Merge pull request #15442 from dotty-staging/fix-15293

Recover from TypeErrors in isErroneous
scala · Jun 15, 2022 · bf026ad · bf026ad
2 parents b3725e5 + 5c3ef81
commit bf026ad
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/compiler/src/dotty/tools/dotc/core/Types.scala b/compiler/src/dotty/tools/dotc/core/Types.scala
@@ -354,7 +354,8 @@ object Types {
      *
      */
     def isErroneous(using Context): Boolean =
-      widen.existsPart(_.isError, forceLazy = false)
+      try widen.existsPart(_.isError, forceLazy = false)
+      catch case ex: TypeError => true
 
     /** Is this type unusable for implicit search or overloading resolution
      *  since it has embedded errors that can match anything? This is weaker and more