On 2017-05-02 00:08 -0400, Papa wrote:
> COLLECT_GCC=C:\gnu\mingw-w64\mingw64\bin\g++.exe
> COLLECT_LTO_WRAPPER=C:/gnu/mingw-w64/mingw64/bin/../libexec/gcc/x86_64-w64-mingw32/6.3.0/lto-wrapper.exe
> Target: x86_64-w64-mingw32
> OS: Win 8.1
> class myClass{
> private:
> std::locale current_locale;
> public:
> void setGlobalLocale(const std::string& str) {
> current_locale.global(std::locale(str.data()));
> //<<Segmentation fault>>
Are you sure this is a segfault?
> }
> };
>
>
> On 01-May-2017 11:57 PM, Papa wrote:
> > COLLECT_GCC=C:\gnu\mingw-w64\mingw64\bin\g++.exe
> > COLLECT_LTO_WRAPPER=C:/gnu/mingw-w64/mingw64/bin/../libexec/gcc/x86_64-w64-mingw32/6.3.0/lto-wrapper.exe
> >
> > Target: x86_64-w64-mingw32
> > OS: Win 8.1
> > class{
> > private:
> > std::locale current_locale;
> > public:
> > void setGlobalLocale(const std::string& str) {
> > current_locale.global(std::locale(str)); //<< RunTimeError>>
> > }
> > };
> >
> > I'm writing a wrapper for std::locale, but right at start-up the first
> > problem.
> > Why would this member function give me a Run Time Error?
> >
> > Any help is much appreciated.
> >
Currently libstdc++ only supports "C" locale on Windows.
See <http://gcc.gnu.org/ml/libstdc++/2003-02/msg00345.html>.
If you are trying to create a std::locale which is not "C", you'll likely
get
> terminate called after throwing an instance of 'std::runtime_error'
> what(): locale::facet::_S_create_c_locale name not valid
Windows has some strange undocumented APIs for manipulating
locales. So it's difficult to implement std::locale for Windows.
--
Xi Ruoyao <ryxi@xxxxxxxxxxxxxxxxx>
School of Aerospace Science and Technology, Xidian University
