From c1703d7b17225484d9c856998bdd63322b1d7a4f Mon Sep 17 00:00:00 2001
From: vwxyzh <vwxyzh@gmail.com>
Date: Thu, 1 Sep 2016 20:02:29 -0700
Subject: [PATCH] Add information for metadata fail.

---
 .../Visitors/SymbolVisitorAdapter.cs                   | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/Microsoft.DocAsCode.Metadata.ManagedReference/Visitors/SymbolVisitorAdapter.cs b/src/Microsoft.DocAsCode.Metadata.ManagedReference/Visitors/SymbolVisitorAdapter.cs
index 2a616a6fe41..0fccc04b84c 100644
--- a/src/Microsoft.DocAsCode.Metadata.ManagedReference/Visitors/SymbolVisitorAdapter.cs
+++ b/src/Microsoft.DocAsCode.Metadata.ManagedReference/Visitors/SymbolVisitorAdapter.cs
@@ -15,6 +15,7 @@ namespace Microsoft.DocAsCode.Metadata.ManagedReference
 
     using Microsoft.DocAsCode.Common;
     using Microsoft.DocAsCode.DataContracts.ManagedReference;
+    using Microsoft.DocAsCode.Exceptions;
 
     public class SymbolVisitorAdapter
         : SymbolVisitor<MetadataItem>
@@ -430,7 +431,14 @@ public string AddSpecReference(
             IReadOnlyList<string> typeGenericParameters = null,
             IReadOnlyList<string> methodGenericParameters = null)
         {
-            return _generator.AddSpecReference(symbol, typeGenericParameters, methodGenericParameters, _references, this);
+            try
+            {
+                return _generator.AddSpecReference(symbol, typeGenericParameters, methodGenericParameters, _references, this);
+            }
+            catch (Exception ex)
+            {
+                throw new DocfxException($"Unable to generate spec reference for {VisitorHelper.GetCommentId(symbol)}", ex);
+            }
         }
 
         #endregion