã‚Œã¾ã™ã€‚後ã¯ã€ã‚³ãƒžãƒ³ãƒ‰ãƒ©ã‚¤ãƒ³ã§ã®æ“作ã¨åŒã˜ã‚ˆã†ã«ã€s ã¨ã‹ n ã§ã‚¹ãƒ†ãƒƒãƒ—実行ã§ãã¾ã™ã€‚ ã‚ーã€ã‚‚ã—ã‹ã—ã¦ã€Perl ã¨ã‹ Rub
DSAS開発者ã®éƒ¨å±‹:オープンソースを楽ã—むエンジニアã®ä¸€æ—¥ 〜　コードを楽ã—ãèªã‚€å·¥å¤«
C言語ã§æ›¸ã‹ã‚ŒãŸã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã‚’èªã‚“ã§ã„ã‚‹ã¨ãã€é–¢æ•°ãƒã‚¤ãƒ³ã‚¿ã‹ã‚‰å‘¼ã³å‡ºã•ã‚Œã¦ã„る機能ã®å®Ÿä½“ãŒã©ã“ã«æ›¸ã‹ã‚Œã¦ã„ã‚‹ã®ã‹ã‚’探ã™ã®ã«è‹¦ã—ã‚“ã 経験ã¯ã‚ã‚Šã¾ã›ã‚“ã‹ï¼Ÿ ç§ã¯ã‚ã‚Šã¾ã™ã€ã„ã£ã±ã„ã‚ã‚Šã¾ã™ï¼ï¼ ãã‚“ãªã¨ãã¯ã©ã†ã™ã‚‹ã‹ã¨ã„ã†ã¨ãƒ»ãƒ»ãƒ» æ‰‹é †ï¼‘ï¼šã€€ã¾ãšã¯æ°—分転æ›ã‚’ã™ã‚‹ï¼ æ‰‹é †ï¼’ï¼šã€€ãã—ã¦æ°—åˆã„を入れ直ã™ï¼ æ‰‹é †ï¼“ï¼šã€€ã•ã‚‰ã«æ°—力ã§èªã¿ç •ãï¼ æ‰‹é †ï¼”ï¼šã€€æœ€å¾Œã«æ ¹æ€§ã§ç™ºè¦‹ã™ã‚‹ï¼ ã“ã‚ŒãŒã€ã”ã一般的ãªä½œæ¥æ‰‹é †(?)ã‹ã¨æ€ã„ã¾ã™ãƒ»ãƒ»ãƒ»ï¼ˆã”ã‚ã‚“ãªã•ã„嘘ã§ã™ï¼‰ ã§ã‚‚ã¾ã‚ã€å®Ÿéš›ã«ã“ã“ã¾ã§å‡ºæ¥ã‚Œã°ã€ãã®ãƒ—ãƒã‚°ãƒ©ãƒ ã®å¤§ã¾ã‹ãªæ§‹æˆã¨ã‹ç™–ã¿ãŸã„ãªã‚‚ã®ã¯ã ã„ãŸã„把æ¡ã§ãã¦ã„ã‚‹ã¯ãšãªã®ã§ã€ä»–ã®é–¢æ•°ãƒã‚¤ãƒ³ã‚¿ã«ã¤ã„ã¦ã‚‚ã‚る程度当ãŸã‚Šã‚’ã¤ã‘ã¦è¦‹ã¤ã‘ã ã™ã“ã¨ãŒå‡ºæ¥ã‚‹ã‚ˆã†ã«ã¯ãªã‚‹ã‹ã¨æ€ã„ã¾ã™ã€‚ ・・・・・ãŒã€ã€ã§ãã‚Œã°æ°—åˆã„ã¨æ ¹æ€§ã‚’使ã‚ãšã«è¿½ãˆã‚‹ãªã‚‰è¿½ã„ãŸã„ã®ãŒäººæƒ…ã§ã™ã‚ˆã。 straceã‚„ltraceを使ãˆã°ã‚·ã‚¹ãƒ†ãƒ コールやライブラリコ
gdb豆知è˜(続ã) - 未æ¥ã®ã„ã¤ã‹/hyoshiokã®æ—¥è¨˜
gdb豆知è˜(d:id:hyoshiok:20080926#p1)ã®ç¶šã。 Windowsã®é–‹ç™ºç’°å¢ƒã¯çŸ¥ã‚‰ãªã„ã®ã ã‘ã©ã€å™‚ã«ã‚ˆã‚‹ã¨ç´ 敵ãªIDE(çµ±åˆé–‹ç™ºç’°å¢ƒ)ãŒæ•´å‚™ã•ã‚Œã¦ã„ã¦ã€ãƒžã‚¦ã‚¹ã§ãã‚Šãã‚Šã€ãƒ˜ãƒ«ãƒ—も充実ã€ç°¡å˜ç°¡å˜ã‚‰ã—ã„。ãã‚Œã‹ã‚‰æ¯”ã¹ã‚‹ã¨ã€GNU Emacs+gcc+gdbã¨ã„ã†ã®ã¯å¾®å¦™ã«ãƒ¬ãƒˆãƒæ„Ÿã‚ãµã‚Œã‚‹ã€‚ã¨ã¯è¨€ã†ã‚‚ã®ã®ãƒ‡ãƒãƒƒã‚°ã®ãƒ—ãƒã‚»ã‚¹ã¯IDE的マルãƒã‚¦ã‚£ãƒ³ãƒ‰ã‚¦ã€GUIã§ã‚°ãƒªã‚°ãƒªã§ã‚ã‚ã†ã¨ãªã‹ã‚ã†ã¨åŸºæœ¬ã¯å¤‰ã‚‰ãªã„ã®ã§ã€ã‚ˆã—ã¨ã—よã†ã€‚ コンパイル時ã®ã‚ªãƒ—ション gccã®-gオプションを付ã‘る。Makefileã®ã‚³ãƒ³ãƒ‘イルオプションã¯é€šå¸¸CFLAGSãªã®ã§CFLAGS=-gã¨ã—ã¦ãŠã。最é©åŒ–オプション(-O)ã¨åŒæ™‚ã«ä»˜ã‘ã‚‹ã“ã¨ãŒã§ãã‚‹ã®ã§(ç´ æ™´ã—ã„)ã€æœ€é©åŒ–オプションもé©å½“ã«ä»˜ã‘ã¦ãŠã。 時々ã€ãƒ‡ãƒãƒƒã‚°ã‚ªãƒ—ション(-g)を付ã‘ã‚‹ã¨ãã¯æœ€é©åŒ–オプションをã¤ã‘ãªã„ã€ã‚ã‚‹ã„ã¯-O0(アルファベッ
GNU Emacs Manual
The Emacs Editor Emacs is the advanced, extensible, customizable, self-documenting editor. This manual describes how to edit with Emacs and some of the ways to customize it; it corresponds to GNU Emacs version 30.2. The GNU Emacs website is at https://www.gnu.org/software/emacs/. To view this manual in other formats, click here. You can also purchase a printed copy from the FSF store. For informat
rubyã®ãƒã‚°ã€gdb豆知è˜(ãã®3) - 未æ¥ã®ã„ã¤ã‹/hyoshiokã®æ—¥è¨˜
以下ã§SEGVã™ã‚‹ $ ./ruby -e 'eval("1+" * 100000 + "1")' Segmentation fault å‚照： http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-dev/37007 ã•ã£ããgdbã§ãŠã£ã¦ã¿ã‚‹ã€‚ (gdb) run -e 'eval("1+" * 100000 + "1")' Starting program: /home/hyoshiok/work/ruby_trunk/ruby/ruby -e 'eval("1+" * 100000 + "1")' [Thread debugging using libthread_db enabled] [New Thread 0xb7d3c6b0 (LWP 8295)] [New Thread 0xb7f10b90 (LWP 8296)]
PHP - Segmentation fault åŽŸå› ä¸æ˜Žã®ã‚¨ãƒ©ãƒ¼ã‚’デãƒãƒƒã‚°ã™ã‚‹æ–¹æ³• | æµ·ã¯æµ·ã€é¢¨ã¯é¢¨ dozo.rgr.jp
失敗ã¯æˆåŠŸã®æ¯ã€‚ ã¨ã„ã†ã“ã¨ã«ã—ã¦ãŠã“ã†ã€‚ (ノ・・)ン。。。。。。(((â—コãƒã‚³ãƒãƒƒ 開発用ã®ã‚µãƒ¼ãƒã‚’構築ã—〠実際ã«é–‹ç™ºã—ã¦ã„ã‚‹ã¨ã©ã†ã«ã‚‚変ãªå‹•ãã‚’ã—ã¦ã„ãŸã€‚ ã¨ã„ã†ã®ã‚‚ã€ã‚µã‚¤ãƒˆã«ã‚¢ã‚¯ã‚»ã‚¹ã™ã‚‹ã¨ã€ ç”»é¢ãŒçœŸã£ç™½ã ã£ãŸã‚Šã‚¢ã‚¯ã‚»ã‚¹ã§ãã¾ã›ã‚“メッセージãŒå‡ºãŸã‚Šã™ã‚‹ã€‚ Apacheã®ãƒ—ãƒã‚»ã‚¹ãŒè½ã¡ãŸã‚“ã ã‚ã†ãªã。 ã¨æ¼ 然ã¨æ€ã£ã¦ã„ãŸã®ã ãŒã€ çµæ§‹é »ç¹ã«èµ·ã“ã‚‹ã®ã•ã™ãŒã«èª¿æŸ»ã‚’ã™ã‚‹ã“ã¨ã«ã—ãŸã€‚ ã¡ãªã¿ã«æ§‹æˆã¯ Debian Sarge Apache 2.0.x (debian package) PHP 5.1.x ã•ã¦ã€Apacheã®ã‚¨ãƒ©ãƒ¼ãƒã‚°ã‚’ã¿ã¦ã¿ã‚‹ã¨ã€ エラーãŒç¶šç™ºã—ã¦ã„ã¦ç›®ã‚’丸ãã—ãŸã€‚ [Sat May 13 17:44:51 2006] [notice] child pid 28627 exit signal Segmentation fault (11) [Sat May 13 17:
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