1 files changed, 19 insertions, 1 deletions
diff --git a/t/op/pat.t b/t/op/pat.t
index e6b90158f9..5516ce595c 100755
--- a/t/op/pat.t
+++ b/t/op/pat.t
@@ -2,7 +2,7 @@
 
 # $RCSfile: pat.t,v $$Revision: 4.1 $$Date: 92/08/07 18:28:12 $
 
-print "1..104\n";
+print "1..107\n";
 
 $x = "abc\ndef\n";
 
@@ -355,6 +355,24 @@ print "not " unless f(pos($x)) == 4;
 print "ok $test\n";
 $test++;
 
+$x = $^R = 67;
+'foot' =~ /foo(?{$x = 12; 75})[t]/;
+print "not " unless $^R eq '75';
+print "ok $test\n";
+$test++;
+
+$x = $^R = 67;
+'foot' =~ /foo(?{$x = 12; 75})[xy]/;
+print "not " unless $^R eq '67' and $x eq '12';
+print "ok $test\n";
+$test++;
+
+$x = $^R = 67;
+'foot' =~ /foo(?{ $^R + 12 })((?{ $x = 12; $^R + 17 })[xy])?/;
+print "not " unless $^R eq '79' and $x eq '12';
+print "ok $test\n";
+$test++;
+
 sub must_warn_pat {
     my $warn_pat = shift;
     return sub { print "not " unless $_[0] =~ /$warn_pat/ }