[Bug c++/46476] Missing Warning about unreachable code after return [-Wunreachable-code-return]

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46476

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot 
gnu.org
                URL|                            |https://gcc.gnu.org/piperma
                   |                            |il/gcc-patches/2021-Novembe
                   |                            |r/585352.html

--- Comment #19 from Richard Biener <rguenth at gcc dot gnu.org> ---
Posted RFC patch.  The C++ frontend poses some more issues in GCC code for
statically true evaluated conditions like

  if (! GATHER_STATISTICS)
    {
      fprintf (stderr, "No RTX statistics\n");
      return;
    }

where it elides the if ().  It doesn't do that for if (0) though.