This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 112e. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
The treatment of character literals containing universal-character-names is not clear. It is reasonable to conclude from 5.13.5 [lex.string] paragraph 15 that if a character named by a UCN cannot be represented by a single character in the runtime character set, it becomes a multibyte character and thus such a character literal is a multicharacter literal, with type int and an implementation-defined value. It would be nice if 5.13.3 [lex.ccon] had the complete story by itself or at least a reference to 5.13.5 [lex.string] for the details.
Rationale (February, 2012):
This issue is a duplicate of issue 912.