{"id":7632,"date":"2023-05-23T11:34:57","date_gmt":"2023-05-23T03:34:57","guid":{"rendered":"https:\/\/yanjingang.com\/blog\/?p=7632"},"modified":"2023-05-25T13:39:04","modified_gmt":"2023-05-25T05:39:04","slug":"addresssanitizer%e7%9a%84%e5%86%85%e5%ad%98%e6%ba%a2%e5%87%ba%e5%81%87%e8%b1%a1","status":"publish","type":"post","link":"https:\/\/yanjingang.com\/blog\/?p=7632","title":{"rendered":"AddressSanitizer\u7684\u5185\u5b58\u6cc4\u6f0f\u5047\u8c61"},"content":{"rendered":"<p>\u6700\u8fd1\u5728\u5f00\u53d1\u4e00\u4e2a\u5c0f\u7684C++\u9879\u76ee\uff0c\u7531\u4e8eASan\u6bd4\u8f83\u4fbf\u4e8e\u5728\u5f00\u53d1\u9636\u6bb5\u5e2e\u52a9\u53d1\u73b0\u5185\u5b58\u95ee\u9898\uff0c\u6240\u4ee5\u5728\u7f16\u8bd1\u8bbe\u7f6e\u91cc\u9ed8\u8ba4\u90fd\u662f\u6253\u5f00\u7684\uff0c\u5b83\u5de5\u4f5c\u7684\u5f88\u597d\uff0c\u5e2e\u52a9\u56e2\u961f\u53d1\u73b0\u4e86\u4e0d\u5c11\u95ee\u9898\u3002<\/p>\n<p>\u6628\u5929\u7ed9\u9879\u76ee\u589e\u52a0\u4e86\u8fdb\u7a0b\u7c92\u5ea6\u7684\u8d44\u6e90\u76d1\u63a7\uff0c\u53d1\u73b0\u8fdb\u7a0b\u542f\u52a8\u540e\u5185\u5b58\u4f1a\u6301\u7eed\u589e\u957f\uff0c\u5177\u4f53\u53bb\u5b9a\u4f4d\u7684\u8bdd\uff0c\u4f1a\u770b\u5230\u975e\u5e38\u5947\u602a\u7684\u73b0\u8c61\uff0c\u5c31\u662f\u5b83\u4f3c\u4e4e\u4f1a\u5728\u4e0d\u53ef\u80fd\u6cc4\u6f0f\u7684\u5730\u65b9\u6cc4\u6f0f\uff0c\u6bd4\u5982\u4e00\u4e2a\u5f88\u666e\u901a\u7684\u6587\u4ef6\u5185\u5bb9\u8bfb\u53d6\uff1a<\/p>\n<pre class=\"pure-highlightjs\"><code class=\"\">std::ifstream f;\r\nf.open(fileName, std::ios::in);\r\nif (!f.is_open())\r\n{\r\n    LOG(WARNING) &lt;&lt; \"Failed to open File [\" &lt;&lt; fileName &lt;&lt; \"].\";\r\n    return false;\r\n}\r\nstd::string line;\r\nwhile (std::getline(f, line))\r\n{\r\n    str += line;\r\n}\r\nf.close();<\/code><\/pre>\n<p>\u5b9e\u5728\u662f\u770b\u4e0d\u51fa\u6709\u4ec0\u4e48\u5185\u5b58\u6cc4\u6f0f\u70b9\uff0c\u4f46\u53ea\u8981\u4e00\u8c03\u7528\uff0c\u5185\u5b58\u5c31\u4f1a\u7f13\u6162\u589e\u957f\uff0c\u8dd1\u4e00\u665a\u4e0a\u751a\u81f3\u80fd\u589e\u957f\u51e0\u767eM\u3002<\/p>\n<p><a href=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2023\/05\/mem-leak.png\"><img loading=\"lazy\" class=\"alignnone size-full wp-image-7652\" src=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2023\/05\/mem-leak.png\" alt=\"\" width=\"767\" height=\"462\" srcset=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2023\/05\/mem-leak.png 767w, https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2023\/05\/mem-leak-300x181.png 300w, https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2023\/05\/mem-leak-624x376.png 624w\" sizes=\"(max-width: 767px) 100vw, 767px\" \/><\/a><\/p>\n<p>\u56e0\u4e3a\u5e73\u65f6\u5f00\u53d1ASan\u9ed8\u8ba4\u5f00\u7740\u5e76\u6ca1\u6709\u68c0\u6d4b\u5230\uff0c\u53ea\u80fd\u4e0avalgrind\uff1a<\/p>\n<pre class=\"pure-highlightjs\"><code class=\"\">valgrind --leak-check=full .\/output\/bin\/test<\/code><\/pre>\n<p>\u7136\u540e\u5c34\u5c2c\u7684\u4e00\u5e55\u51fa\u73b0\u4e86\uff0c\u5185\u5b58\u7684\u6301\u7eed\u589e\u957f\u7adf\u7136\u662f\u56e0\u4e3aASan\uff0c\u770b\u8d77\u6765\u662f\u68c0\u6d4b\u673a\u5236\u9700\u8981\u786e\u4fddRedZone\u4e0d\u91ca\u653e\u5bfc\u81f4\u7684\u5185\u5b58\u6ea2\u51fa\u5047\u8c61\u3002<\/p>\n<pre class=\"pure-highlightjs\"><code class=\"\">==127662== by 0x495E2B6: __sanitizer::Die() (sanitizer_termination.cpp:59)\r\n==127662== by 0x4934398: __asan::AsanCheckDynamicRTPrereqs() (asan_linux.cpp:181)\r\n==127662== by 0x4940544: __asan::AsanInitInternal() [clone .part.0] (asan_rtl.cpp:420)<\/code><\/pre>\n<p>\u5173\u95edASan\u540e\u73b0\u8c61\u6d88\u5931\uff0c\u4e00\u5207\u6b63\u5e38\uff0c\u8bb0\u5f55\u4ee5\u4e0b\uff0c\u4ee5\u4fbf\u63d0\u9192\u3002<\/p>\n<p>yan 5.23<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6700\u8fd1\u5728\u5f00\u53d1\u4e00\u4e2a\u5c0f\u7684C++\u9879\u76ee\uff0c\u7531\u4e8eASan\u6bd4\u8f83\u4fbf\u4e8e\u5728\u5f00\u53d1\u9636\u6bb5\u5e2e\u52a9\u53d1\u73b0\u5185\u5b58\u95ee\u9898\uff0c\u6240\u4ee5\u5728\u7f16\u8bd1\u8bbe\u7f6e\u91cc\u9ed8\u8ba4\u90fd\u662f\u6253\u5f00\u7684\uff0c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1027],"tags":[1295,1296,877,1294],"_links":{"self":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/7632"}],"collection":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7632"}],"version-history":[{"count":3,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/7632\/revisions"}],"predecessor-version":[{"id":7653,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/7632\/revisions\/7653"}],"wp:attachment":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7632"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7632"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7632"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}