[Bug c++/52875] ADL failure + ICE in decltype

[paolo.carlini at oracle dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52875

--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> ---
This is fixed in 4.8.3, 4.9.0 and trunk. I'm adding the testcase and closing
the bug.