https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114606
Bug ID: 114606
Summary: -Whardened doesn't trigger with -fcf-protection=none
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: driver
Assignee: unassigned at gcc dot gnu.org
Reporter: mpolacek at gcc dot gnu.org
Target Milestone: ---
-Whardened warns when -fhardened couldn't enable a hardening option because
that option was disabled on the command line, e.g.:
$ ./cc1plus -quiet g.C -fhardened -O2 -fstack-protector
cc1plus: warning: ‘-fstack-protector-strong’ is not enabled by ‘-fhardened’
because it was specified on the command line [-Whardened]
but it doesn't work as expected with -fcf-protection=none:
$ ./cc1plus -quiet g.C -fhardened -O2 -fcf-protection=none
# should warn
because we're checking == CF_NONE which doesn't distinguish between nothing and
-fcf-protection=none. I'm hoping the fix is simply to use OPTION_SET_P.
