1 /* { dg-do compile { target c++17 } } */ 2 3 const static char c0 = u8''; // { dg-error "empty character" } 4 const static char c1 = u8'ab'; // { dg-warning "multi-character character constant" } 5 const static char c2 = u8'\u0124'; // { dg-warning "multi-character character constant" } 6 const static char c3 = u8'\U00064321'; // { dg-warning "multi-character character constant" } 7