Test for error message on class size overflow

Ensure that the error message for too large classes contains the
class name

Author: lrytz

test/files/run/large_class.check

@@ -0,0 +1,3 @@
+newSource1.scala:1: error: Could not write class BigEnoughToFail because it exceeds JVM code size limits. Class file too large!
+class BigEnoughToFail {
+      ^

test/files/run/large_class.scala

@@ -0,0 +1,27 @@
+import scala.tools.partest._
+import java.io.{Console => _, _}
+
+// a cold run of partest takes about 15s for this test on my laptop
+object Test extends DirectTest {
+  override def extraSettings: String = "-usejavacp -d " + testOutput.path
+
+  def s(n: Int) = "\""+n+"\""
+
+  override def code
+    = s"""
+      |class BigEnoughToFail {
+      |  def m(a: String, b: String, c: String, d: String, e: String, f: String) = null
+      |  ${(1 to 5500) map (n => "def f"+n+" = m("+ s(n+10000)+","+
+                                                    s(n+20000)+","+
+                                                    s(n+30000)+","+
+                                                    s(n+40000)+","+
+                                                    s(n+50000)+","+
+                                                    s(n+60000)+")") mkString ";"}
+      |}""".stripMargin.trim
+
+  override def show(): Unit = {
+    Console.withErr(System.out) {
+      compile()
+    }
+  }
+}