--- hdf5-1.8.2.orig/perform/zip_perf.c	2009-03-21 14:36:55.000000000 +0100
+++ hdf5-1.8.2/perform/zip_perf.c	2009-03-21 14:37:26.000000000 +0100
@@ -549,7 +549,7 @@
         unlink(filename);
 
         /* do compressed data write */
-        output = open(filename, O_RDWR | O_CREAT);
+        output = open(filename, O_RDWR | O_CREAT, S_IRWXU);
 
         if (output == -1)
             error(strerror(errno));
--- hdf5-1.8.2.orig/config/gnu-flags	2009-03-21 18:00:58.000000000 +0100
+++ hdf5-1.8.2/config/gnu-flags	2009-03-21 18:00:03.000000000 +0100
@@ -151,7 +151,7 @@
         # optimization levels (which shows up as failures for various integer
         # types -> long long conversions in the test/dtypes test).  Perhaps
         # later versions of gcc will fix this bug... - QAK - 2003/10/20
-        PROD_CFLAGS="-O"
+        PROD_CFLAGS="-O0"
         ;;
       gcc-4*)
         # Be optimistic about future versions of gcc.. :-) - QAK - 2003/10/20