What does the presence or absence of __STDC_ISO_10646__ indicate exactly? I found this part of the C99 spec obscure.
For instance, the macOS clang environment does not define this symbol. Is their implementation of wchar_t or <wctype.h> lacking some aspect of Unicode support?
For instance, the macOS clang environment does not define this symbol. Is their implementation of wchar_t or <wctype.h> lacking some aspect of Unicode support?