get rid of the _< thing if it's not a real filename

1 files changed, 12 insertions, 1 deletions

diff --git a/lib/Eval/Closure.pm b/lib/Eval/Closure.pm
index 161bcdf..46a3448 100644
--- a/lib/Eval/Closure.pm
+++ b/lib/Eval/Closure.pm
@@ -100,12 +100,23 @@ sub eval_closure {
     $args{source} = _canonicalize_source($args{source});
     _validate_env($args{environment} ||= {});
 
+    my $should_set_description = defined $args{description} && !($^P & 0x10);
+
     $args{source} = _line_directive(@args{qw(line description)})
                   . $args{source}
-        if defined $args{description} && !($^P & 0x10);
+        if $should_set_description;
+
+    my $existed_before;
+    $existed_before = exists $::{"_<$args{description}"}
+        if $should_set_description;
 
     my ($code, $e) = _clean_eval_closure(@args{qw(source environment)});
 
+    if (!$existed_before && $should_set_description) {
+        # this will be meaningless, and just leaks memory
+        delete $::{"_<$args{description}"};
+    }
+
     if (!$code) {
         if ($args{terse_error}) {
             die "$e\n";