From 4ce3836f512d7d0b86cd563e15f5d0d0c607159f Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Fri, 1 May 2020 17:23:32 +0200
Subject: [PATCH] Fix creation of a php: dir when running create-project, fixes
 #8849

---
 src/Composer/Json/JsonFile.php | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/Composer/Json/JsonFile.php b/src/Composer/Json/JsonFile.php
index d1d189287..1e30690c1 100644
--- a/src/Composer/Json/JsonFile.php
+++ b/src/Composer/Json/JsonFile.php
@@ -112,11 +112,17 @@ class JsonFile
      */
     public function write(array $hash, $options = 448)
     {
+        if ($this->path === 'php://memory') {
+            file_put_contents($this->path, static::encode($hash, $options));
+
+            return;
+        }
+
         $dir = dirname($this->path);
         if (!is_dir($dir)) {
             if (file_exists($dir)) {
                 throw new \UnexpectedValueException(
-                    $dir.' exists and is not a directory.'
+                    realpath($dir).' exists and is not a directory.'
                 );
             }
             if (!@mkdir($dir, 0777, true)) {