[Bug c++/52108] declval() with incomplete type

[abominable-snowman at yandex dot ru]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52108

--- Comment #2 from Petr Ovtchenkov <abominable-snowman at yandex dot ru> 
2012-04-18 09:09:04 UTC ---
There are opinion, that this is not a bug:

http://llvm.org/bugs/show_bug.cgi?id=12583