🐛 fixing #359

src/json.hpp

@@ -122,26 +122,6 @@ struct has_mapped_type
         std::is_integral<decltype(detect(std::declval<T>()))>::value;
 };
 
-/*!
-@brief helper class to create locales with decimal point
-
-This struct is used a default locale during the JSON serialization. JSON
-requires the decimal point to be `.`, so this function overloads the
-`do_decimal_point()` function to return `.`. This function is called by
-float-to-string conversions to retrieve the decimal separator between integer
-and fractional parts.
-
-@sa https://github.com/nlohmann/json/issues/51#issuecomment-86869315
-@since version 2.0.0
-*/
-struct DecimalSeparator : std::numpunct<char>
-{
-    char do_decimal_point() const
-    {
-        return '.';
-    }
-};
-
 }
 
 /*!
@@ -2201,8 +2181,7 @@ class basic_json
     {
         std::stringstream ss;
         // fix locale problems
-        const static std::locale loc(std::locale(), new DecimalSeparator);
-        ss.imbue(loc);
+        ss.imbue(std::locale::classic());
 
         // 6, 15 or 16 digits of precision allows round-trip IEEE 754
         // string->float->string, string->double->string or string->long
@@ -5829,7 +5808,7 @@ class basic_json
         o.width(0);
 
         // fix locale problems
-        const auto old_locale = o.imbue(std::locale(std::locale(), new DecimalSeparator));
+        const auto old_locale = o.imbue(std::locale::classic());
         // set precision
 
         // 6, 15 or 16 digits of precision allows round-trip IEEE 754

src/json.hpp.re2c

@@ -122,26 +122,6 @@ struct has_mapped_type
         std::is_integral<decltype(detect(std::declval<T>()))>::value;
 };
 
-/*!
-@brief helper class to create locales with decimal point
-
-This struct is used a default locale during the JSON serialization. JSON
-requires the decimal point to be `.`, so this function overloads the
-`do_decimal_point()` function to return `.`. This function is called by
-float-to-string conversions to retrieve the decimal separator between integer
-and fractional parts.
-
-@sa https://github.com/nlohmann/json/issues/51#issuecomment-86869315
-@since version 2.0.0
-*/
-struct DecimalSeparator : std::numpunct<char>
-{
-    char do_decimal_point() const
-    {
-        return '.';
-    }
-};
-
 }
 
 /*!
@@ -2201,8 +2181,7 @@ class basic_json
     {
         std::stringstream ss;
         // fix locale problems
-        const static std::locale loc(std::locale(), new DecimalSeparator);
-        ss.imbue(loc);
+        ss.imbue(std::locale::classic());
 
         // 6, 15 or 16 digits of precision allows round-trip IEEE 754
         // string->float->string, string->double->string or string->long
@@ -5829,7 +5808,7 @@ class basic_json
         o.width(0);
 
         // fix locale problems
-        const auto old_locale = o.imbue(std::locale(std::locale(), new DecimalSeparator));
+        const auto old_locale = o.imbue(std::locale::classic());
         // set precision
 
         // 6, 15 or 16 digits of precision allows round-trip IEEE 754