From ea1aa4079b5a4182d4308cfed1358bb9eebe13d7 Mon Sep 17 00:00:00 2001
From: Renaud Pawlak <renaud.pawlak@gmail.com>
Date: Fri, 11 Sep 2020 13:04:25 +0200
Subject: [PATCH] fix occasional npe and cast exceptions when parsing Java code
 with compilation errors

---
 .../org/jsweet/transpiler/AsyncAwaitPropagationScanner.java    | 3 +++
 .../org/jsweet/transpiler/GlobalBeforeTranslationScanner.java  | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/transpiler/src/main/java/org/jsweet/transpiler/AsyncAwaitPropagationScanner.java b/transpiler/src/main/java/org/jsweet/transpiler/AsyncAwaitPropagationScanner.java
index 83dff012..8d7407fd 100644
--- a/transpiler/src/main/java/org/jsweet/transpiler/AsyncAwaitPropagationScanner.java
+++ b/transpiler/src/main/java/org/jsweet/transpiler/AsyncAwaitPropagationScanner.java
@@ -65,6 +65,9 @@ public class AsyncAwaitPropagationScanner extends AbstractTreeScanner {
     @Override
     public void visitApply(JCMethodInvocation invocation) {
         try {
+            if (!(invocation.meth.getClass().getField("sym").get(invocation.meth) instanceof MethodSymbol)) {
+                return;
+            }
             MethodSymbol method = (MethodSymbol) invocation.meth.getClass().getField("sym").get(invocation.meth);
             if (context.hasAnnotationType(method, JSweetConfig.ANNOTATION_ASYNC)
                     && !"void".equals(method.getReturnType().toString())) {
diff --git a/transpiler/src/main/java/org/jsweet/transpiler/GlobalBeforeTranslationScanner.java b/transpiler/src/main/java/org/jsweet/transpiler/GlobalBeforeTranslationScanner.java
index d4451d7c..e69e6598 100644
--- a/transpiler/src/main/java/org/jsweet/transpiler/GlobalBeforeTranslationScanner.java
+++ b/transpiler/src/main/java/org/jsweet/transpiler/GlobalBeforeTranslationScanner.java
@@ -146,7 +146,7 @@ public class GlobalBeforeTranslationScanner extends AbstractTreeScanner {
 					context.countStaticInitializer(classdecl.sym);
 				}
 			}
-			if (def instanceof JCMethodDecl) {
+			if (def instanceof JCMethodDecl && ((JCMethodDecl) def).sym != null) {
 				if (globals && ((JCMethodDecl) def).sym.isStatic()) {
 					context.registerGlobalMethod(classdecl, (JCMethodDecl) def);
 				} else {