From b94c430dd82e381aeda924a1038616bf4bef874e Mon Sep 17 00:00:00 2001
From: Nicolas Corder <nicolas@go-redrock.com>
Date: Tue, 14 Sep 2021 11:54:39 -0700
Subject: [PATCH] Add output buffer length check before attempting to end it

---
 src/Whoops/Run.php               | 2 +-
 src/Whoops/Util/SystemFacade.php | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/Whoops/Run.php b/src/Whoops/Run.php
index 52486d0d..14bd1bfe 100644
--- a/src/Whoops/Run.php
+++ b/src/Whoops/Run.php
@@ -393,7 +393,7 @@ public function handleException($exception)
             // @todo Might be able to clean this up a bit better
             if ($willQuit) {
                 // Cleanup all other output buffers before sending our output:
-                while ($this->system->getOutputBufferLevel() > 0) {
+                while ($this->system->getOutputBufferLevel() > 0 && $this->system->getOutputBufferLength() > 0) {
                     $this->system->endOutputBuffering();
                 }
 
diff --git a/src/Whoops/Util/SystemFacade.php b/src/Whoops/Util/SystemFacade.php
index 9eb0acfa..4d1c35b6 100644
--- a/src/Whoops/Util/SystemFacade.php
+++ b/src/Whoops/Util/SystemFacade.php
@@ -77,6 +77,14 @@ public function cleanOutputBuffer()
         return ob_get_clean();
     }
 
+    /**
+     * @return int
+     */
+    public function getOutputBufferLength()
+    {
+        return ob_get_length();
+    }
+
     /**
      * @return int
      */