This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 110c. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
[Moved to DR at the April, 2013 meeting.]
The specification of static_cast (220.127.116.11 [expr.static.cast]) does not describe conversion of a scoped enumeration value to bool. Presumably it should be handled as for unscoped enumerations, with a zero value becoming false and a non-zero value becoming true.
Proposed resolution (August, 2012):
Change 18.104.22.168 [expr.static.cast] paragraph 9 as follows:
A value of a scoped enumeration type (9.7.1 [dcl.enum]) can be explicitly converted to an integral type.
Thevalue is unchanged if the original value can be represented by the specified type. Otherwise, the resulting value is unspecified.