From 8a88a18ef23330c513fcfad986ece7b7b4ed7318 Mon Sep 17 00:00:00 2001
From: Benedikt Reinartz <filmor@gmail.com>
Date: Tue, 21 Aug 2018 15:55:25 +0200
Subject: [PATCH 1/2] Use GetExportedTypes where possible and filter nested
 types

This is basically what @dmitriyse prepared in PR 528 without the event
code that I don't understand.
---
 CHANGELOG.md                   |  2 ++
 src/runtime/assemblymanager.cs | 17 +++++++++++------
 2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3dc668b0c..00f70e014 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@ This document follows the conventions laid out in [Keep a CHANGELOG][].
 ## [unreleased][]
 
 ### Added
+
 -   Added support for embedding python into dotnet core 2.0 (NetStandard 2.0)
 -   Added new build system (pythonnet.15.sln) based on dotnetcore-sdk/xplat(crossplatform msbuild).
     Currently there two side-by-side build systems that produces the same output (net40) from the same sources.
@@ -36,6 +37,7 @@ This document follows the conventions laid out in [Keep a CHANGELOG][].
 -   Fixed errors breaking .NET Remoting on method invoke ([#276][i276])
 -   Fixed PyObject.GetHashCode ([#676][i676])
 -   Fix memory leaks due to spurious handle incrementation ([#691][i691])
+-   Fix spurious assembly loading exceptions from private types ([#703][i703])
 
 
 ## [2.3.0][] - 2017-03-11
diff --git a/src/runtime/assemblymanager.cs b/src/runtime/assemblymanager.cs
index d63930a58..1f64a0594 100644
--- a/src/runtime/assemblymanager.cs
+++ b/src/runtime/assemblymanager.cs
@@ -343,9 +343,7 @@ internal static void ScanAssembly(Assembly assembly)
             // A couple of things we want to do here: first, we want to
             // gather a list of all of the namespaces contributed to by
             // the assembly.
-
-            Type[] types = assembly.GetTypes();
-            foreach (Type t in types)
+            foreach (Type t in GetTypes(assembly))
             {
                 string ns = t.Namespace ?? "";
                 if (!namespaces.ContainsKey(ns))
@@ -419,10 +417,9 @@ public static List<string> GetNames(string nsname)
             {
                 foreach (Assembly a in namespaces[nsname].Keys)
                 {
-                    Type[] types = a.GetTypes();
-                    foreach (Type t in types)
+                    foreach (Type t in GetTypes(a))
                     {
-                        if ((t.Namespace ?? "") == nsname)
+                        if ((t.Namespace ?? "") == nsname && !t.IsNested)
                         {
                             names.Add(t.Name);
                         }
@@ -461,5 +458,13 @@ public static Type LookupType(string qname)
             }
             return null;
         }
+
+        internal static Type[] GetTypes(Assembly a)
+        {
+            if (a.IsDynamic)
+                return a.GetTypes();
+            else
+                return a.GetExportedTypes();
+        }
     }
 }

From 76314725be60ca0e49a39dcbc4405ae7c7281097 Mon Sep 17 00:00:00 2001
From: Benedikt Reinartz <filmor@gmail.com>
Date: Wed, 14 Nov 2018 12:30:28 +0100
Subject: [PATCH 2/2] Catch exceptions during type loading

---
 src/runtime/assemblymanager.cs | 26 +++++++++++++++++++++++---
 1 file changed, 23 insertions(+), 3 deletions(-)

diff --git a/src/runtime/assemblymanager.cs b/src/runtime/assemblymanager.cs
index e07802518..66c4b9904 100644
--- a/src/runtime/assemblymanager.cs
+++ b/src/runtime/assemblymanager.cs
@@ -4,6 +4,7 @@
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
+using System.Linq;
 using System.Reflection;
 using System.Threading;
 
@@ -470,9 +471,28 @@ public static Type LookupType(string qname)
         internal static Type[] GetTypes(Assembly a)
         {
             if (a.IsDynamic)
-                return a.GetTypes();
+            {
+                try
+                {
+                    return a.GetTypes();
+                }
+                catch (ReflectionTypeLoadException exc)
+                {
+                    // Return all types that were successfully loaded
+                    return exc.Types.Where(x => x != null).ToArray();
+                }
+            }
             else
-                return a.GetExportedTypes();
+            {
+                try
+                {
+                    return a.GetExportedTypes();
+                }
+                catch (FileNotFoundException)
+                {
+                    return new Type[0];
+                }
+            }
         }
     }
-}
+}
\ No newline at end of file

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