From 4a271c9aaff48bbec27e4129348a2093e4b59965 Mon Sep 17 00:00:00 2001
From: Lucas Walter <wsacul@gmail.com>
Date: Sun, 10 Nov 2019 14:57:15 -0800
Subject: [PATCH] More detailed error message

---
 templates/ConfigType.h.template | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/templates/ConfigType.h.template b/templates/ConfigType.h.template
index 801a47b4..d10c0993 100644
--- a/templates/ConfigType.h.template
+++ b/templates/ConfigType.h.template
@@ -246,9 +246,11 @@ ${doline} ${linenum} "${filename}"
         }
       }
 
-      if (count != dynamic_reconfigure::ConfigTools::size(msg))
+      const int msg_count = dynamic_reconfigure::ConfigTools::size(msg);
+      if (count != msg_count)
       {
-        ROS_ERROR("${configname}Config::__fromMessage__ called with an unexpected parameter.");
+        ROS_ERROR("${configname}Config::__fromMessage__ called with an unexpected number of"
+                  " parameters: %d instead of %d.", msg_count, count);
         ROS_ERROR("Booleans:");
         for (unsigned int i = 0; i < msg.bools.size(); i++)
           ROS_ERROR("  %s", msg.bools[i].name.c_str());