From bf50ec4ac9a9c8646a1d09770dd0972bac1f602d Mon Sep 17 00:00:00 2001
From: Josh Haberman <jhaberman@gmail.com>
Date: Mon, 4 Jan 2016 11:18:54 -0800
Subject: Added debugging output to debug type= problem on Travis.

---
 ruby/ext/google/protobuf_c/defs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'ruby/ext/google/protobuf_c/defs.c')

diff --git a/ruby/ext/google/protobuf_c/defs.c b/ruby/ext/google/protobuf_c/defs.c
index 7e0cd14c..804ca078 100644
--- a/ruby/ext/google/protobuf_c/defs.c
+++ b/ruby/ext/google/protobuf_c/defs.c
@@ -543,7 +543,8 @@ VALUE FieldDescriptor_name_set(VALUE _self, VALUE str) {
 
 upb_fieldtype_t ruby_to_fieldtype(VALUE type) {
   if (TYPE(type) != T_SYMBOL) {
-    rb_raise(rb_eArgError, "Expected symbol for field type.");
+    rb_raise(rb_eArgError, "Expected symbol for field type, not: %s (%d)",
+             RSTRING_PTR(rb_inspect(type)), TYPE(type));
   }
 
 #define CONVERT(upb, ruby)                                           \
-- 
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