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.
C has rejected the notion of attributes, and introduced the noreturn facility as a keyword. To continue writing clean, portable code we should replace the [[noreturn]] attribute with a noreturn keyword, following the usual convention that while C obfuscates new keywords with _Capital and adds a macro to map to the comfortable spelling, C++ simply adopts the all-lowercase spelling.
Rationale (August, 2010):
CWG felt that an attribute was a more appropriate representation for this feature.