[libcxx-dev] locale decimal point

[Marshall Clow via libcxx-dev]

>
> On Fri, Jun 28, 2019 at 7:45 AM Steven Lengieza via libcxx-dev <
> libcxx-dev at lists.llvm.org> wrote:
> Hi,
>
> I am using the following lines of code to get a locale-specific decimal
> point however, it is causing a crash. I am unable to find any libc++
> specific documentation for using std::locale but according to the STL an
> empty string should always be a valid locale. Does this indicate a bug in
> the libc++ implementation or are we doing something wrong?
>
>
>       std::locale my_locale("");
>       const std::moneypunct<char>& mp =
>           std::use_facet<std::moneypunct<char>>(my_locale);
>       text += mp.decimal_point();
>

When I paste that into a program, add the correct includes, declare text as
a string, it works fine. (and prints '.')
What version of clang are you using, what system, what C library, etc?

#include <locale>
#include <iostream>
#include <string>

int main () {
      std::locale my_locale("");
      const std::moneypunct<char>& mp =
          std::use_facet<std::moneypunct<char>>(my_locale);
      std::string text;
      text += mp.decimal_point();
std::cout << "'" << text << "'" << std::endl;
}

-- Marshall
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