Make sysconf tests handle unimplemented success indications

for the benefit of Mac OS X and VMS.

p4raw-id: //depot/perl@28574

diff --git a/ext/POSIX/t/sysconf.t b/ext/POSIX/t/sysconf.t
index cf04fb5..68630fd 100644 (file)
--- a/ext/POSIX/t/sysconf.t
+++ b/ext/POSIX/t/sysconf.t
@@ -153,11 +153,12 @@ END {
 # testing sysconf()
 for my $constant (@sys_consts) {
  SKIP: {
-       skip "Saved IDs broken on Mac OS X (Perl #24122)", 3
-           if $^O eq 'darwin' && $constant eq '_SC_SAVED_IDS';
+       $! = 0;
        $r = eval { sysconf( eval "$constant()" ) };
+       my $s = defined($r) || $! == 0;
        is( $@, '', "calling sysconf($constant)" );
-       ok( defined $r, "\tchecking that the returned value is defined: $r" );
+       ok( $s, "\tchecking that the returned value is defined or that errno is clear: $r $!" );
+       skip "$constant not implemented on $^O", 1 if $s && !defined($r);
        ok( looks_like_number($r), "\tchecking that the returned value looks like a number" );
     }
 }