No need to flush the package's MRO cache if we've just flushed it.

diff --git a/lib/constant.pm b/lib/constant.pm
index b77c085..255aa99 100644 (file)
--- a/lib/constant.pm
+++ b/lib/constant.pm
@@ -4,7 +4,7 @@ use strict;
 use warnings::register;
 
 use vars qw($VERSION %declared);
-$VERSION = '1.18';
+$VERSION = '1.19';
 
 #=======================================================================
 
@@ -45,6 +45,7 @@ sub import {
     my $constants;
     my $multiple  = ref $_[0];
     my $pkg = caller;
+    my $done_mro;
     my $symtab;
 
     if (_CAN_PCS) {
@@ -123,7 +124,8 @@ sub import {
                    # constants from cv_const_sv are read only. So we have to:
                    Internals::SvREADONLY($scalar, 1);
                    $symtab->{$name} = \$scalar;
-                   mro::method_changed_in($pkg);
+                   # No need to flush the cache if we've just flushed it.
+                   mro::method_changed_in($pkg) unless $done_mro++;
                } else {
                    *$full_name = sub () { $scalar };
                }