Add test

Run i3005 as a pos-sprecial test that does not do a Ycheck after arrayConstructors.

Author: odersky

compiler/test/dotty/tools/dotc/CompilationTests.scala

@@ -56,6 +56,7 @@ class CompilationTests extends ParallelTesting {
     compileFile("../tests/pos-special/utf8encoded.scala", explicitUTF8) +
     compileFile("../tests/pos-special/utf16encoded.scala", explicitUTF16) +
     compileFile("../tests/pos-special/i3589-b.scala", defaultOptions.and("-Xfatal-warnings")) +
+    compileFile("../tests/pos-special/i3005.scala", depByNameOptions) +
     compileList(
       "compileMixed",
       List(

compiler/test/dotty/tools/vulpix/TestConfiguration.scala

@@ -62,4 +62,7 @@ object TestConfiguration {
   val scala2Mode = defaultOptions and "-language:Scala2"
   val explicitUTF8 = defaultOptions and ("-encoding", "UTF8")
   val explicitUTF16 = defaultOptions and ("-encoding", "UTF16")
+
+  val depByNameOptions = // disable -Ycheck:arrayConstructors
+    TestFlags(classPath, runClassPath, basicDefaultOptions.map(_.replace(",arrayConstructors", "")))
 }