GCC recently (version 4.9) gainedUndefined Behavior Sanitizer(ubsan), a run-time checker for the C and C++ languages. In order to check your program with ubsan, compile and link the program with-fsanitize=undefinedoption. Such instrumented binaries have to be executed; if ubsan detects any pro...
-fsanitize=address选项:启用 AddressSanitizer,用于检测内存越界和使用释放后内存错误。 -fsanitize=thread选项:启用 ThreadSanitizer,用于检测数据竞争错误。 -fsanitize=leak选项:启用 LeakSanitizer,用于检测内存泄漏。 -fsanitize=undefined选项:启用 UndefinedBehaviorSanitizer,用于检测各种未定义行为。 步骤: 编译源文件时...
1.1.3 fsanitize=leak -fsanitize=leak:使用 LeakSanitizer(LSan)工具,它可以检测程序中的内存泄漏。 #include<iostream>usingnamespacestd;voidfun(){int*a=newint();}intmain(){fun();return0;} 1.1.4 fsanitize=undefined -fsanitize=undefined:使用 UndefinedBehaviorSanitizer(UBSan)工具,它可以检测代码中的...
具体来说,错误发生在尝试向vector添加元素时,由于偏移量过大,导致无符号整数溢出。这通常发生在vector的容量不足以容纳新元素时,而vector尝试重新分配内存并移动现有元素到新位置的过程中。 2. 错误位置 错误发生在stl_vector.h文件的第1131行,这是STL库的内部实现细节。由于我们无法直接访问或修改STL库的源代码,...
UndefinedBehaviorSanitizer 提供新的 sanitization 選項:-fsanitize=bounds-strict,可以打開嚴格的 array bounds 檢查。 特別是,它同時啟用了fsanitize=bounds和 instrumentation of flexible array member-like arrays。 Type-based alias 的分析現在能夠更清楚地處理不同指標的存取行為。在高階的 C/C++ 程式中大約改善了...
UndefinedBehaviorSanitizer gained a few new sanitization options Pointer Bounds Checker, a bounds violation detector, has been added and can be enabled via -fcheck-pointer-bounds. Memory accesses are instrumented with run-time checks of used pointers against their bounds to detect pointer bounds violat...
这个错误信息表明在代码执行过程中发生了未定义行为,特别是在使用std::vector的过程中。错误的关键在于“addition of unsigned offset to … overflowed”,这意味着你试图对一个指针进行操作,但这个操作导致了溢出。 要解决这个问题,你可以考虑以下几个方面: ...
Enable UndefinedBehaviorSanitizer, a fast undefined behavior detector. Various computations are instrumented to detect undefined behavior at runtime. Current suboptions are: -fsanitize=shift This option enables checking that the result of a shift operation is not undefined. Note that what exactly is ...
Enable UndefinedBehaviorSanitizer, a fast undefined behavior detector. Various computations are instrumented to detect undefined behavior at runtime. Current suboptions are: -fsanitize=shift This option enables checking that the result of a shift operation is not undefined. Note that what exactly is ...
未定义行为检测(UndefinedBehaviorSanitizer) gcc -fsanitize=undefined -o main main.c ./main 复制代码 线程错误检测(ThreadSanitizer) gcc -fsanitize=thread -o main main.c ./main 复制代码 5. 使用clang-tidy clang-tidy是一个基于Clang的静态分析工具,提供了比GCC更丰富的代码检查功能。你可以先安装clang-...