--- a/src/share/vm/runtime/arguments.cpp	Fri Jun 28 00:44:13 2013 -0700
+++ b/src/share/vm/runtime/arguments.cpp	Fri Jun 28 14:25:25 2013 +0200
@@ -1505,7 +1505,9 @@
     // By default HeapBaseMinAddress is 2G on all platforms except Solaris x86.
     // G1 currently needs a lot of C-heap, so on Solaris we have to give G1
     // some extra space for the C-heap compared to other collectors.
-    FLAG_SET_ERGO(uintx, HeapBaseMinAddress, 1*G);
+    // Use FLAG_SET_DEFAULT here rather than FLAG_SET_ERGO to make sure that
+    // code that checks for default values work correctly.
+    FLAG_SET_DEFAULT(HeapBaseMinAddress, 1*G);
   }
 }