[Bug c++/44811] non controllable bogus warning: right/left shift count is negative

["drwowe at yahoo dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44811

D W <drwowe at yahoo dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |drwowe at yahoo dot com

--- Comment #3 from D W <drwowe at yahoo dot com> 2012-04-12 21:36:14 UTC ---
I'm also getting a different but similar warning.

Trivial example:

int shiftifbig(int x) {
  if (sizeof(x) > 4) {
    return x>>32;
  } else {
    return x;
  }
}

produces the following spurious warning:

warning: right shift count >= width of type [enabled by default]


Please gate this warning on something like -Wshift so that the corresponding
-Wno-shift could be used.
Even better, suppress the warning automatically from dead code like in the
above example.