This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 112c. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
[Moved to DR at the November, 2014 meeting.]
The length of the __func__ array is implementation-defined but potentially depends on the signature of the function in which it occurs. However, __func__ is not listed among the type-dependent id-expressions in 188.8.131.52 [temp.dep.expr] paragraph 3.
Proposed resolution (February, 2014):
Change 184.108.40.206 [temp.dep.expr] paragraph 3 as follows:
An id-expression is type-dependent if it contains
an identifier associated by name lookup with one or more declarations declared with a dependent type,
an identifier associated by name lookup with one or more declarations of member functions of the current instantiation declared with a return type that contains a placeholder type (220.127.116.11 [dcl.spec.auto]),
a template-id that is dependent,