[AST] Dump containsErrors bit for the Type.

Reviewers: sammccall

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D81912
diff --git a/clang/lib/AST/TextNodeDumper.cpp b/clang/lib/AST/TextNodeDumper.cpp
index a365431..0d49c44 100644
--- a/clang/lib/AST/TextNodeDumper.cpp
+++ b/clang/lib/AST/TextNodeDumper.cpp
@@ -202,6 +202,11 @@
   if (SingleStepDesugar != QualType(T, 0))
     OS << " sugar";
 
+  if (T->containsErrors()) {
+    ColorScope Color(OS, ShowColors, ErrorsColor);
+    OS << " contains-errors";
+  }
+
   if (T->isDependentType())
     OS << " dependent";
   else if (T->isInstantiationDependentType())