commit 463154c669010cffc0e96b683576f1e879b61d8b
Author: yac <yac@blesmrt.net>
Date:   Mon Mar 11 18:42:39 2013 +0100

    don't unlink the result file

--- src/test/regress/pg_regress.c.orig
+++ src/test/regress/pg_regress.c
@@ -2592,7 +2592,6 @@ regression_main(int argc, char *argv[],
 	else
 	{
 		unlink(difffilename);
-		unlink(logfilename);
 	}
 
 	fclose(logfile);