diff -r 65a0107d52ed -r c3d0bd36ab28 src/share/vm/opto/compile.cpp
--- a/src/share/vm/opto/compile.cpp	Mon Mar 14 12:35:48 2016 +0300
+++ b/src/share/vm/opto/compile.cpp	Thu Apr 21 16:19:33 2016 +0300
@@ -608,6 +608,10 @@
     n->as_MachBranch()->label_set(&fakeL, 0);
   }
   n->emit(buf, this->regalloc());
+
+  // Emitting into the scratch buffer should not fail
+  assert (!failing(), err_msg_res("Must not have pending failure. Reason is: %s", failure_reason()));
+
   if (is_branch) // Restore label.
     n->as_MachBranch()->label_set(saveL, save_bnum);