From 6bf2679041d30f4b135276fdcb24d719b044d388 Mon Sep 17 00:00:00 2001
From: Ivan Kohler <ivan@freeside.biz>
Date: Tue, 29 Sep 2020 14:27:41 -0700
Subject: [PATCH 1/1] fix rare FP rounding errors on void, RT#84904

---
 FS/FS/cust_bill_pkg.pm | 28 ++++++++++++++++++++--------
 1 file changed, 20 insertions(+), 8 deletions(-)

diff --git a/FS/FS/cust_bill_pkg.pm b/FS/FS/cust_bill_pkg.pm
index 6f9c74a64..f0d710534 100644
--- a/FS/FS/cust_bill_pkg.pm
+++ b/FS/FS/cust_bill_pkg.pm
@@ -392,7 +392,7 @@ sub void {
 
   }
 
-  $error = $self->delete;
+  $error = $self->delete( skip_update_cust_bill_charged=>1 );
   if ( $error ) {
     $dbh->rollback if $oldAutoCommit;
     return $error;
@@ -448,6 +448,7 @@ Not recommended.
 
 sub delete {
   my $self = shift;
+  my %opt = @_;
 
   local $SIG{HUP} = 'IGNORE';
   local $SIG{INT} = 'IGNORE';
@@ -493,16 +494,27 @@ sub delete {
     }
   }
 
-  #fix the invoice amount
+  unless ( $opt{skip_update_cust_bill_charged} ) {
+
+    #fix the invoice amount
+
+    my $cust_bill = $self->cust_bill;
+    my $charged = $cust_bill->charged - $self->setup - $self->recur;
+    $charged = sprintf('%.2f', $charged + 0.00000001 );
+    $cust_bill->charged( $charged );
 
-  my $cust_bill = $self->cust_bill;
-  $cust_bill->charged( $cust_bill->charged - $self->setup - $self->recur );
+    #not adding a cc surcharge, but this override lets us modify charged
+    $cust_bill->{'Hash'}{'cc_surcharge_replace_hack'} = 1;
 
-  #not adding a cc surcharge, but this override lets us modify charged
-  $cust_bill->{'Hash'}{'cc_surcharge_replace_hack'} = 1;
+    my $error = $cust_bill->replace;
+    if ( $error ) {
+      $dbh->rollback if $oldAutoCommit;
+      return $error;
+    }
+
+  }
 
-  my $error =  $cust_bill->replace
-            || $self->SUPER::delete(@_);
+  my $error = $self->SUPER::delete(@_);
   if ( $error ) {
     $dbh->rollback if $oldAutoCommit;
     return $error;
-- 
2.11.0