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* implement a private state for the uchar.h functionsJens Gustedt2014-11-151-0/+2
| | | | | | | | | | | | | | | | | | | | | | The C standard is imperative on that: 7.28.1 ... If ps is a null pointer, each function uses its own internal mbstate_t object instead, which is initialized at program startup to the initial conversion state; and these functions are also not supposed to implicitly use the state of the wchar.h functions: 7.29.6.3 ... The implementation behaves as if no library function calls these functions with a null pointer for ps. Previously this resulted in two bugs. - The functions c16rtomb and mbrtoc16 would crash when called with ps set to null. - The function mbrtoc32 used the private state of mbrtowc, which it is not allowed to do.
* implement uchar.h (C11 UTF-16/32 conversion) interfacesRich Felker2014-10-131-0/+28