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Diffstat (limited to 'test/files/run/t1500.scala')
-rw-r--r-- | test/files/run/t1500.scala | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/test/files/run/t1500.scala b/test/files/run/t1500.scala new file mode 100644 index 0000000000..30c026f70f --- /dev/null +++ b/test/files/run/t1500.scala @@ -0,0 +1,46 @@ +import scala.tools.nsc._ + +object Test { + + /** + * Type inference overlooks constraints posed by type parameters in annotations on types. + */ + + val testCode = """ + + class posingAs[A] extends annotation.TypeConstraint + + def resolve[A,B](x: A @posingAs[B]): B = x.asInstanceOf[B] + + val x = resolve(7: @posingAs[Any]) + + """ + + def main(args: Array[String]) { + + val settings = new Settings() + settings.classpath.value = System.getProperty("java.class.path") + val tool = new interpreter.IMain(settings) + val global = tool.global + + import global._ + import definitions._ + + object checker extends AnnotationChecker { + + /** Check annotations to decide whether tpe1 <:< tpe2 */ + def annotationsConform(tpe1: Type, tpe2: Type): Boolean = { + + tpe1.annotations.forall(a1 => tpe2.annotations.forall(a2 => a1.atp <:< a2.atp)) + + } + } + + global.addAnnotationChecker(checker) + + tool.interpret(testCode) + + } + +} + |