C++11 正则表达式std::regex_replace崩溃，为什么？

[布鲁克零三四四]

为什么崩溃？奇怪（VS2012 Update5测试）

		std::string contents = "begin\r\n\r\r\n\
			aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\
			bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\
			ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc\
			dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd\
			eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee\
			ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff	\
			ggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg\
			hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh\
			sssssssssssssssssssssssssssssssssssssssssssssssssssssssssss end";
		std::regex rg( "begin(.|\\r|\\n)*end") ;
		std::string ret = std::regex_replace( contents , rg , "" ); //为什么这里崩溃

[赵4老师]

#include <string>
#include <regex>
#include <iostream>
int main() {
    std::string contents = "Abegin\r\n\r\r\n"
       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
       "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"
       "ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc"
       "dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd"
       "eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee"
       "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
       "ggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg"
       "hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh"
       "sssssssssssssssssssssssssssssssssssssssssssssssssssssssssss endB";
    std::regex rg(std::string("begin(.|\\r|\\n)*end")) ;
    std::string ret = std::regex_replace( contents , rg , std::string("") );
    std::cout<<ret<<std::endl;//AB
    return 0;
}

[paschen]

http://en.cppreference.com/w/cpp/regex/regex_replace

[布鲁克零三四四]

引用 1 楼 zhao4zhong1 的回复:

#include <string>
#include <regex>
#include <iostream>
int main() {
    std::string contents = "Abegin\r\n\r\r\n"
       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
       "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"
       "ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc"
       "dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd"
       "eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee"
       "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
       "ggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg"
       "hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh"
       "sssssssssssssssssssssssssssssssssssssssssssssssssssssssssss endB";
    std::regex rg(std::string("begin(.|\\r|\\n)*end")) ;
    std::string ret = std::regex_replace( contents , rg , std::string("") );
    std::cout<<ret<<std::endl;//AB
    return 0;
}

空项目复制进去，还是崩溃了，怎么办？

引用 1 楼 zhao4zhong1 的回复:

#include <string>
#include <regex>
#include <iostream>
int main() {
    std::string contents = "Abegin\r\n\r\r\n"
       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
       "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"
       "ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc"
       "dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd"
       "eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee"
       "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
       "ggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg"
       "hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh"
       "sssssssssssssssssssssssssssssssssssssssssssssssssssssssssss endB";
    std::regex rg(std::string("begin(.|\\r|\\n)*end")) ;
    std::string ret = std::regex_replace( contents , rg , std::string("") );
    std::cout<<ret<<std::endl;//AB
    return 0;
}

空项目复制进去，还是崩溃了，怎么办？

[布鲁克零三四四]

换了vs2015还是崩溃，就这点代码，已经试了三个小时了就是无法解决崩溃问题唉，怎么改都没用

[赵4老师]

我用的是VS2010

[赵4老师]

请一字不差地将以下内容放在ConsoleApplication1.cpp中，将其它所有.h,.cpp,.txt从项目中移除。再试试。

#include <string>
#include <regex>
#include <iostream>
using namespace std;
int main() {
    string contents = string("Abegin\r\n\r\r\n"
       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
       "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"
       "ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc"
       "dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd"
       "eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee"
       "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
       "ggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg"
       "hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh"
       "sssssssssssssssssssssssssssssssssssssssssssssssssssssssssss endB");
    regex rg(string("begin(.|\\r|\\n)*end")) ;
    string ret = regex_replace( contents , rg , string("") );
    cout<<ret<<endl;//AB
    return 0;
}

[赵4老师]

重建所有