[Mingw-users] Re: ANNOUNCEMENT: GCC-3.4.1 release candidate

[Martin F. <mar...@gm...>]

Hello,

I found some problems of the new 3.4.1 release version with stdlibc++
headers and Unicode string constants. Here is a little example:


#include <string>

using namespace std;

main()
{
	wchar_t buffer[] =3D {'1', ' ', 'x', 'x', 'x', '2', '3', '\0'};
	const wchar_t cmp_string[] =3D {'x', 'x', 'x', '\0'};

	wcsstr(buffer, L"xxx");
	wcsstr(buffer, cmp_string);
}

When trying to compile the second call to std::wcsstr() with L"..." string
constant, I get the following error message from g++:

wcsstr-test.cpp: In function `int main()':
wcsstr-test.cpp:10: error: call of overloaded `wcsstr(wchar_t[8], const wch=
ar_t[4])' is ambiguous
E:/MinGW/bin/../lib/gcc/mingw32/3.4.1/../../../../include/string.h:119: not=
e: candidates are: wchar_t* wcsstr(const wchar_t*, const wchar_t*)
E:/MinGW/bin/../lib/gcc/mingw32/3.4.1/../../../../include/c++/3.4.1/cwchar:=
227:
note:                 wchar_t* std::wcsstr(wchar_t*, wchar_t*)


This example works with the previous version g++ 3.4.0.


The problem seems to be related with the following changed precompiler swit=
ch in
include/c++/3.4.1/cwchar(140):

#if _GLIBCXX_USE_WCHAR_T || _GLIBCXX_USE_WSTRING


In version 3.4.0 it's only:

#if _GLIBCXX_USE_WCHAR_T


Regards,

   Martin