// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2170.html // { dg-do compile { target c++11 } } // { dg-options "-fextended-identifiers" } int main() { "\u0041"; // 'A' UCN is OK in string literal '\u0041'; // also OK in character literal int c\u0041c; // { dg-error "not valid in an identifier" } int c\u0024c; // $ is OK; not part of basic source char set U"\uD800"; // { dg-error "not a valid universal character" } }