RFC V2 [1/2] test-in-container

[DJ Delorie]

Andreas Schwab <schwab@linux-m68k.org> writes:
>> +      printf ("unable to open %s for reading\n", sname);
>> +      perror ("the error was");
>
> That doesn't work, the printf call can clobber errno.  Use error instead.

Weird, I've been using that idiom for decades and never had that happen.
But, I'll put it on the list of things to change for V3.

Thanks!