Fix croak() and confess() so that they don't clobber $!

(plus tests to check this)

p4raw-id: //depot/perl@24374

1 files changed, 7 insertions, 1 deletions

diff --git a/lib/Carp.t b/lib/Carp.t
index 47f83c96c1..d07e202d15 100644
--- a/lib/Carp.t
+++ b/lib/Carp.t
@@ -6,7 +6,7 @@ BEGIN {
 
 use Carp qw(carp cluck croak confess);
 
-plan tests => 19;
+plan tests => 21;
 
 ok 1;
 
@@ -155,3 +155,9 @@ sub w { cluck @_ }
         main::w(1);
     }
 }
+
+# Check that croak() and confess() don't clobber $!
+runperl(prog => 'use Carp; $@=q{Phooey}; $!=42; croak(q{Dead})', stderr => 1);
+is($?>>8, 42, 'croak() doesn\'t clobber $!');
+runperl(prog => 'use Carp; $@=q{Phooey}; $!=42; confess(q{Dead})', stderr => 1);
+is($?>>8, 42, 'confess() doesn\'t clobber $!');