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Jun 21, 2023</p><ul class=tags><li><a href=https://ar.falsy.cat/tags/note/>Note</a></li><li><a href=https://ar.falsy.cat/tags/info-tech/>Info tech</a></li><li><a href=https://ar.falsy.cat/tags/development/>Development</a></li><li><a href=https://ar.falsy.cat/tags/programming-language/>Programming language</a></li><li><a href=https://ar.falsy.cat/tags/howto/>Howto</a></li></ul><aside class=mainTOC><details><summary>Table of Contents</summary><nav id=TableOfContents><ol><li><a href=#概要>概要</a></li><li><a href=#使い方>使い方</a><ol><li><a href=#コンパイル時にsanitizerを埋め込む>コンパイル時にsanitizerを埋め込む</a></li><li><a href=#実行時にsanitizerの挙動を指定する>実行時にsanitizerの挙動を指定する</a></li></ol></li><li><a href=#所感>所感</a></li></ol></nav></details></aside><a href=#概要><h2 id=概要><span class=hanchor arialabel=Anchor># </span>概要</h2></a><ul><li>バグを検知するコードを埋め込むための，sanitizerと呼ばれる機能がある</li><li>このページではsanitizerの使い方を説明する</li></ul><a href=#使い方><h2 id=使い方><span class=hanchor arialabel=Anchor># </span>使い方</h2></a><a href=#コンパイル時にsanitizerを埋め込む><h3 id=コンパイル時にsanitizerを埋め込む><span class=hanchor arialabel=Anchor># </span>コンパイル時にsanitizerを埋め込む</h3></a><ul><li>種類ごとにオプションが異なる</li><li>XXXにはSanitizer名をカンマ区切りで羅列する<ul><li>代表的なSanitizer名については後述</li></ul></li></ul><div class=highlight><div class=chroma><table class=lntable><tr><td class=lntd><pre tabindex=0 class=chroma><code><span class=lnt>1
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</span><span class=lnt>2
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</span></code></pre></td><td class=lntd><pre tabindex=0 class=chroma><code class=language-bash data-lang=bash><span class=line><span class=cl>g++ -fsanitizer<span class=o>=</span>XXX a.cc
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</span></span><span class=line><span class=cl>gcc -fsanitizer<span class=o>=</span>XXX a.c
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</span></span></code></pre></td></tr></table></div></div><a href=#代表的なsanitizer><h4 id=代表的なsanitizer><span class=hanchor arialabel=Anchor># </span>代表的なSanitizer</h4></a><ul><li><a href=https://gcc.gnu.org/onlinedocs/gcc/Instrumentation-Options.html rel=noopener>ここ</a>で<code>-fsanitizer=</code>を検索すると一覧が見れる</li><li><code>thread</code>は<code>address</code>や<code>undefined</code>と同居できない</li></ul><table><thead><tr><th style=text-align:left>名前</th><th style=text-align:left>説明</th></tr></thead><tbody><tr><td style=text-align:left><code>address</code></td><td style=text-align:left><a href=https://github.com/google/sanitizers/wiki/AddressSanitizer rel=noopener>Address Sanitizer</a></td></tr><tr><td style=text-align:left><code>undefined</code></td><td style=text-align:left><a href=https://clang.llvm.org/docs/UndefinedBehaviorSanitizer.html rel=noopener>Undefined Behavior Sanitizer</a></td></tr><tr><td style=text-align:left><code>thread</code></td><td style=text-align:left><a href=https://github.com/google/sanitizers/wiki#threadsanitizer rel=noopener>Thread Sanitizer</a></td></tr></tbody></table><a href=#実行時にsanitizerの挙動を指定する><h3 id=実行時にsanitizerの挙動を指定する><span class=hanchor arialabel=Anchor># </span>実行時にsanitizerの挙動を指定する</h3></a><ul><li>sanitizerが埋め込まれたバイナリに対して，実行時に，sanitizerの挙動を環境変数で指定することができる</li><li>詳細は各sanitizerの説明ページを参照</li></ul><a href=#所感><h2 id=所感><span class=hanchor arialabel=Anchor># </span>所感</h2></a><ul><li><code>thread</code>が強すぎる<ul><li><code>thread</code>は実際に
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<a href=https://git.falsy.cat/nf7/nf7 rel=noopener>Nf7</a>のデバッグで使ってる<ul><li>sanitizerがなければ気づけなかったcondition raceがかなりあった<ul><li>格好つけてロックフリーで書いたせい</li></ul></li></ul></li></ul></li><li><code>thread</code>が<code>address</code>や<code>undefined</code>と一緒に使えないのが痛い<ul><li>どちらともを使うには，<code>thread</code>でビルド，テストした後に，オプションを変えてビルドし直し，同じテストを実行しなければならない</li></ul></li></ul><div class=content-list><h2>Related Notes</h2><ul class=section-ul><li class=section-li><div class=section><p class=meta>Jun 21, 2023</p><div class=desc><h3><a href=https://ar.falsy.cat/note/info-tech/dart/ class=internal-link data-src=/note/info-tech/dart/>dart言語</a></h3></div><div class=spacer></div><ul class=tags><li><a href=https://ar.falsy.cat/tags/note/>Note</a></li><li><a href=https://ar.falsy.cat/tags/info-tech/>Info-Tech</a></li><li><a href=https://ar.falsy.cat/tags/development/>Development</a></li><li><a href=https://ar.falsy.cat/tags/programming-language/>Programming-Language</a></li></ul></div></li><li class=section-li><div class=section><p class=meta>Jun 21, 2023</p><div class=desc><h3><a href=https://ar.falsy.cat/note/info-tech/install-archlinux/ class=internal-link data-src=/note/info-tech/install-archlinux/>ArchLinuxのインストール</a></h3></div><div class=spacer></div><ul class=tags><li><a href=https://ar.falsy.cat/tags/note/>Note</a></li><li><a href=https://ar.falsy.cat/tags/info-tech/>Info-Tech</a></li><li><a href=https://ar.falsy.cat/tags/linux/>Linux</a></li><li><a href=https://ar.falsy.cat/tags/howto/>Howto</a></li></ul></div></li><li class=section-li><div class=section><p class=meta>Jun 21, 2023</p><div class=desc><h3><a href=https://ar.falsy.cat/note/info-tech/publish-obsidian-by-quartz/ class=internal-link data-src=/note/info-tech/publish-obsidian-by-quartz/>ObsidianとQuartzによるセカンドブレインデジタルガーデンの構築</a></h3></div><div class=spacer></div><ul class=tags><li><a href=https://ar.falsy.cat/tags/note/>Note</a></li><li><a href=https://ar.falsy.cat/tags/info-tech/>Info-Tech</a></li><li><a href=https://ar.falsy.cat/tags/web/>Web</a></li><li><a href=https://ar.falsy.cat/tags/tool/>Tool</a></li><li><a href=https://ar.falsy.cat/tags/howto/>Howto</a></li></ul></div></li></ul></div></article><hr><div class=page-end id=footer><div class=backlinks-container><h3>Backlinks</h3><ul class=backlinks><li>No backlinks found</li></ul></div><div><script src=https://cdn.jsdelivr.net/npm/d3@6.7.0/dist/d3.min.js integrity="sha256-+7jaYCp29O1JusNWHaYtgUn6EhuP0VaFuswhNV06MyI=" crossorigin=anonymous></script><h3>Interactive Graph</h3><div id=graph-container></div><style>:root{--g-node:var(--secondary);--g-node-active:var(--primary);--g-node-inactive:var(--visited);--g-link:var(--outlinegray);--g-link-active:#5a7282}</style><script src=https://ar.falsy.cat/js/graph.6579af7b10c818dbd2ca038702db0224.js></script></div></div><div id=contact_buttons><footer><p>Made by falsycat using <a href=https://github.com/jackyzha0/quartz>Quartz</a>, © 2023</p><ul><li><a href=https://ar.falsy.cat/>Home</a></li><li><a href=https://falsy.cat/>Portfolio</a></li><li><a href=https://falsy.cat/admin>Fediverse</a></li><li><a href=https://github.com/falsycat>GitHub</a></li><li><a href=https://youtube.com/@falsycat>YouTube</a></li></ul></footer></div></div></body></html> |