[Bug c++/86569] [6/7/8/9 Regression] -Wnonnull-compare affects code generation since r233684

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86569

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Jul 23 07:48:56 2018
New Revision: 262928

URL: https://gcc.gnu.org/viewcvs?rev=262928&root=gcc&view=rev
Log:
        PR c++/86569
        * cp-gimplify.c (cp_fold): Don't fold comparisons into other kind
        of expressions other than INTEGER_CST regardless of TREE_NO_WARNING
        or warn_nonnull_compare.

        * g++.dg/warn/Wnonnull-compare-9.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/warn/Wnonnull-compare-9.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/cp-gimplify.c
    trunk/gcc/testsuite/ChangeLog