C++ under Windows ("stoi" under MinGW)

[Stefan Ram]

It seems that one cannot call »::std::stoi« under MinGW because it
will break existing programs using the Windows versions of [v]swprintf.

Well, if I do not want to use Windows functions, but just want to
run portable C++ code, what can I do under Windows?

Can one download a recent g++ executable for the Windows command
line (it does not have to support special Windows libaries)?

Is there an explanantion how to call the existing g++.exe of MinGW
to use it as a plain C++ compiler without the Windows support of MinGW?

I just want to run portable C++ code under Windows,
and without »::std::stoi« it's not C++.

 

[Öö Tiib]

It seems that one cannot call »::std::stoi« under MinGW because it
will break existing programs using the Windows versions of [v]swprintf.

Can you explain what is the issue and what has std::vswprintf to do
with std::stoi?

If there is some defect somewhere in library of some implementation
then you can report it to makers of library of implementation.

(May be it was just me but) I did not understand what you are complaining.

 

[Stefan Ram]

Can you explain what is the issue and what has std::vswprintf to do
with std::stoi?

There already are dozens of web pages about this issue.
The bug report was closed long ago, but the problem persists.

 

[Öö Tiib]

There already are dozens of web pages about this issue.
The bug report was closed long ago, but the problem persists.

Yes I see that there is closed/fixed bug like that:

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37522

They say that they fixed it and how they did and I don't understand what
is the issue.

 

[K. Frank]

Hi Stefan!

There already are dozens of web pages about this issue.
The bug report was closed long ago, but the problem persists.

I don't see any problem with naive use of stoi and mingw-w64.

== stoi_tst.cpp ==

#include <iostream>
#include <string>

int main (int argc, char* argv[]) {
std::string s123{" 123 "};
int i123 = std::stoi (s123);
std::cout << "i123 = " << i123 << std::endl;
}


C:\> g++ --version
g++ (rubenvb-4.8-stdthread) 4.8.1 20130324 (prerelease)

C:\> g++ -std=gnu++11 -o stoi_tst stoi_tst.cpp

C:\> stoi_tst
i123 = 123


More detail about the problem you're seeing would be
helpful. (And if we can't resolve your problem easily,
it would probably make sense to address further questions
to the mingw (or mingw-w64) mailing list.)


Good luck.


K. Frank

 

[Stefan Ram]

More detail about the problem you're seeing would be
helpful. (And if we can't resolve your problem easily,
it would probably make sense to address further questions
to the mingw (or mingw-w64) mailing list.)

The problem exists only with the 32-bit version of MinGW.
But in the meantime I found a solution. I am now using
»TDM-GCC« which does not have the problem. Thanks for all
the answers here in the newsgroup!