{"id":865,"date":"2026-05-14T15:18:12","date_gmt":"2026-05-14T07:18:12","guid":{"rendered":"https:\/\/hsiang.cc\/?p=865"},"modified":"2026-05-13T15:24:01","modified_gmt":"2026-05-13T07:24:01","slug":"c-%e7%9a%84%e9%82%a3%e4%ba%9b%e7%9c%89%e8%a7%92%e6%8c%87%e6%a8%99%e7%94%a8%e5%ae%8c%e8%a6%81%e6%ad%b8%e9%9b%b6-%e6%87%b8%e7%a9%ba%e6%8c%87%e6%a8%99%e7%9a%84%e6%81%90%e6%80%96%e6%95%85","status":"publish","type":"post","link":"https:\/\/hsiang.cc\/?p=865","title":{"rendered":"[C \u7684\u90a3\u4e9b\u7709\u89d2]\u6307\u6a19\u7528\u5b8c\u8981\u6b78\u96f6 \u2014 \u61f8\u7a7a\u6307\u6a19\u7684\u6050\u6016\u6545\u4e8b"},"content":{"rendered":"<p>\u6709\u4e00\u7a2e bug\uff0c\u6211\u53ea\u8981\u60f3\u5230\u5c31\u982d\u76ae\u767c\u9ebb\u3002<\/p>\n<p>\u660e\u660e\u7a0b\u5f0f\u8dd1\u5f97\u597d\u597d\u7684\uff0c\u7a81\u7136\u5728\u67d0\u500b\u5b8c\u5168\u4e0d\u76f8\u95dc\u7684\u5730\u65b9 crash\uff0c<br \/>\n\u6216\u662f\u8cc7\u6599\u83ab\u540d\u5176\u5999\u88ab\u6539\u6389\uff0c<br \/>\n\u6216\u662f\u5728\u958b\u767c\u6a5f\u4e0a\u5b8c\u5168\u6b63\u5e38\uff0c\u5230\u4e86\u7522\u54c1\u4e0a\u5076\u723e\u51fa\u554f\u984c\u3002<\/p>\n<p>\u5f88\u591a\u6642\u5019\uff0c\u8ffd\u5230\u6700\u5f8c\u90fd\u662f\u540c\u4e00\u500b\u5147\u624b\uff1a<\/p>\n<p><strong>\u61f8\u7a7a\u6307\u6a19\uff08Dangling Pointer\uff09\u3002<\/strong><\/p>\n<p><!--more--><\/p>\n<hr \/>\n<h2>\u61f8\u7a7a\u6307\u6a19\u662f\u4ec0\u9ebc<\/h2>\n<p>\u7c21\u55ae\u8aaa\uff0c\u5c31\u662f\u4e00\u500b\u6307\u6a19\u6307\u5411\u7684\u8a18\u61b6\u9ad4\u5df2\u7d93\u4e0d\u5c6c\u65bc\u4f60\u4e86\uff0c<br \/>\n\u4f46\u4f60\u9084\u62ff\u8457\u90a3\u500b\u6307\u6a19\uff0c\u4ee5\u70ba\u5b83\u9084\u6709\u6548\u3002<\/p>\n<p>\u6700\u5e38\u898b\u7684\u60c5\u6cc1\u662f <code>free<\/code> \u4e4b\u5f8c\u7e7c\u7e8c\u4f7f\u7528\uff1a<\/p>\n<pre><code class=\"language-c\">uint8_t *buf = malloc(256);\n\n\/\/ \u7528\u5b8c\u4e86\uff0c\u91cb\u653e\u8a18\u61b6\u9ad4\nfree(buf);\n\n\/\/ buf \u73fe\u5728\u6307\u5411\u54ea\u88e1\uff1f\n\/\/ \u6307\u5411\u525b\u624d\u90a3\u584a\u8a18\u61b6\u9ad4\uff0c\u4f46\u90a3\u584a\u8a18\u61b6\u9ad4\u5df2\u7d93\u9084\u7d66\u7cfb\u7d71\u4e86\n\/\/ \u9019\u584a\u8a18\u61b6\u9ad4\u53ef\u80fd\u88ab\u5176\u4ed6\u5730\u65b9\u91cd\u65b0\u5206\u914d\uff0c\u4e5f\u53ef\u80fd\u9084\u6c92\u88ab\u52d5\u904e\n\n\/\/ \u274c \u7e7c\u7e8c\u4f7f\u7528 buf\uff0cundefined behavior\nbuf[0] = 0xFF;       \/\/ \u53ef\u80fd\u6539\u5230\u5176\u4ed6\u4eba\u7684\u8cc7\u6599\nprintf(&quot;%d\\n&quot;, buf[0]); \/\/ \u53ef\u80fd\u8b80\u5230\u5783\u573e\u503c\uff0c\u53ef\u80fd crash<\/code><\/pre>\n<p><code>free<\/code> \u53ea\u662f\u544a\u8a34\u7cfb\u7d71\u300c\u9019\u584a\u8a18\u61b6\u9ad4\u6211\u4e0d\u7528\u4e86\u300d\uff0c<br \/>\n\u5b83\u4e0d\u6703\u628a\u6307\u6a19\u6e05\u7a7a\uff0c<code>buf<\/code> \u9084\u662f\u6307\u5411\u90a3\u500b\u4f4d\u5740\u3002<\/p>\n<hr \/>\n<h2>\u70ba\u4ec0\u9ebc\u9019\u9ebc\u96e3 debug<\/h2>\n<p>\u61f8\u7a7a\u6307\u6a19\u6700\u6050\u6016\u7684\u5730\u65b9\uff0c\u662f\u5b83\u7684\u884c\u70ba<strong>\u4e0d\u53ef\u9810\u6e2c<\/strong>\u3002<\/p>\n<h3>\u60c5\u6cc1\u4e00\uff1a\u525b\u597d\u9084\u6c92\u88ab\u8986\u84cb<\/h3>\n<pre><code class=\"language-c\">uint8_t *buf = malloc(256);\nmemset(buf, 0xAB, 256);\nfree(buf);\n\n\/\/ \u5982\u679c\u9019\u584a\u8a18\u61b6\u9ad4\u9084\u6c92\u88ab\u91cd\u65b0\u5206\u914d\n\/\/ buf[0] \u53ef\u80fd\u9084\u662f 0xAB\nprintf(&quot;%02X\\n&quot;, buf[0]);  \/\/ \u5370\u51fa AB\uff0c\u770b\u8d77\u4f86\u300c\u6b63\u5e38\u300d<\/code><\/pre>\n<p>\u5728\u958b\u767c\u968e\u6bb5\uff0c\u9019\u7a2e\u60c5\u6cc1\u5f88\u5e38\u898b\uff0c<br \/>\n\u56e0\u70ba\u7a0b\u5f0f\u908f\u8f2f\u7c21\u55ae\uff0c\u8a18\u61b6\u9ad4\u5206\u914d\u4e0d\u983b\u7e41\uff0c<br \/>\n<code>free<\/code> \u4e4b\u5f8c\u90a3\u584a\u8a18\u61b6\u9ad4\u901a\u5e38\u9084\u6c92\u88ab\u52d5\u904e\u3002<\/p>\n<p>\u6240\u4ee5\u6e2c\u8a66\u90fd\u904e\u4e86\uff0c\u51fa\u8ca8\u4e86\u3002<\/p>\n<p>\u5230\u4e86\u5ba2\u6236\u90a3\u908a\uff0c\u7a0b\u5f0f\u8dd1\u4e45\u4e86\uff0c\u8a18\u61b6\u9ad4\u88ab\u91cd\u8907\u5206\u914d\uff0c<br \/>\n\u90a3\u584a\u8a18\u61b6\u9ad4\u88ab\u8986\u84cb\u4e86\uff0cbug \u624d\u51fa\u73fe\u3002<\/p>\n<hr \/>\n<h3>\u60c5\u6cc1\u4e8c\uff1a\u525b\u597d\u88ab\u5176\u4ed6\u4eba\u62ff\u53bb\u7528<\/h3>\n<pre><code class=\"language-c\">uint8_t *buf = malloc(256);\nfree(buf);\n\n\/\/ \u5047\u8a2d\u9019\u6642\u5019\u53e6\u4e00\u500b\u5730\u65b9\u4e5f malloc \u4e86\uff0c\u525b\u597d\u62ff\u5230\u540c\u4e00\u584a\u8a18\u61b6\u9ad4\nSomeStruct *obj = malloc(sizeof(SomeStruct));\n\n\/\/ \u73fe\u5728 buf \u548c obj \u6307\u5411\u540c\u4e00\u584a\u8a18\u61b6\u9ad4\nbuf[0] = 0xFF;  \/\/ \u4f60\u4ee5\u70ba\u5728\u5beb buf\uff0c\u5176\u5be6\u5728\u6539 obj \u7684\u5167\u5bb9\n\n\/\/ obj \u7684\u8cc7\u6599\u88ab\u6c61\u67d3\u4e86\uff0c\u4f46 obj \u7684\u7a0b\u5f0f\u78bc\u4e0d\u77e5\u9053\n\/\/ \u5f8c\u7e8c obj \u7684\u884c\u70ba\u6703\u51fa\u932f\uff0c\u4f46 crash \u7684\u4f4d\u7f6e\u8ddf buf \u5b8c\u5168\u7121\u95dc<\/code><\/pre>\n<p>\u9019\u7a2e bug \u6700\u96e3\u8ffd\uff0c\u56e0\u70ba crash \u7684\u5730\u65b9\u8ddf\u554f\u984c\u7684\u6839\u6e90\u5dee\u5f88\u9060\u3002<\/p>\n<hr \/>\n<h3>\u60c5\u6cc1\u4e09\uff1a\u5d4c\u5165\u5f0f\u7684 Warm Reset<\/h3>\n<p>\u5728\u5d4c\u5165\u5f0f\uff0c\u5982\u679c\u4f60\u7528\u7684\u662f\u975c\u614b\u5206\u914d\u7684\u8a18\u61b6\u9ad4\uff08\u4e0d\u662f heap\uff09\uff0c<br \/>\n\u61f8\u7a7a\u6307\u6a19\u7684\u554f\u984c\u66f4\u5fae\u5999\u3002<\/p>\n<pre><code class=\"language-c\">static uint8_t sensor_buf[64];\nstatic uint8_t *active_buf = NULL;\n\nvoid start_measurement(void) {\n    active_buf = sensor_buf;\n    \/\/ \u958b\u59cb\u4f7f\u7528 active_buf\n}\n\nvoid stop_measurement(void) {\n    \/\/ \u5fd8\u8a18\u6e05\u7a7a active_buf\n    \/\/ active_buf \u9084\u662f\u6307\u5411 sensor_buf\n}\n\n\/\/ Warm reset \u4e4b\u5f8c\uff0cstop_measurement \u6c92\u6709\u88ab\u547c\u53eb\n\/\/ active_buf \u9084\u662f\u6307\u5411 sensor_buf\n\/\/ \u4e0b\u6b21 start_measurement \u4e4b\u524d\u5c31\u4f7f\u7528 active_buf\uff0c\u884c\u70ba\u672a\u5b9a\u7fa9<\/code><\/pre>\n<hr \/>\n<h2>\u89e3\u6cd5\uff1a\u7528\u5b8c\u5c31\u6b78\u96f6<\/h2>\n<p>\u6700\u7c21\u55ae\u4e5f\u6700\u6709\u6548\u7684\u9632\u79a6\uff1a<\/p>\n<pre><code class=\"language-c\">free(buf);\nbuf = NULL;  \/\/ \u7acb\u523b\u6e05\u7a7a<\/code><\/pre>\n<p>\u9019\u6a23\u505a\u4e4b\u5f8c\uff0c\u5982\u679c\u4e0d\u5c0f\u5fc3\u7e7c\u7e8c\u4f7f\u7528 <code>buf<\/code>\uff1a<\/p>\n<pre><code class=\"language-c\">free(buf);\nbuf = NULL;\n\nbuf[0] = 0xFF;  \/\/ \u5b58\u53d6 NULL\uff0c\u76f4\u63a5 crash\uff08Segmentation Fault\uff09<\/code><\/pre>\n<p><strong>\u300c\u7acb\u523b crash\u300d\u6bd4\u300c\u5076\u723e\u51fa\u73fe\u5947\u602a\u884c\u70ba\u300d\u597d\u592a\u591a\u4e86\u3002<\/strong><\/p>\n<p>crash \u7684\u4f4d\u7f6e\u5c31\u662f\u554f\u984c\u7684\u6839\u6e90\uff0c<br \/>\n\u4e0d\u6703\u8b93\u932f\u8aa4\u8513\u5ef6\u5230\u5176\u4ed6\u5730\u65b9\uff0c<br \/>\ndebug \u5bb9\u6613\u5f88\u591a\u3002<\/p>\n<hr \/>\n<h2>\u5beb\u4e00\u500b\u5b89\u5168\u7684 free \u5de8\u96c6<\/h2>\n<p>\u6bcf\u6b21 <code>free<\/code> \u4e4b\u5f8c\u90fd\u8981\u8a18\u5f97\u6e05\u7a7a\uff0c<br \/>\n\u4f46\u4eba\u7e3d\u662f\u6703\u5fd8\u8a18\uff0c\u53ef\u4ee5\u7528\u5de8\u96c6\u5f37\u5236\u505a\u5230\uff1a<\/p>\n<pre><code class=\"language-c\">#define SAFE_FREE(ptr)  \\\n    do {                \\\n        free(ptr);      \\\n        (ptr) = NULL;   \\\n    } while (0)<\/code><\/pre>\n<p>\u4f7f\u7528\uff1a<\/p>\n<pre><code class=\"language-c\">uint8_t *buf = malloc(256);\n\/\/ ... \u4f7f\u7528 buf ...\nSAFE_FREE(buf);  \/\/ free \u4e26\u4e14\u6e05\u7a7a\uff0c\u4e00\u6b65\u5230\u4f4d<\/code><\/pre>\n<p>\u9019\u500b\u5de8\u96c6\u5728\u5f88\u591a\u5d4c\u5165\u5f0f\u5c08\u6848\u88e1\u90fd\u770b\u5f97\u5230\uff0c<br \/>\n\u662f\u500b\u5f88\u5be6\u7528\u7684\u5c0f\u5de5\u5177\u3002<\/p>\n<hr \/>\n<h2>\u9664\u4e86 free\uff0c\u9084\u6709\u54ea\u4e9b\u60c5\u6cc1\u6703\u7522\u751f\u61f8\u7a7a\u6307\u6a19<\/h2>\n<h3>\u60c5\u6cc1\u4e00\uff1a\u6307\u5411 stack \u8b8a\u6578\u7684\u6307\u6a19\u88ab\u5e36\u51fa\u53bb<\/h3>\n<pre><code class=\"language-c\">\/\/ \u274c \u56de\u50b3\u5340\u57df\u8b8a\u6578\u7684\u4f4d\u5740\nint *get_value(void) {\n    int local = 42;\n    return &amp;local;  \/\/ local \u5728\u51fd\u5f0f\u7d50\u675f\u5f8c\u5c31\u6d88\u5931\u4e86\n}\n\nint *ptr = get_value();\nprintf(&quot;%d\\n&quot;, *ptr);  \/\/ ptr \u6307\u5411\u5df2\u7d93\u6d88\u5931\u7684 stack \u7a7a\u9593<\/code><\/pre>\n<p>\u9019\u500b\u7de8\u8b6f\u5668\u901a\u5e38\u6703\u8b66\u544a\uff0c\u4f46\u4e0d\u4e00\u5b9a\u662f\u932f\u8aa4\u3002<\/p>\n<hr \/>\n<h3>\u60c5\u6cc1\u4e8c\uff1acallback \u88e1\u7684\u6307\u6a19\u6bd4\u7269\u4ef6\u6d3b\u5f97\u66f4\u4e45<\/h3>\n<pre><code class=\"language-c\">typedef void (*Callback)(void *data);\n\nvoid register_callback(Callback cb, void *user_data);\n\nvoid setup(void) {\n    MyObject *obj = malloc(sizeof(MyObject));\n    register_callback(my_callback, obj);\n\n    \/\/ \u67d0\u500b\u6642\u6a5f\u9ede\u91cb\u653e\u4e86 obj\n    free(obj);\n    obj = NULL;\n\n    \/\/ \u4f46 callback \u7cfb\u7d71\u9084\u5b58\u8457\u90a3\u500b\u6307\u6a19\n    \/\/ \u4e0b\u6b21 callback \u88ab\u89f8\u767c\uff0cuser_data \u5c31\u662f\u61f8\u7a7a\u6307\u6a19\n}<\/code><\/pre>\n<p>\u9019\u7a2e\u60c5\u6cc1\u5728\u4e8b\u4ef6\u9a45\u52d5\u7684\u7cfb\u7d71\u88e1\u5f88\u5e38\u898b\uff0c<br \/>\n\u8981\u7279\u5225\u6ce8\u610f\u7269\u4ef6\u7684\u751f\u547d\u9031\u671f\u548c callback \u7684\u751f\u547d\u9031\u671f\u662f\u5426\u4e00\u81f4\u3002<\/p>\n<hr \/>\n<h3>\u60c5\u6cc1\u4e09\uff1a\u591a\u500b\u6307\u6a19\u6307\u5411\u540c\u4e00\u584a\u8a18\u61b6\u9ad4<\/h3>\n<pre><code class=\"language-c\">uint8_t *buf_a = malloc(256);\nuint8_t *buf_b = buf_a;  \/\/ \u5169\u500b\u6307\u6a19\u6307\u5411\u540c\u4e00\u584a\n\nfree(buf_a);\nbuf_a = NULL;\n\n\/\/ buf_b \u9084\u662f\u6307\u5411\u90a3\u584a\u5df2\u7d93\u88ab free \u7684\u8a18\u61b6\u9ad4\n\/\/ buf_a = NULL \u6c92\u6709\u5e6b\u5230 buf_b\nbuf_b[0] = 0xFF;  \/\/ \u274c \u61f8\u7a7a\u6307\u6a19<\/code><\/pre>\n<p>\u9019\u7a2e\u60c5\u6cc1 <code>SAFE_FREE<\/code> \u4e5f\u6551\u4e0d\u4e86\uff0c<br \/>\n\u56e0\u70ba\u5b83\u53ea\u80fd\u6e05\u7a7a\u4f60\u50b3\u9032\u53bb\u7684\u90a3\u500b\u6307\u6a19\u3002<\/p>\n<p>\u89e3\u6cd5\u662f\u8a2d\u8a08\u4e0a\u907f\u514d\u591a\u500b\u6307\u6a19\u6307\u5411\u540c\u4e00\u584a\u8a18\u61b6\u9ad4\uff0c<br \/>\n\u6216\u662f\u660e\u78ba\u5b9a\u7fa9\u300c\u8ab0\u662f\u9019\u584a\u8a18\u61b6\u9ad4\u7684\u64c1\u6709\u8005\u300d\uff0c<br \/>\n\u53ea\u6709\u64c1\u6709\u8005\u53ef\u4ee5 <code>free<\/code>\u3002<\/p>\n<hr \/>\n<h2>\u7528\u5de5\u5177\u5e6b\u4f60\u627e<\/h2>\n<p>\u9760\u4eba\u5de5\u5be9\u67e5\u61f8\u7a7a\u6307\u6a19\u5f88\u7d2f\uff0c<br \/>\n\u6709\u5de5\u5177\u53ef\u4ee5\u5e6b\u5fd9\uff1a<\/p>\n<h3>Valgrind\uff08Linux\uff09<\/h3>\n<pre><code class=\"language-bash\">valgrind --leak-check=full --track-origins=yes .\/your_program<\/code><\/pre>\n<p>\u53ef\u4ee5\u627e\u5230 use-after-free\u3001double-free \u7b49\u554f\u984c\uff0c<br \/>\n\u5831\u544a\u975e\u5e38\u8a73\u7d30\uff0c\u6703\u544a\u8a34\u4f60\u54ea\u884c free\u3001\u54ea\u884c\u53c8\u7528\u4e86\u3002<\/p>\n<hr \/>\n<h3>AddressSanitizer\uff08ASan\uff09<\/h3>\n<pre><code class=\"language-bash\">gcc -fsanitize=address -g your_code.c -o your_program\n.\/your_program<\/code><\/pre>\n<p>\u57f7\u884c\u6642\u671f\u5075\u6e2c\uff0c\u767c\u73fe\u554f\u984c\u7acb\u523b\u5831\u544a\uff0c<br \/>\n\u6bd4 Valgrind \u5feb\uff0c\u9069\u5408\u5728 CI \u88e1\u8dd1\u3002<\/p>\n<pre><code>ERROR: AddressSanitizer: heap-use-after-free on address 0x602000000010\nREAD of size 1 at 0x602000000010 thread T0\n    #0 0x401234 in main your_code.c:15<\/code><\/pre>\n<hr \/>\n<h3>\u5d4c\u5165\u5f0f\u74b0\u5883<\/h3>\n<p>Valgrind \u548c ASan \u5728\u5d4c\u5165\u5f0f\u8dd1\u4e0d\u4e86\uff0c<br \/>\n\u4f46\u53ef\u4ee5\uff1a<\/p>\n<ul>\n<li>\u5728 host \u4e0a\u8dd1\u55ae\u5143\u6e2c\u8a66\uff0c\u7528 ASan \u6293\u554f\u984c<\/li>\n<li>\u7528\u975c\u614b\u5206\u6790\u5de5\u5177\uff08PC-lint\u3001Cppcheck\uff09<\/li>\n<li>\u5728 debug build \u88e1\u52a0 <code>assert(ptr != NULL)<\/code> \u9632\u79a6<\/li>\n<\/ul>\n<hr \/>\n<h2>\u8aaa\u5be6\u8a71<\/h2>\n<p>\u300c\u7528\u5b8c\u5c31\u6b78\u96f6\u300d\u9019\u500b\u7fd2\u6163\uff0c<br \/>\n\u6211\u89ba\u5f97\u6bd4\u5f88\u591a\u8a2d\u8a08\u6a21\u5f0f\u90fd\u5be6\u7528\u3002<\/p>\n<p>\u4e0d\u9700\u8981\u7279\u5225\u7684\u5de5\u5177\uff0c\u4e0d\u9700\u8981\u6539\u67b6\u69cb\uff0c<br \/>\n\u5c31\u662f\u6bcf\u6b21 <code>free<\/code> \u4e4b\u5f8c\u591a\u4e00\u884c <code>= NULL<\/code>\u3002<\/p>\n<p>\u4f46\u6211\u4e5f\u627f\u8a8d\uff0c\u9019\u500b\u7fd2\u6163\u9700\u8981\u523b\u610f\u7df4\u7fd2\uff0c<br \/>\n\u56e0\u70ba <code>free<\/code> \u5b8c\u4e4b\u5f8c\u300c\u611f\u89ba\u4e0a\u300d\u5df2\u7d93\u7d50\u675f\u4e86\uff0c<br \/>\n\u5f88\u5bb9\u6613\u5c31\u76f4\u63a5\u5f80\u4e0b\u5beb\uff0c\u5fd8\u8a18\u6e05\u7a7a\u3002<\/p>\n<p>\u6211\u73fe\u5728\u7684\u505a\u6cd5\u662f\uff0c\u628a <code>SAFE_FREE<\/code> \u8a2d\u6210 snippet\uff0c<br \/>\n\u8b93\u81ea\u5df1\u4e0d\u7528\u591a\u60f3\uff0c\u76f4\u63a5\u7528\u5de8\u96c6\uff0c<br \/>\n\u5f37\u5236\u628a\u6e05\u7a7a\u9019\u4ef6\u4e8b\u7d81\u5728 free \u88e1\u9762\u3002<\/p>\n<p>\u53e6\u5916\uff0c\u6bcf\u6b21\u770b\u5230 <code>free<\/code> \u7684\u6642\u5019\uff0c<br \/>\n\u6211\u90fd\u6703\u554f\u81ea\u5df1\uff1a\u300c\u6709\u6c92\u6709\u5176\u4ed6\u6307\u6a19\u4e5f\u6307\u5411\u9019\u584a\u8a18\u61b6\u9ad4\uff1f\u300d<\/p>\n<p>\u9019\u500b\u554f\u984c\u6c92\u6709\u5de5\u5177\u53ef\u4ee5\u81ea\u52d5\u56de\u7b54\uff0c<br \/>\n\u53ea\u80fd\u9760\u8a2d\u8a08\u7684\u6642\u5019\u628a\u8a18\u61b6\u9ad4\u6240\u6709\u6b0a\u60f3\u6e05\u695a\u3002<\/p>\n<hr \/>\n<h2>\u9019\u7bc7\u7684 Checklist<\/h2>\n<ul>\n<li>[ ] \u6bcf\u6b21 <code>free<\/code> \u4e4b\u5f8c\u6709\u7acb\u523b\u628a\u6307\u6a19\u8a2d\u70ba <code>NULL<\/code><\/li>\n<li>[ ] \u4f7f\u7528 <code>SAFE_FREE<\/code> \u5de8\u96c6\u907f\u514d\u5fd8\u8a18<\/li>\n<li>[ ] \u6c92\u6709\u56de\u50b3\u5340\u57df\u8b8a\u6578\u7684\u4f4d\u5740<\/li>\n<li>[ ] Callback \u7684 <code>user_data<\/code> \u751f\u547d\u9031\u671f\u6709\u8003\u616e\u6e05\u695a<\/li>\n<li>[ ] \u591a\u500b\u6307\u6a19\u6307\u5411\u540c\u4e00\u584a\u8a18\u61b6\u9ad4\u6642\uff0c\u6709\u660e\u78ba\u5b9a\u7fa9\u64c1\u6709\u8005<\/li>\n<li>[ ] \u5728 host \u7aef\u7684\u6e2c\u8a66\u6709\u958b ASan \u6216\u7528 Valgrind \u8dd1\u904e<\/li>\n<li>[ ] \u4f7f\u7528\u6307\u6a19\u524d\u6709\u6aa2\u67e5\u662f\u5426\u70ba <code>NULL<\/code><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u6709\u4e00\u7a2e bug\uff0c\u6211\u53ea\u8981\u60f3\u5230\u5c31\u982d\u76ae\u767c\u9ebb\u3002 \u660e\u660e\u7a0b\u5f0f\u8dd1\u5f97\u597d\u597d\u7684\uff0c\u7a81\u7136\u5728\u67d0\u500b\u5b8c\u5168\u4e0d\u76f8\u95dc &hellip; <a href=\"https:\/\/hsiang.cc\/?p=865\">\u95b1\u8b80\u5168\u6587 <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[15],"tags":[991,992,912,922,979,989,988,990,993,857,919,987,592,917],"class_list":{"0":"post-865","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-prog","7":"tag-addresssanitizer","8":"tag-cdebug","9":"tag-c","13":"tag-dangling-pointer","14":"tag-free","15":"tag-safe_free","16":"tag-use-after-free","18":"tag-987","19":"tag-592","20":"tag-917"},"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/hsiang.cc\/index.php?rest_route=\/wp\/v2\/posts\/865","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hsiang.cc\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hsiang.cc\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hsiang.cc\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hsiang.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=865"}],"version-history":[{"count":2,"href":"https:\/\/hsiang.cc\/index.php?rest_route=\/wp\/v2\/posts\/865\/revisions"}],"predecessor-version":[{"id":867,"href":"https:\/\/hsiang.cc\/index.php?rest_route=\/wp\/v2\/posts\/865\/revisions\/867"}],"wp:attachment":[{"href":"https:\/\/hsiang.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=865"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hsiang.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=865"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hsiang.cc\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=865"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}