From 16d43948456ee3c96a2c0b8bd9f446fc85a728b2 Mon Sep 17 00:00:00 2001
From: Andreas Bergmeier <a.bergmeier@dsfishlabs.com>
Date: Tue, 24 May 2016 09:19:35 +0200
Subject: [PATCH] Increase available information on invocation error.

---
 include/pybind11/pybind11.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/pybind11/pybind11.h b/include/pybind11/pybind11.h
index ee76a670..02d81e6f 100644
--- a/include/pybind11/pybind11.h
+++ b/include/pybind11/pybind11.h
@@ -422,6 +422,14 @@ protected:
                 msg += it2->signature;
                 msg += "\n";
             }
+            msg += "    Invoked with: ";
+            tuple args_(args, true);
+            for( std::size_t ti = 0; ti != args_.size(); ++ti)
+            {
+                msg += static_cast<std::string>(static_cast<object>(args_[ti]).str());
+                if ((ti + 1) != args_.size() )
+                    msg += ", ";
+            }
             PyErr_SetString(PyExc_TypeError, msg.c_str());
             return nullptr;
         } else if (!result) {