[MinGW-notify] [ mingw-Bugs-3413241 ] `to_string` is not a member of `std`

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Bugs item #3413241, was opened at 2011-09-23 02:53
Message generated for change (Comment added) made by earnie
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https://sourceforge.net/tracker/?func=detail&atid=102435&aid=3413241&group_id=2435

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Category: gcc
>Group: Aged issue
>Status: Pending
Resolution: None
Priority: 5
Private: No
Submitted By: kartfish (kartfish)
Assigned to: Nobody/Anonymous (nobody)
Summary: `to_string` is not a member of `std`

Initial Comment:
Hello all.
gcc --version: gcc.exe (GCC) 4.6.1
mingw-get --version: mingw-get version 0.3-alpha-2.1

$ g++ to_string.cpp -o to_string.exe -std=c++0x
to_string.cpp: In function 'int main(int, char**)':
to_string.cpp:5:23: error: 'to_string' is not a member of 'std'

Source code (to_string.cpp):

#include <iostream>
#include <string>

int main(int argc, char **argv) {
	std::string number = std::to_string(42);
	std::cout << number << std::endl;
	return 0;
}


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>Comment By: Earnie Boyd (earnie)
Date: 2012-10-23 05:47

Message:
Still unresolved at GCC.  This is dependent on the GCC issue.

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Comment By: eXpl0it3r (expl0it3r)
Date: 2012-09-13 12:27

Message:
Bug did already exist as well, cross referencing:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52015

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Comment By: Earnie Boyd (earnie)
Date: 2012-09-13 09:49

Message:
It would be better to report this to the GCC bugs list.  Currently we do
not have a member working on upstream GCC.

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Comment By: eXpl0it3r (expl0it3r)
Date: 2012-09-13 08:14

Message:
Forgot to add the authors name and a mirror to the files.

Author: Julian Smythe
Mirror: http://my-gate.net/pub/mingw-to-string-gcc47.zip

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Comment By: eXpl0it3r (expl0it3r)
Date: 2012-09-13 08:11

Message:
Unfortunately this issue still exists after one year...
With Google I've found that someone has written a fix for MinGW 4.7.0 and
it works flawlessly.
http://tehsausage.com/mingw-to-string

And since I don't know how long that website will be up, I'll add the
explanation here with the files:
_______________________________________

24 August 2012, 11:16 UTC
This patch enables the following list of C++11 functions and templates in
the std namespace:
stoi, stol, stoul, stoll, stof, stod, stold, to_string, to_wstring

This assumes you are using the official MinGW distribution.
If you are applying this patch to a version of MinGW GCC later than 4.7,
you should examine and apply the patches rather than using the zip file.

* Download mingw-to-string-gcc47.zip which contains three patched header
files.
  (Original patches: wchar.h, stdio.h, os_defines.h)

* Copy wchar.h and stdio.h from the include directory in the zip file to
the following directory (overwrite):
  C:\mingw\include
  (replace C:\mingw\ with the appropriate directory)

* Copy os_defines.h to the following directory (overwrite):
  C:\mingw\lib\gcc\mingw32\4.7.0\include\c++\mingw32\bits
  (replace C:\mingw\ with the appropriate directory)
  (replace 4.7.0 with the correct version number)


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Comment By: kartfish (kartfish)
Date: 2011-09-24 00:19

Message:
Correction:
file:
\lib\gcc\mingw32\4.6.1\include\c++\mingw32\bits\os_defines.h

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Comment By: kartfish (kartfish)
Date: 2011-09-24 00:17

Message:
After digging deeper, the problem is caused by the file/macro:
\lib\gcc\mingw32\4.6.1\include\c++\mingw32\bits
#define _GLIBCXX_HAVE_BROKEN_VSWPRINTF 1 

Of course merely commenting this out doesn't fix the issue.
The compiler complains about not finding some vswprintf function.

Also this comment:
// See  libstdc++/37522.
reveals that this bug is from 2008, GCC 4.4.0. Time to fix it?


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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=102435&aid=3413241&group_id=2435