diff -r a7c0f60a1294 -r 294e48b4f704 hotspot/src/share/vm/gc/g1/vm_operations_g1.cpp
--- a/hotspot/src/share/vm/gc/g1/vm_operations_g1.cpp	Mon Sep 28 15:05:02 2015 +0200
+++ b/hotspot/src/share/vm/gc/g1/vm_operations_g1.cpp	Tue Sep 29 11:02:08 2015 +0200
@@ -66,8 +66,8 @@
     _should_retry_gc(false),
     _old_marking_cycles_completed_before(0) {
   guarantee(target_pause_time_ms > 0.0,
-            err_msg("target_pause_time_ms = %1.6lf should be positive",
-                    target_pause_time_ms));
+            "target_pause_time_ms = %1.6lf should be positive",
+            target_pause_time_ms);
   _gc_cause = gc_cause;
 }