Heads up: new const warnings from strchr with gcc 16

[Gary E. Miller]

Yo Hal!

On Wed, 11 Mar 2026 20:24:12 -0700
Hal Murray via devel <devel at ntpsec.org> wrote:

> Fedora 44-Alpha is out.  It's got gcc 16 which is now "smart" enough
> to generate a new warning.

You, that hit gpsd as well.

> If you pass in a const string, the compiler figures out that the
> answer is pointing into that string so the result should really be a
> const.

Yes.

> I fixed a few simple cases.  I haven't fixed this one.gcc 
>           char *cpw = strchr(cp, '\r')

Isn't the fix simply:

const char *cpw = strchr(cp, '\r')

As you said, since "cp" is (const char *0  then  cpw must also be.

Kinda nice error actually.

RGDS
GARY
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