Merge pull request #3689 from xeno-by/ticket/8523

makes bundles friendly to -Ywarn-dead-code

3 files changed, 12 insertions, 1 deletions

diff --git a/src/compiler/scala/reflect/macros/compiler/DefaultMacroCompiler.scala b/src/compiler/scala/reflect/macros/compiler/DefaultMacroCompiler.scala
index 1413065a27..a13a778b2f 100644
--- a/src/compiler/scala/reflect/macros/compiler/DefaultMacroCompiler.scala
+++ b/src/compiler/scala/reflect/macros/compiler/DefaultMacroCompiler.scala
@@ -53,7 +53,7 @@ abstract class DefaultMacroCompiler extends Resolvers
         (EmptyTree, TermName(""), Nil)
     }
     val bundleImplRef = MacroImplRefCompiler(
-      atPos(macroDdef.rhs.pos)(gen.mkTypeApply(Select(New(maybeBundleRef, List(List(Ident(Predef_???)))), methName), targs)),
+      atPos(macroDdef.rhs.pos)(gen.mkTypeApply(Select(New(maybeBundleRef, List(List(Literal(Constant(null))))), methName), targs)),
       isImplBundle = true
     )
     val vanillaResult = tryCompile(vanillaImplRef)
diff --git a/test/files/pos/t8523.flags b/test/files/pos/t8523.flags
new file mode 100644
index 0000000000..c7d406c649
--- /dev/null
+++ b/test/files/pos/t8523.flags
@@ -0,0 +1 @@
+-Ywarn-dead-code -Xfatal-warnings
\ No newline at end of file
diff --git a/test/files/pos/t8523.scala b/test/files/pos/t8523.scala
new file mode 100644
index 0000000000..dfcb35404d
--- /dev/null
+++ b/test/files/pos/t8523.scala
@@ -0,0 +1,10 @@
+import scala.language.experimental.macros
+import scala.reflect.macros.blackbox.Context
+
+class Impl(val c: Context) {
+  def impl: c.Tree = ???
+}
+
+object Macros {
+  def foo: Any = macro Impl.impl
+}
\ No newline at end of file