[Bug c++/48577] [C++0x] [4.6 Regression] "unexpected ast of kind unordered_expr" using isnan()

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48577

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-04-12 
16:56:08 UTC ---
isn't this PR 48369 ?