https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66869
Bug ID: 66869
Summary: [6 regression] -Wunused-function no longer warns for
static declarations without definition
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: sirl at gcc dot gnu.org
Target Milestone: ---
Up to gcc-5.1.1 r225711 -Wunused-functions warns like that:
> echo 'static void test(void);' | LANG=C gcc-5 -c -Wunused-function -x c -
<stdin>:1:13: warning: 'test' declared 'static' but never defined
[-Wunused-function]
>
But gcc-6.0.0 r225711 remains silent:
> echo 'static void test(void);' | LANG=C gcc-6 -c -Wunused-function -x c -
>
BTW, maybe it would make sense to split out this part from -Wunused-function
into a separate -Wstatic-decl-without-def. That's because likely more people
would like to turn this part of the warning into an error instead of all of
-Wunused-function.
