https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65403
Bug ID: 65403
Summary: -Wno-error=<not implemented> is an error
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Keywords: diagnostic
Severity: enhancement
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: rguenth at gcc dot gnu.org
If you want to silence warnings you can use -Wno-XXX without caring about
whether
a compiler implements -WXXX already. This doesn't seem to work with
-Wno-error=XXX which errors on unknown XXX.
It seems to me that we should treat -W[no-]error=XXX the same as -Wno-XXX
for unknown XXX as it certainly will enable/disable errors for the warning XXX
both if present or not present (no warnings anyway).
> gcc-5 -Wall -Werror -Wno-error=logical-not-parentheses -S t.c
> gcc-4.8 -Wall -Werror -Wno-error=logical-not-parentheses -S t.c
cc1: error: -Werror=logical-not-parentheses: no option
-Wlogical-not-parentheses
> gcc-5 -Wno-error=foo -S t.c
cc1: error: -Werror=foo: no option -Wfoo
