From f7811b927e9850cb0b922a325ee9b8d95377b54d Mon Sep 17 00:00:00 2001
From: Marco van 't Wout <marco@tremani.nl>
Date: Wed, 19 May 2021 11:12:21 +0200
Subject: [PATCH] Fix notice when handling c3 error before
 C3_CODECOVERAGE_MEDIATE_STORAGE is defined

---
 c3.php | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/c3.php b/c3.php
index 3c59a62..3116d44 100644
--- a/c3.php
+++ b/c3.php
@@ -38,9 +38,13 @@
 if (!function_exists('__c3_error')) {
     function __c3_error($message)
     {
-        $errorLogFile = defined('C3_CODECOVERAGE_ERROR_LOG_FILE') ?
-            C3_CODECOVERAGE_ERROR_LOG_FILE :
-            C3_CODECOVERAGE_MEDIATE_STORAGE . DIRECTORY_SEPARATOR . 'error.txt';
+        if (defined('C3_CODECOVERAGE_ERROR_LOG_FILE')) {
+            $errorLogFile = C3_CODECOVERAGE_ERROR_LOG_FILE;
+        } elseif (defined('C3_CODECOVERAGE_MEDIATE_STORAGE')) {
+            $errorLogFile = C3_CODECOVERAGE_MEDIATE_STORAGE . DIRECTORY_SEPARATOR . 'error.txt';
+        } else {
+            $errorLogFile = null;
+        }
         if (is_writable($errorLogFile)) {
             file_put_contents($errorLogFile, $message);
         } else {