[Bug c/81544] attribute noreturn and warn_unused_result on the same function accepted

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81544

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch

--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch posted for review:
  https://gcc.gnu.org/ml/gcc-patches/2017-08/msg00602.html

This general solution is intended to supersed Marek's more targeted fix
previously posted here:
  https://gcc.gnu.org/ml/gcc-patches/2017-07/msg01590.html