Undefined reference to symbol X509_freeundefined-reference-to-symbol-x509-freeUndefined reference to symbol X509_free 编译错误的解决方法：链接库中增加 -lcrypto，而非 -lcrypt参考：https: stackoverflow com questions 33215936 undefined-reference-to-symbol-x509-freeUndefined refer...

【解决】eclipse新建项目报错：overlaps the location of another project: 'xxx'eclipse-error-overlaps-the-location-of-another-projectEclipse新建项目时报错：overlaps the location of another project: & 39;xxx& 39;，确保workspace下没有重复的工程，但之前曾经添加并删...

gcc自带内存泄漏、内存越界检测工具 - asangcc-asanasan内存异常检测工具，功能类似valgrind，不过是gcc自带的原生工具，使用起来非常简单，只需要链接时加上 -lasan 即可。（编译选项也可以加上 -fsanitize=address）测试代码如 asan内...

编译错误 error: ISO C++ forbids declaration of ‘xxx’ with no type [-fpermissive]error-iso-c-forbids-declaration-of-with-no-type比较可能的情况1：函数没有写返回类型，加上返回类型后编译成功。 ifndef ttTree_h define ttTree_hclass ttTree {public: ttTree(void); int ...

编译错误 error: ‘typeof’ cannot be used as a functionerror-typeof-cannot-be-used-as-a-function编译一些开源的C项目，发现typeof关键字不能被识别，报错：error: ‘typeof’ cannot be used as a function。解决方法：修改C编译选项 -std=gnu99，使用GNU99 ...

eclipse cdt 运行程序时添加依赖库路径eclipse-cdt-ld-library-path我们知道Linux即使依赖库和可执行文件在同一目录下，如果不使用 LD_LIBRARY_PATH 指定库路径（即当前目录）的话，仍然会报加载不到依赖库的错误。那么Eclipse CDT也是类似，...

...扩展。即将到来的下一个版本的C++标准c++0x会包括它，以及一些语言本身的扩充。tr1包括大家期待已久的smart pointer，正则表达式以及其他一些支持范型编程的东东。草案阶段，新增的类和模板的名字空间是std::tr1。 stl tr1

namespace “std” has no member “clamp”namespace-std-has-no-member-clamperror: ‘clamp’ is not a member of ‘std’namespace std has no member clampC++17特性，加编译选项 -std=c++17error: ‘clamp’ is not a member of ‘std’ namespace “std” h...

【解决】asan runtime does not come first in initial library listasan-issue-with-asan-library-loading报错信息：ASan runtime does not come first in initial library list; you should eitherlink runtime to your applicationor manually preload it with L 报错信息： ASan runtime does not com...

【解决】munmap_chunk(): invalid pointermunmap_chunk-invalid-pointer原因：new malloc出来的指针被覆盖掉了，然后delete free就会报这个错误。例如：char* word = (char*)malloc(10);word = "abc"; 应使用 strcpy(word, "abc");free(word) 原因：new/malloc出来的指针被...