Compiler Error C3872
'char': this character is not allowed in an identifier
The compiler does not allow a universal character name (UCN) if the hex value is less than 0x20 or in the range 0x7F-0x9F. The UCN cannot designate a character in the basic source character set, and UCNs are not allowed in identifiers.
The following sample generates C3872:
// C3872.cpp
int main() {
int \u0040; // C3872, in base char set
}