Require and target Java 8

 - Require Java 8 in ant build
 - use -source 1.8 and -target 1.8 for javac
 - Default scalac's -target to `jvm-1.8`, ignore and deprecate attempts
   to use `jvm-1.{6.7}`
 - Remove fragile javap-app test. The feature itself is slated for removal.
 - Remove obsolete Java6 checkfile
 - Adapt DCE tests
   - Remove deprecated/redundant -target:jvm-1.6 from flags where the
     intent was to trigger generation of stack map frames.
   - Remove tests with -target:jvm-1.5 that tested without stack
     map frames
 - Ignore OpenJDK JVM warnings (via test/[files|scaladoc]/filters).

13 files changed, 10 insertions, 157 deletions

diff --git a/test/files/filters b/test/files/filters
index 51a7507848..e91ca0eb36 100644
--- a/test/files/filters
+++ b/test/files/filters
@@ -1,6 +1,7 @@
 #
 #Java HotSpot(TM) 64-Bit Server VM warning: Failed to reserve shared memory (errno = 28).
 Java HotSpot\(TM\) .* warning:
+OpenJDK .* warning:
 # Hotspot receiving VM options through the $_JAVA_OPTIONS
 # env variable outputs them on stderr
 Picked up _JAVA_OPTIONS:
diff --git a/test/files/neg/deprecated-target.check b/test/files/neg/deprecated-target.check
new file mode 100644
index 0000000000..307d3d25ab
--- /dev/null
+++ b/test/files/neg/deprecated-target.check
@@ -0,0 +1,4 @@
+warning: -target is deprecated: -target:jvm-1.7 is deprecated, forcing use of jvm-1.8
+error: No warnings can be incurred under -Xfatal-warnings.
+one warning found
+one error found
diff --git a/test/files/neg/deprecated-target.flags b/test/files/neg/deprecated-target.flags
new file mode 100644
index 0000000000..458ded8123
--- /dev/null
+++ b/test/files/neg/deprecated-target.flags
@@ -0,0 +1 @@
+-target:jvm-1.7 -deprecation -Xfatal-warnings
diff --git a/test/files/neg/deprecated-target.scala b/test/files/neg/deprecated-target.scala
new file mode 100644
index 0000000000..9dccdd5e59
--- /dev/null
+++ b/test/files/neg/deprecated-target.scala
@@ -0,0 +1 @@
+class C
\ No newline at end of file
diff --git a/test/files/neg/t6289.check b/test/files/neg/t6289.check
index 989932750f..7b2b4b2d32 100644
--- a/test/files/neg/t6289.check
+++ b/test/files/neg/t6289.check
@@ -1,9 +1,3 @@
-#partest java6
-t6289/J.java:2: method does not override or implement a method from a supertype
-  @Override public void foo() { }
-  ^
-1 error
-#partest !java6
 t6289/J.java:2: error: method does not override or implement a method from a supertype
   @Override public void foo() { }
   ^
diff --git a/test/files/run/nothingTypeDce.flags b/test/files/run/nothingTypeDce.flags
index d85321ca0e..fde52cc7df 100644
--- a/test/files/run/nothingTypeDce.flags
+++ b/test/files/run/nothingTypeDce.flags
@@ -1 +1 @@
--target:jvm-1.6 -Ybackend:GenBCode -Yopt:unreachable-code
+-Ybackend:GenBCode -Yopt:unreachable-code
diff --git a/test/files/run/nothingTypeDce.scala b/test/files/run/nothingTypeDce.scala
index 5f3692fd33..92d3ca6f89 100644
--- a/test/files/run/nothingTypeDce.scala
+++ b/test/files/run/nothingTypeDce.scala
@@ -1,7 +1,6 @@
 // See comment in BCodeBodyBuilder
 
-// -target:jvm-1.6 -Ybackend:GenBCode -Yopt:unreachable-code
-// target enables stack map frames generation
+// -Ybackend:GenBCode -Yopt:unreachable-code
 
 class C {
   // can't just emit a call to ???, that returns value of type Nothing$ (not Int).
diff --git a/test/files/run/nothingTypeNoFramesNoDce.check b/test/files/run/nothingTypeNoFramesNoDce.check
deleted file mode 100644
index b1d08b45ff..0000000000
--- a/test/files/run/nothingTypeNoFramesNoDce.check
+++ /dev/null
@@ -1 +0,0 @@
-warning: -target:jvm-1.5 is deprecated: use target for Java 1.6 or above.
diff --git a/test/files/run/nothingTypeNoFramesNoDce.flags b/test/files/run/nothingTypeNoFramesNoDce.flags
deleted file mode 100644
index a035c86179..0000000000
--- a/test/files/run/nothingTypeNoFramesNoDce.flags
+++ /dev/null
@@ -1 +0,0 @@
--target:jvm-1.5 -Ybackend:GenBCode -Yopt:l:none -deprecation
diff --git a/test/files/run/nothingTypeNoFramesNoDce.scala b/test/files/run/nothingTypeNoFramesNoDce.scala
deleted file mode 100644
index 3d1298303a..0000000000
--- a/test/files/run/nothingTypeNoFramesNoDce.scala
+++ /dev/null
@@ -1,61 +0,0 @@
-// See comment in BCodeBodyBuilder
-
-// -target:jvm-1.5 -Ybackend:GenBCode -Yopt:l:none
-// target disables stack map frame generation. in this mode, the ClssWriter just emits dead code as is.
-
-class C {
-  // can't just emit a call to ???, that returns value of type Nothing$ (not Int).
-  def f1: Int = ???
-
-  def f2: Int = throw new Error("")
-
-  def f3(x: Boolean) = {
-    var y = 0
-    // cannot assign an object of type Nothing$ to Int
-    if (x) y = ???
-    else   y = 1
-    y
-  }
-
-  def f4(x: Boolean) = {
-    var y = 0
-    // tests that whatever is emitted after the throw is valid (what? depends on opts, presence of stack map frames)
-    if (x) y = throw new Error("")
-    else   y = 1
-    y
-  }
-
-  def f5(x: Boolean) = {
-    // stack heights need to be the smae. ??? looks to the jvm like returning a value of
-    // type Nothing$, need to drop or throw it.
-    println(
-      if (x) { ???; 10 }
-      else 20
-    )
-  }
-
-  def f6(x: Boolean) = {
-    println(
-      if (x) { throw new Error(""); 10 }
-      else 20
-    )
-  }
-
-  def f7(x: Boolean) = {
-    println(
-      if (x) throw new Error("")
-      else 20
-    )
-  }
-
-  def f8(x: Boolean) = {
-    println(
-      if (x) throw new Error("")
-      else 20
-    )
-  }
-}
-
-object Test extends App {
-  new C()
-}
diff --git a/test/files/run/nothingTypeNoOpt.flags b/test/files/run/nothingTypeNoOpt.flags
index b3b518051b..d3e4d61e19 100644
--- a/test/files/run/nothingTypeNoOpt.flags
+++ b/test/files/run/nothingTypeNoOpt.flags
@@ -1 +1 @@
--target:jvm-1.6 -Ybackend:GenBCode -Yopt:l:none
+-Ybackend:GenBCode -Yopt:l:none
diff --git a/test/files/run/repl-javap-app.check b/test/files/run/repl-javap-app.check
deleted file mode 100644
index eb3718f44b..0000000000
--- a/test/files/run/repl-javap-app.check
+++ /dev/null
@@ -1,63 +0,0 @@
-#partest java6
-Welcome to Scala
-Type in expressions to have them evaluated.
-Type :help for more information.
-
-scala> :javap -app MyApp$
-public final void delayedEndpoint$MyApp$1();
-  Code:
-   Stack=2, Locals=1, Args_size=1
-   0:	getstatic	#XX; //Field scala/Console$.MODULE$:Lscala/Console$;
-   3:	ldc	#XX; //String Hello, delayed world.
-   5:	invokevirtual	#XX; //Method scala/Console$.println:(Ljava/lang/Object;)V
-   8:	return
-  LocalVariableTable: 
-   Start  Length  Slot  Name   Signature
-   0      9      0    this       LMyApp$;
-
-scala> :quit
-#partest java7
-Welcome to Scala
-Type in expressions to have them evaluated.
-Type :help for more information.
-
-scala> :javap -app MyApp$
-  public final void delayedEndpoint$MyApp$1();
-    flags: ACC_PUBLIC, ACC_FINAL
-    Code:
-      stack=2, locals=1, args_size=1
-         0: getstatic     #XX                 // Field scala/Console$.MODULE$:Lscala/Console$;
-         3: ldc           #XX                 // String Hello, delayed world.
-         5: invokevirtual #XX                 // Method scala/Console$.println:(Ljava/lang/Object;)V
-         8: return        
-      LocalVariableTable:
-        Start  Length  Slot  Name   Signature
-               0       9     0  this   LMyApp$;
-      LineNumberTable:
-        line 5: 0
-}
-
-scala> :quit
-#partest java8
-Welcome to Scala
-Type in expressions to have them evaluated.
-Type :help for more information.
-
-scala> :javap -app MyApp$
-  public final void delayedEndpoint$MyApp$1();
-    descriptor: ()V
-    flags: ACC_PUBLIC, ACC_FINAL
-    Code:
-      stack=2, locals=1, args_size=1
-         0: getstatic     #XX                 // Field scala/Console$.MODULE$:Lscala/Console$;
-         3: ldc           #XX                 // String Hello, delayed world.
-         5: invokevirtual #XX                 // Method scala/Console$.println:(Ljava/lang/Object;)V
-         8: return        
-      LocalVariableTable:
-        Start  Length  Slot  Name   Signature
-            0       9     0  this   LMyApp$;
-      LineNumberTable:
-        line 5: 0
-}
-
-scala> :quit
diff --git a/test/files/run/repl-javap-app.scala b/test/files/run/repl-javap-app.scala
deleted file mode 100644
index ad6076c2d5..0000000000
--- a/test/files/run/repl-javap-app.scala
+++ /dev/null
@@ -1,21 +0,0 @@
-
-import scala.tools.partest.ReplTest
-
-object MyApp extends App {
-  Console println "Hello, delayed world."
-}
-
-object Test extends ReplTest {
-  def code = ":javap -app MyApp$"
-
-  override def welcoming = true
-
-  // The constant pool indices are not the same for GenASM / GenBCode, so
-  // replacing the exact numbers by XX.
-  lazy val hasConstantPoolRef = """(.*)(#\d\d)(.*)""".r
-
-  override def normalize(s: String) = s match {
-    case hasConstantPoolRef(start, ref, end) => start + "#XX" + end
-    case _ => super.normalize(s)
-  }
-}