CODEWITHSUNDEEP
c++
naveen
naveen

Reputation: 21

Modification libstdc++-v3 in file ios_init.cc

I want to modify ios_init.cc so that cout output will not be shown on the screen. I do not have option to recompile the binary.

I am trying in ios_base::Init::Init().

Does anyone have the knowledge as to what exactly I need to comment out.

Upvotes: 0

Views: 83

Answers (1)

johnsyweb
johnsyweb

Reputation: 141860

You don't want to modify any Standard Library file!

You want to stop std::cout updating the console. You can do this by redirecting std::cout. The example to which I linked redirects to a file, but you can easily modify it to redirect to nowhere:

#include <iostream>

class scoped_cout_silencer
{
public:
    scoped_cout_silencer()
        :backup_(std::cout.rdbuf())
    {
        std::cout.rdbuf(NULL);
    }

    ~scoped_cout_silencer()
    {
        std::cout.rdbuf(backup_);
    }

private:
    scoped_cout_silencer(const scoped_cout_silencer& copy);
    scoped_cout_silencer& operator =(const scoped_cout_silencer& assign);

    std::streambuf* backup_;
};

int main()
{
    std::cout << "Now you see me." << std::endl;
    {
        scoped_cout_silencer silence;
        std::cout << "Now you don't." << std::endl;
    }
    std::cout << "Now you see me." << std::endl;
}

See it run!

Upvotes: 3

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