Index: llvm/trunk/utils/lit/lit/TestRunner.py
===================================================================
--- llvm/trunk/utils/lit/lit/TestRunner.py
+++ llvm/trunk/utils/lit/lit/TestRunner.py
@@ -991,6 +991,7 @@
     for i,f in stderrTempFiles:
         f.seek(0, 0)
         procData[i] = (procData[i][0], f.read())
+        f.close()
 
     exitCode = None
     for i,(out,err) in enumerate(procData):