[英]Unable to catch a std::runtime_error
Maybe I haven't had enough coffee today. 也许我今天没有喝咖啡。 The following program should catch the std::runtime_error and print "i caught the runtime_error", right?
以下程序应捕获std :: runtime_error并显示“我捕获了runtime_error”,对吗?
It is not. 它不是。 This program is not catching the std::runtime_error and is instead printing "why was i unable to catch the runtime_error"?
该程序未捕获std :: runtime_error,而是显示“为什么我无法捕获runtime_error”?
What am I doing wrong here? 我在这里做错了什么? Why am I not catching the std::runtime_error?
为什么我没有赶上std :: runtime_error?
This is Clang (see environment info below code). 这是Clang(请参见下面的代码,环境信息)。
#include <iostream>
#include <exception>
int main(int argc, const char * argv[])
{
try
{
throw new std::runtime_error( "a runtime_error was thrown" );
}
catch ( const std::runtime_error& e )
{
std::cout << "i caught the runtime_error" << std::endl;
}
catch ( ... )
{
std::cout << "why was i unable to catch the runtime_error?" << std::endl;
}
return 0;
}
Xcode 5.1.1 on OS X 10.9.5 OS X 10.9.5上的Xcode 5.1.1
comp:~ usrn$ clang --version
Apple LLVM version 5.1 (clang-503.0.38) (based on LLVM 3.4svn)
Target: x86_64-apple-darwin13.4.0
Thread model: posix
comp:~ usern$
You're throwing new std::runtime_error( "a runtime_error was thrown" );
您正在抛出
new std::runtime_error( "a runtime_error was thrown" );
, ,
So you're throwing a std::runtime_error*
. 因此,您将抛出
std::runtime_error*
。
You probably want to do throw std::runtime_error("...")
, ie throw by value. 您可能想要
throw std::runtime_error("...")
,即按值抛出。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.