[Bug c/63611] Invalid optimization for "==" on pointers

[Keith.S.Thompson at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63611

--- Comment #1 from Keith Thompson <Keith.S.Thompson at gmail dot com> ---
A bug report for a similar issue with clang is here:
http://llvm.org/bugs/show_bug.cgi?id=21327