Addressing issue #781 (#782)

* Pose the problem

* Quick and v dirty fix

* A better and more targeted fix (to fix the previous fix)

1 files changed, 39 insertions, 0 deletions

diff --git a/Test/Mono.Cecil.Tests/ILProcessorTests.cs b/Test/Mono.Cecil.Tests/ILProcessorTests.cs
index 4eecfe3..c585403 100644
--- a/Test/Mono.Cecil.Tests/ILProcessorTests.cs
+++ b/Test/Mono.Cecil.Tests/ILProcessorTests.cs
@@ -64,6 +64,45 @@ namespace Mono.Cecil.Tests {
 		}
 
 		[Test]
+		public void InsertBeforeIssue697bis ()
+		{
+			var parameters = new ReaderParameters { SymbolReaderProvider = new MdbReaderProvider () };
+			using (var module = GetResourceModule ("Issue697.dll", parameters)) {
+				var pathGetterDef = module.GetTypes ()
+					.SelectMany (t => t.Methods)
+					.First (m => m.Name.Equals ("get_Defer"));
+
+				var body = pathGetterDef.Body;
+				var worker = body.GetILProcessor ();
+				var initialBody = body.Instructions.ToList ();
+				Console.WriteLine (initialBody.Sum (i => i.GetSize ()));
+
+				var head = initialBody.First ();
+				var opcode = worker.Create (OpCodes.Ldc_I4_1);
+				worker.InsertBefore (head, opcode);
+
+				Assert.That (pathGetterDef.DebugInformation.Scope.Start.IsEndOfMethod, Is.False);
+				foreach (var subscope in pathGetterDef.DebugInformation.Scope.Scopes)
+					Assert.That (subscope.Start.IsEndOfMethod, Is.False);
+
+				// big test -- we can write w/o crashing
+				var unique = Guid.NewGuid ().ToString ();
+				var output = Path.GetTempFileName ();
+				var outputdll = output + ".dll";
+
+				var writer = new WriterParameters () {
+					SymbolWriterProvider = new MdbWriterProvider (),
+					WriteSymbols = true
+				};
+				using (var sink = File.Open (outputdll, FileMode.Create, FileAccess.ReadWrite)) {
+					module.Write (sink, writer);
+				}
+
+				Assert.Pass ();
+			}
+		}
+
+		[Test]
 		public void InsertAfter ()
 		{
 			var method = CreateTestMethod (OpCodes.Ldloc_0, OpCodes.Ldloc_2, OpCodes.Ldloc_3);