Encountering a PFPO insn in a client program while running on a host
that does not have that insn now causes an emulation error.
Previously, it caused a failing assertion which was incorrect.


git-svn-id: svn://svn.valgrind.org/vex/trunk@3030 8f6e269a-dfd6-0310-a8e1-e2731360e62c
diff --git a/priv/main_main.c b/priv/main_main.c
index 871fc13..a50f3f7 100644
--- a/priv/main_main.c
+++ b/priv/main_main.c
@@ -1196,6 +1196,8 @@
         return "Instruction stckf is not supported on this host";
      case EmFail_S390X_ecag:
         return "Instruction ecag is not supported on this host";
+     case EmFail_S390X_pfpo:
+        return "Instruction pfpo is not supported on this host";
      case EmFail_S390X_fpext:
         return "Encountered an instruction that requires the floating "
                "point extension facility.\n"