Assertion Failed!: MSVCP140D.dll , Expression: ploc->_Mbcurmax == 1 || ploc->_Mbcurmax == 2

[himajin100000]

the code reaches before this line, but does not reach after this line

https://github.com/boostorg/locale/blob/7cfa65b2b8114afe44c7a950553620133cd5df15/src/std/std_backend.cpp#L152


I tried

std::cout << typeid(name.c_str()).name() << std::endl;

and the terminal showed

char const * __ptr64

though I'm not sure I'm doing the investigation correctly.