Work on eliminating systematic failures on make minitest:

make minitest passes a -minitest flag to t/TEST
t/TEST sees this and sets $ENV{PERL_CORE_MINITEST}
Tests can choose to skip based on this.
(Other tactic is to make loading of Errno by %! happen at run time.)

p4raw-id: //depot/perl@22423

1 files changed, 2 insertions, 1 deletions

diff --git a/t/io/read.t b/t/io/read.t
index ea2672dedb..63ffee1d5a 100755
--- a/t/io/read.t
+++ b/t/io/read.t
@@ -9,7 +9,8 @@ BEGIN {
 }
 
 use strict;
-use Errno;
+eval 'use Errno';
+die $@ if $@ and !$ENV{PERL_CORE_MINITEST};
 
 plan tests => 2;