1 files changed, 4 insertions, 2 deletions
diff --git a/test/junit/scala/tools/nsc/backend/jvm/opt/BTypesFromClassfileTest.scala b/test/junit/scala/tools/nsc/backend/jvm/opt/BTypesFromClassfileTest.scala
index 1169871ecd..e7aea71e72 100644
--- a/test/junit/scala/tools/nsc/backend/jvm/opt/BTypesFromClassfileTest.scala
+++ b/test/junit/scala/tools/nsc/backend/jvm/opt/BTypesFromClassfileTest.scala
@@ -2,7 +2,7 @@ package scala.tools.nsc
 package backend.jvm
 package opt
 
-import org.junit.Test
+import org.junit.{Ignore, Test}
 import org.junit.runner.RunWith
 import org.junit.runners.JUnit4
 
@@ -83,7 +83,9 @@ class BTypesFromClassfileTest extends BytecodeTesting {
     sameBType(fromSymbol, fromClassfile)
   }
 
-  @Test
+  // Can be enabled when using 2.12.0-M5 as starr. This test works under a full boostrap, but not
+  // when compiled with M4.
+  @Test @Ignore
   def compareClassBTypes(): Unit = {
     // Note that not only these classes are tested, but also all their parents and all nested
     // classes in their InnerClass attributes.