http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52282
--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-05-04 18:40:51 UTC --- The ICEs, all of them, in the extended testcase too, seem easy to fix, apparently it's just that finish_decltype_type doesn't handle ADDR_EXPR. The remaining issues are more nasty, some can be fixed/wa with STRIP_NOPS, looks like we have to handle many NOP_EXPRs, something I don't really understand.