+#if osf3_HOST_OS
+/* ToDo: Perhaps by adjusting this value we can make linking without
+ * -static work (i.e., not generate a core-dumping executable)? */
+# if SIZEOF_VOID_P == 8
+ RtsFlags.GcFlags.heapBase = 0x180000000L;
+# else
+# error I have no idea where to begin the heap on a non-64-bit osf3 machine.
+# endif
+#else
+ RtsFlags.GcFlags.heapBase = 0; /* means don't care */
+#endif
+