:__cxa_init_primary_exception [/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.30] 1,700,000 ( 0.15%) Cjia_demo3_Performance.cpp:fun2_throwError() [/home/project/1_demo/PracticeDEMO/example/TryDemo/Cjia_demo3_Perfor
//代码示例1#include<iostream>#include<algorithm>#include<cstdio>#include<cstdlib>#include<cstring>usingnamespacestd;voidSthWrongInside(){intc;cin>>c;if(c>=255){interror=255;throw(error);}return;}intmain(){try{SthWrongInside();}catch(interror){printf("error:%d\n",error);}return0;} 这...
Return Value Returns 0 after saving the stack environment. If setjmp returns as a result of a longjmp call, it returns the value argument of longjmp, or if the value argument of longjmp is 0,setjmp returns 1. There is no error return. Restores stack environment and execution locale. 代码语...
代码语言:cpp 复制 if (some_condition) { throw std::runtime_error("An error occurred"); } 在这个例子中,std::runtime_error是一个异常类,用于表示运行时错误。当some_condition为true时,将抛出一个std::runtime_error对象,该对象包含错误消息"An error occurred"。 throw ex:当使用throw ex...
cpp throw std::runtime_error("An error occurred"); 描述异常抛出后的程序流程: 当throw语句被执行时,程序会立即中断当前函数的执行,并开始寻找匹配的catch块来处理这个异常。如果没有找到匹配的catch块,程序会终止,并可能调用默认的异常处理程序(通常是std::terminate)。 提供一个简单的C++代码示例,演示如何...
zxing-cpp throw zxing::error when read this barcode, is it expected? Is it possible to return 0 barcodes without throw exception?Activity axxelclosed this as completedin 3adaebcon Apr 8, 2025 axxel commented on Apr 8, 2025 axxel on Apr 8, 2025 Collaborator Thanks for bringing this to...
stdex:Error 根据代码可以知道,这个输出意味着动态库里throw的Error没有被正确接住,向上转换到std::exception才被接住,但捕获的异常还是保持了正确的多态性,what() 返回了期望的结果。 而如果在app.cpp里主动throw Error{},Error又能被正确地接住。显然这个问题跟跨越二进制边界有关,可问题到底出在哪了呢? 首先排...
(0); //异常// 异常处理操作步骤2try{int num = 9999;func(num); // 接受异常}catch (const char *error){// 处理异常std::cout << error;}catch (int errorNum){//抛出异常接受到整型std::cout << "异常数值:" << errorNum;}catch (...){// 捕获所有异常:匹配性能最差,捕获性能最强std::...
/home/me/my_proj/main.cpp: In member function \xe2\x80\x98std::string ConfigFile::getClassifierExtractorType()\xe2\x80\x99:\n/home/me/my_proj/main.cpp:79:96: error: no matching function for call to \xe2\x80\x98MyException::MyException(std::string)\xe2\x80\x99\n throw MyException(foo...
voidf();// error, now the ES matters }; 2. 对throw语法的(错误)理解 很多人认为throw表示下面的意思: 1. Guarantee that functions will only throw listed exceptions (possibly none). 2. Enable compiler optimizations based on the knowledge that only listed exceptions (possibly none) will be thro...