From c11cf0b6c55cc2ec15820dceb6ba825726deed88 Mon Sep 17 00:00:00 2001
From: Jason Zaugg <jzaugg@gmail.com>
Date: Wed, 13 Feb 2013 17:01:36 +0100
Subject: SI-7120 Erasure must honor typeref prefixes

Erasure was discarding these, which led to unnecessarily
wide types in quite particular circumstances. This showed
up as a double definition error in the reported bug when the
bridge method clashed with the erased signature.
---
 test/files/run/t7120.check           |  1 +
 test/files/run/t7120/Base_1.scala    | 10 ++++++++++
 test/files/run/t7120/Derived_2.scala |  9 +++++++++
 test/files/run/t7120/Run_3.scala     |  3 +++
 test/files/run/t7120b.check          |  2 ++
 test/files/run/t7120b.scala          | 27 +++++++++++++++++++++++++++
 6 files changed, 52 insertions(+)
 create mode 100644 test/files/run/t7120.check
 create mode 100644 test/files/run/t7120/Base_1.scala
 create mode 100644 test/files/run/t7120/Derived_2.scala
 create mode 100644 test/files/run/t7120/Run_3.scala
 create mode 100644 test/files/run/t7120b.check
 create mode 100644 test/files/run/t7120b.scala

(limited to 'test/files')

diff --git a/test/files/run/t7120.check b/test/files/run/t7120.check
new file mode 100644
index 0000000000..45a4fb75db
--- /dev/null
+++ b/test/files/run/t7120.check
@@ -0,0 +1 @@
+8
diff --git a/test/files/run/t7120/Base_1.scala b/test/files/run/t7120/Base_1.scala
new file mode 100644
index 0000000000..be07b4f34f
--- /dev/null
+++ b/test/files/run/t7120/Base_1.scala
@@ -0,0 +1,10 @@
+// This bug doesn't depend on separate compilation,
+// in the interests of minimizing the log output during
+// debugging this problem, I've split the compilation.
+
+case class Container( v: String )
+
+trait Base[ T <: AnyRef ] {
+  type UserType = T
+  protected def defect: PartialFunction[ UserType, String ]
+}
diff --git a/test/files/run/t7120/Derived_2.scala b/test/files/run/t7120/Derived_2.scala
new file mode 100644
index 0000000000..e0de629f82
--- /dev/null
+++ b/test/files/run/t7120/Derived_2.scala
@@ -0,0 +1,9 @@
+trait Derived extends Base[ Container ] {
+  protected def defect = { case c: Container => c.v.toString }
+}
+
+// Erasure was ignoring the prefix `Derived#7001.this` when erasing
+// A1, and consequently used `Object` rather than `Container`, which
+// was only seen because that signature clashed with the bridge method.
+//
+// applyOrElse[A1 <: Derived#7001.this.UserType#7318, B1 >: String](x1: A1)
diff --git a/test/files/run/t7120/Run_3.scala b/test/files/run/t7120/Run_3.scala
new file mode 100644
index 0000000000..95e7f994ff
--- /dev/null
+++ b/test/files/run/t7120/Run_3.scala
@@ -0,0 +1,3 @@
+object Test extends Derived with App {
+  println( defect( Container( "8" ) ) )
+}
diff --git a/test/files/run/t7120b.check b/test/files/run/t7120b.check
new file mode 100644
index 0000000000..aa2f5e7c9f
--- /dev/null
+++ b/test/files/run/t7120b.check
@@ -0,0 +1,2 @@
+public int C$D.foo(java.lang.String)
+public int C$D.foo(java.lang.String)
diff --git a/test/files/run/t7120b.scala b/test/files/run/t7120b.scala
new file mode 100644
index 0000000000..9f6591aa06
--- /dev/null
+++ b/test/files/run/t7120b.scala
@@ -0,0 +1,27 @@
+trait Base[A] { type B = A; }
+class C extends Base[String] {
+  class D {
+    def foo[B1 <: B](b: B1) = 0
+  }
+}
+
+trait BaseHK[M[_], A] { type B = M[A]; }
+object BaseHK { type Id[X] = X }
+class CHK extends BaseHK[BaseHK.Id, String] {
+  class D {
+    def foo[B1 <: B](b: B1) = 0
+  }
+}
+
+
+object Test extends App {
+  val c = new C
+  val d = new c.D()
+  val meth = d.getClass.getMethods.find(_.getName == "foo").get
+  println(meth)
+
+  val chk = new CHK
+  val dhk = new chk.D()
+  val methhk = d.getClass.getMethods.find(_.getName == "foo").get
+  println(methhk)
+}
-- 
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