Fixed overloading in package objects.

Implementing a warning for the behavior described in SI-1987 gave me
enough of a foot in the door to fix it rather than warning about it. I
suppose this is a variation of rubber ducky debugging.

% scalac -Ylog:typer test/files/run/t1987.scala
[log typer] !!! Overloaded package object member resolved incorrectly.
  Discarded: def duh(n: Double): Unit
  Using: val duh: (n: Double)Unit <and> (n: Long)Unit

Review by @odersky.

1 files changed, 62 insertions, 0 deletions

diff --git a/test/files/run/t1987.scala b/test/files/run/t1987.scala
new file mode 100644
index 0000000000..4c278ec6a0
--- /dev/null
+++ b/test/files/run/t1987.scala
@@ -0,0 +1,62 @@
+// a.scala
+// Fri Jan 13 11:31:47 PST 2012
+
+package foo {
+  package object bar {
+    def duh(n: Long)   = println("long")
+    def duh(n: Double) = println("double")
+    
+    def duh2(n: Double) = println("double")
+    def duh2(n: Long)   = println("long")
+  }
+  package bar {
+    object Main {
+      def main(args:Array[String]) {
+        duh(33L)
+        bip.bar.duh(33L)
+        duh(33d)
+        bip.bar.duh(33d)
+        
+        duh2(33L)
+        bip.bar.duh2(33L)
+        duh2(33d)
+        bip.bar.duh2(33d)
+      }
+    }
+  }
+}
+
+package bip {
+  trait Duh {
+    def duh(n: Long)   = println("long")
+    def duh(n: Double) = println("double")
+  }
+  trait Duh2 {
+    def duh2(n: Double) = println("double")
+    def duh2(n: Long)   = println("long")
+  }
+  
+  package object bar extends Duh with Duh2 { }
+  package bar {
+    object Main {
+      def main(args:Array[String]) {
+        duh(33L)
+        bip.bar.duh(33L)
+        duh(33d)
+        bip.bar.duh(33d)
+        
+        duh2(33L)
+        bip.bar.duh2(33L)
+        duh2(33d)
+        bip.bar.duh2(33d)
+      }
+    }
+  }
+}
+
+object Test {
+  def main(args: Array[String]): Unit = {
+    foo.bar.Main.main(null)
+    bip.bar.Main.main(null)
+  }
+}