David Nicol <[EMAIL PROTECTED]> writes:
> On 13 May 2005 03:11:36 -0700, Gisle Aas <[EMAIL PROTECTED]> wrote:
> > Another way to fix this to to make $? be exactly those 16 bits
> > described by this code segment found in description of system in
> > perlfunc:
> >
> > | You can check all the failure possibilities by inspecting
> > | C<$?> like this:
> > |
> > | if ($? == -1) {
> > | print "failed to execute: $!\n";
> > | }
> > | elsif ($? & 127) {
> > | printf "child died with signal %d, %s coredump\n",
> > | ($? & 127), ($? & 128) ? 'with' : 'without';
> > | }
> > | else {
> > | printf "child exited with value %d\n", $? >> 8;
> > | }
>
> this code identifies the low seven bits as the signal, the
> eigth bit as the coredump flag, and divides by 256 to get
> the exit value. It does not assert in any way that the
> exit value is limited to eight bits.
True. You need to start out with the context that $? is a 16 bit
value in the first place and perlvar.pod does state that this is the
case.
> Does AIX 5 have 32-bit shorts?
I have no idea. Does it matter?
Regards,
Gisle
