tracepoint probes: ensure valid string given

diff --git a/tapsets.cxx b/tapsets.cxx
index 977bbca142bd0801d43650c77fb6e587f0b26999..03a359d7fccf8c6e6106632a3ee37737782ac8b0 100644 (file)
--- a/tapsets.cxx
+++ b/tapsets.cxx
@@ -10903,6 +10903,10 @@ struct tracepoint_query : public base_query
         this->system = tracepoint.substr(0, sys_pos);
         this->tracepoint = tracepoint.substr(sys_pos+1);
       }
+
+    // make sure we have something to query (filters out e.g. "" and ":")
+    if (this->tracepoint.empty())
+      throw SEMANTIC_ERROR (_("invalid tracepoint string provided"));
   }
 };