Fix generation of functions with union params

src/Generator/Passes/CleanInvalidDeclNamesPass.cs

@@ -108,25 +108,6 @@ namespace CppSharp.Passes
             return ret;
         }
 
-        public override bool VisitTypedefDecl(TypedefDecl typedef)
-        {
-            if (base.VisitTypedefDecl(typedef))
-                return false;
-
-            var @class = typedef.Namespace.FindClass(typedef.Name);
-
-            // Clang will walk the typedef'd tag decl and the typedef decl,
-            // so we ignore the class and process just the typedef.
-
-            if (@class != null)
-                typedef.ExplicitlyIgnore();
-
-            if (typedef.Type == null)
-                typedef.ExplicitlyIgnore();
-
-            return true;
-        }
-
         private void CheckEnumName(Enumeration @enum)
         {
             // If we still do not have a valid name, then try to guess one

tests/Common/Common.Tests.cs

@@ -619,5 +619,13 @@ public class CommonTests : GeneratorTestFixture
         {
         }
     }
-}
 
+    [Test]
+    public void TestFuncWithUnionParam()
+    {
+        var ut = new union_t();
+        ut.c = 20;
+        var v = common.func_union(ut);
+        Assert.AreEqual(20, v);
+    }
+}

tests/Common/Common.h

@@ -1072,3 +1072,10 @@ public:
     DerivedFromTemplateInstantiationWithVirtual();
 };
 
+typedef DLL_API union {
+    int c;
+} union_t;
+
+int DLL_API func_union(union_t u) {
+    return u.c;
+}