From 9f20af9374315da19cdd0d048c712c4f2278f12e Mon Sep 17 00:00:00 2001
From: "Frank Ch. Eigler" <fche@redhat.com>
Date: Wed, 23 Jan 2013 13:38:13 -0500
Subject: [PATCH] PR15059: suppress visible session::print_error if in listing
 mode

---
 session.cxx | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/session.cxx b/session.cxx
index ccdc666e0..894660e97 100644
--- a/session.cxx
+++ b/session.cxx
@@ -1789,6 +1789,13 @@ systemtap_session::print_error (const semantic_error& e)
       message_str[i] = message.str();
     }
 
+  // skip error message printing for listing mode with low verbosity
+  if (this->listing_mode && this->verbose <= 1)
+    {
+      seen_errors.insert (message_str[1]); // increment num_errors()
+      return;
+    }
+
   // Duplicate elimination
   if (seen_errors.find (message_str[1]) == seen_errors.end())
     {
-- 
2.43.5