Fix ArgumentOutOfRangeExecption with 0xffff parameters

Mono.Cecil/AssemblyReader.cs

@@ -988,15 +988,21 @@ Range ReadListRange (uint current_index, Table current, Table target)
 			uint next_index;
 			var current_table = image.TableHeap [current];
 
+			var last_index = image.TableHeap [target].Length + 1;
+
 			if (current_index == current_table.Length)
-				next_index = image.TableHeap [target].Length + 1;
+				next_index = last_index;
 			else {
 				var position = this.position;
 				this.position += (int) (current_table.RowSize - image.GetTableIndexSize (target));
 				next_index = ReadTableIndex (target);
 				this.position = position;
 			}
 
+			if (next_index == 0 && image.TableHeap [target].Length == 0xffff) {
+				next_index = last_index;
+			}
+
 			list.Start = start;
 			list.Length = next_index - start;
 

Test/Mono.Cecil.Tests/ParameterTests.cs

@@ -270,5 +270,29 @@ public void NullablePrimitiveParameterConstant ()
 				Assert.AreEqual (12, param.Constant);
 			});
 		}
+
+		[Test]
+		public void ModuleWith0xFFFFParameters ()
+		{
+			TestModule ("param0xffff.dll", module => {
+				var test = module.GetType ("Program");
+				var method = test.GetMethod ("F_65534");
+
+				Assert.AreEqual (1, method.Parameters.Count);
+				Assert.AreEqual ("a", method.Parameters [0].Name);
+			}, verify: false);
+		}
+
+		[Test]
+		public void ModuleWith0xFFFFParametersAndExtraParameterlessMethods ()
+		{
+			TestModule ("param0xffff-extended.dll", module => {
+				var test = module.GetType ("Program");
+				var method = test.GetMethod ("F_65534");
+
+				Assert.AreEqual (1, method.Parameters.Count);
+				Assert.AreEqual ("a", method.Parameters [0].Name);
+			}, verify: false);
+		}
 	}
 }