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Re: [gpsd-users] json.c:556:6: warning: empty declaration
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From: |
Gary E. Miller |
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Subject: |
Re: [gpsd-users] json.c:556:6: warning: empty declaration |
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Date: |
Thu, 4 Oct 2018 13:49:59 -0700 |
Yo Charles!
On Thu, 4 Oct 2018 14:36:20 -0600
Charles Curley <address@hidden> wrote:
> I just re-cloned the repo, so as to start with a fresh build. I
> then check out tag release-3.18. System is Debian 9.5 stretch.
Cool.
> json.c: In function 'json_internal_read_object':
> json.c:556:6: warning: empty declaration
> __attribute__ ((fallthrough));
> ^~~~~~~~~~~~~
Yeah. Looks like you have an old gcc? Known issue, nothing to worry
about.
> packet.c: In function 'nextstate':
> packet.c:1065:2: warning: empty declaration
> __attribute__ ((fallthrough));
> ^~~~~~~~~~~~~
Ditto.
> They are warning and not fatal. Still....
We know old gcc puts up those messages. New gcc is happy.
We looked for ways to tell all version of gcc, and other cc, that we
have intentional FALLTHOUGH, but failed. We settled on the way that
works for new gcc.
Suggestions welcome, but be warned, the problem is non-trivial.
RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
address@hidden Tel:+1 541 382 8588
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"If you can’t measure it, you can’t improve it." - Lord Kelvin
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