[Bug c++/52231] [missed optimization/diagnostics] address-of-reference

[pawel_sikora at zoho dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52231

Pawel Sikora <pawel_sikora at zoho dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
      Known to work|                            |6.2.1, 7.0
         Resolution|---                         |FIXED

--- Comment #8 from Pawel Sikora <pawel_sikora at zoho dot com> ---
s% ~/src/gcc-install/usr/local/bin/g++ pr52231.cpp -c -O2 -Wall -Wextra
-fdump-tree-optimized -fdiagnostics-color=never
pr52231.cpp: In function 'void bar()':
pr52231.cpp:7:17: warning: the compiler can assume that the address of 'a' will
never be NULL [-Waddress]
         if ( &a == 0 )    //     <== useless stmt (not diagnosed/not
optimized)
              ~~~^~~~