[Bug c++/91024] [9 Regression] -Wimplicit-fallthrough is confused by likely/unlikely attributes

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91024

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Jun 28 22:57:16 2019
New Revision: 272804

URL: https://gcc.gnu.org/viewcvs?rev=272804&root=gcc&view=rev
Log:
        Backported from mainline
        2019-06-27  Jakub Jelinek  <jakub@redhat.com>

        PR c++/91024
        * gimplify.c (collect_fallthrough_labels): Ignore GIMPLE_PREDICT
        statements.

        * g++.dg/warn/Wimplicit-fallthrough-4.C: New test.

Added:
    branches/gcc-9-branch/gcc/testsuite/g++.dg/warn/Wimplicit-fallthrough-4.C
Modified:
    branches/gcc-9-branch/gcc/ChangeLog
    branches/gcc-9-branch/gcc/gimplify.c
    branches/gcc-9-branch/gcc/testsuite/ChangeLog