Fix #2230: Add regression test.

2 files changed, 23 insertions, 0 deletions

diff --git a/compiler/test/dotty/tools/dotc/CompilationTests.scala b/compiler/test/dotty/tools/dotc/CompilationTests.scala
index 742b93fae..b3604d38a 100644
--- a/compiler/test/dotty/tools/dotc/CompilationTests.scala
+++ b/compiler/test/dotty/tools/dotc/CompilationTests.scala
@@ -151,6 +151,7 @@ class CompilationTests extends ParallelSummaryReport with ParallelTesting {
     compileFile("../tests/neg/customArgs/nopredef.scala", defaultOptions.and("-Yno-predef")) +
     compileFile("../tests/neg/customArgs/noimports.scala", defaultOptions.and("-Yno-imports")) +
     compileFile("../tests/neg/customArgs/noimports2.scala", defaultOptions.and("-Yno-imports")) +
+    compileFile("../tests/neg/customArgs/overloadsOnAbstractTypes.scala", allowDoubleBindings) +
     compileFile("../tests/neg/tailcall/t1672b.scala", defaultOptions) +
     compileFile("../tests/neg/tailcall/t3275.scala", defaultOptions) +
     compileFile("../tests/neg/tailcall/t6574.scala", defaultOptions) +
diff --git a/tests/neg/customArgs/overloadsOnAbstractTypes.scala b/tests/neg/customArgs/overloadsOnAbstractTypes.scala
new file mode 100644
index 000000000..0c9ed12bb
--- /dev/null
+++ b/tests/neg/customArgs/overloadsOnAbstractTypes.scala
@@ -0,0 +1,22 @@
+
+class Test1 {
+  type A
+  type B <: A
+
+  def foo(): A = ???
+  def foo(): A = ??? // error
+
+  def bar(): A = ???
+  def bar(): B = ??? // error
+}
+
+class Test2 {
+  type A
+  type B <: A
+
+  def foo(x: A) = ???
+  def foo(x: A) = ??? // error
+
+  def bar(x: A) = ???
+  def bar(x: B) = ??? // error
+}