Fix wrong local variable symbol

Author: veblush

core/RoslynMdbWriter/MdbWriter.cs

@@ -12,7 +12,7 @@ namespace Mono.CompilerServices.SymbolWriter
 	class MdbWriter : ISymUnmanagedWriter5, IPdbWriter
 	{
 		MonoSymbolWriter msw;
-		int nextLocalIndex;
+		// int nextLocalIndex;
 
 		Dictionary<string,SymbolDocumentWriterImpl> documents = new Dictionary<string, SymbolDocumentWriterImpl> ();
 
@@ -48,7 +48,7 @@ public ISymUnmanagedDocumentWriter DefineDocument (string url, ref Guid language
 
 		public void CloseMethod ()
 		{
-			nextLocalIndex = 0;
+			// nextLocalIndex = 0;
 			msw.CloseMethod ();
 		}
 
@@ -136,7 +136,8 @@ public void DefineSequencePoints (ISymUnmanagedDocumentWriter document, uint cou
 
 		public void DefineLocalVariable2 (string name, uint attributes, uint sigToken, uint addrKind, uint addr1, uint addr2, uint addr3, uint startOffset, uint endOffset)
 		{
-			msw.DefineLocalVariable (nextLocalIndex++, name);
+			// msw.DefineLocalVariable (nextLocalIndex++, name);
+			msw.DefineLocalVariable ((int)addr1, name);
 		}
 
 		#endregion

core/RoslynMdbWriter/README.md

@@ -18,3 +18,5 @@ for handling changes of Roslyn.
   - MetadataWriter.guidIndex -> MetadataWriter.heaps.\_guids
 - Implment dummy MdbWriter.GetDebugInfo instead of returning nothing.
 - Make MdbWriter implement IPdbWriter.
+- MdbWriter.DefineLocalVariable2 uses addr1 as a local variable index rather than
+  counting index with nextLocalIndex.

samples/Basic/Assets/Scripts/Test02.cs

@@ -6,6 +6,21 @@ public class Test02 : MonoBehaviour
     void Start()
     {
         Debug.Log("Test02.Start");
-        GetComponent<Text>().text = "02";
+        GetComponent<Text>().text = "02:" + Test(-1, 3.5f);
+    }
+
+    string Test(int param_a, float param_b)
+    {
+        int local_c = (int)(param_a + param_b);
+        if (param_a > 0)
+        {
+            string local_d = "A+" + param_b;
+            return local_d;
+        }
+        else
+        {
+            string local_e = "A-" + param_b;
+            return local_e;
+        }
     }
 }