symfony
diff --git a/‎Filesystem.php
Copy file name to clipboardExpand all lines: Filesystem.php
+4Lines changed: 4 additions & 0 deletions b/‎Filesystem.php
Copy file name to clipboardExpand all lines: Filesystem.php
+4Lines changed: 4 additions & 0 deletions
diff --git a/‎Tests/FilesystemTest.php
Copy file name to clipboardExpand all lines: Tests/FilesystemTest.php
+16Lines changed: 16 additions & 0 deletions b/‎Tests/FilesystemTest.php
Copy file name to clipboardExpand all lines: Tests/FilesystemTest.php
+16Lines changed: 16 additions & 0 deletions
@@ -696,6 +696,10 @@ public function dumpFile(string $filename, $content)
             $this->rename($tmpFile, $filename, true);
         } finally {
             if (file_exists($tmpFile)) {
+                if ('\\' === \DIRECTORY_SEPARATOR && !is_writable($tmpFile)) {
+                    self::box('chmod', $tmpFile, self::box('fileperms', $tmpFile) | 0200);
+                }
+
                 self::box('unlink', $tmpFile);
             }
         }
 
@@ -1826,6 +1826,22 @@ public function testDumpKeepsExistingPermissionsWhenOverwritingAnExistingFile()
         $this->assertFilePermissions(745, $filename);
     }
 
+    public function testDumpFileCleansUpAfterFailure()
+    {
+        $targetFile = $this->workspace.'/dump-file';
+        $this->filesystem->touch($targetFile);
+        $this->filesystem->chmod($targetFile, 0444);
+
+        try {
+            $this->filesystem->dumpFile($targetFile, 'any content');
+        } catch (IOException $e) {
+        } finally {
+            $this->filesystem->chmod($targetFile, 0666);
+        }
+
+        $this->assertSame([$targetFile], glob($this->workspace.'/*'));
+    }
+
     public function testCopyShouldKeepExecutionPermission()
     {
         $this->markAsSkippedIfChmodIsMissing();
Original file line number	Diff line number	Diff line change
`@@ -696,6 +696,10 @@ public function dumpFile(string $filename, $content)`
`696`	`696`	`$this->rename($tmpFile, $filename, true);`
`697`	`697`	`} finally {`
`698`	`698`	`if (file_exists($tmpFile)) {`
	`699`	`+ if ('\\' === \DIRECTORY_SEPARATOR && !is_writable($tmpFile)) {`
	`700`	`+ self::box('chmod', $tmpFile, self::box('fileperms', $tmpFile) \| 0200);`
	`701`	`+ }`
	`702`	`+`
`699`	`703`	`self::box('unlink', $tmpFile);`
`700`	`704`	`}`
`701`	`705`	`}`