Re: [Bug-gnulib] stpncpy and AIX

[Jim Meyering]

Bruno Haible <address@hidden> wrote:
> Jim Meyering wrote:
>> How does its behavior differ?
>
> glibc's stpncpy (to, from, n) has the return value  to + n,
> whereas in AIX the return value is                  to + max (n, 1) - 1

Ick.

>> What about having an autoconf test detect it
>
> A possible test that invokes running a program can be made up by testing
> the return value of a sample call. But it doesn't work with crosscompiling.

There's nothing wrong with running a program, as long as there's
a viable fall-back position to take when cross-compiling.
And in this case there is: just use the replacement function.
Besides, anyone who's serious about cross-compiling will have
seeded their autoconf cache with the proper values for all
run tests.

>> and then compile the replacement function only if necessary?
>
> Sure, that's what we do always.
...