the scanner is now less eager about deprecations

When healing braces it isn't very useful to report deprecation warnings,
especially since this process is just simple context-free skimming, which
can't know about what positions can accept what identifiers.

Backport from https://github.com/scala/scala/pull/1807.
Original commit is https://github.com/scala/scala/commit/e5d34d70499504e085ddf957c1c818ffb63f4e8d.

3 files changed, 20 insertions, 0 deletions

diff --git a/test/files/neg/macro-false-deprecation-warning.check b/test/files/neg/macro-false-deprecation-warning.check
new file mode 100644
index 0000000000..7d56505ec4
--- /dev/null
+++ b/test/files/neg/macro-false-deprecation-warning.check
@@ -0,0 +1,4 @@
+Impls_Macros_1.scala:5: error: illegal start of simple expression
+}
+^
+one error found
diff --git a/test/files/neg/macro-false-deprecation-warning.flags b/test/files/neg/macro-false-deprecation-warning.flags
new file mode 100644
index 0000000000..cd66464f2f
--- /dev/null
+++ b/test/files/neg/macro-false-deprecation-warning.flags
@@ -0,0 +1 @@
+-language:experimental.macros
\ No newline at end of file
diff --git a/test/files/neg/macro-false-deprecation-warning/Impls_Macros_1.scala b/test/files/neg/macro-false-deprecation-warning/Impls_Macros_1.scala
new file mode 100644
index 0000000000..6dc2ea114b
--- /dev/null
+++ b/test/files/neg/macro-false-deprecation-warning/Impls_Macros_1.scala
@@ -0,0 +1,15 @@
+import scala.reflect.macros.Context
+
+object Helper {
+  def unapplySeq[T](x: List[T]): Option[Seq[T]] =
+}
+
+object Macros {
+  def impl[T: c.WeakTypeTag](c: Context)(x: c.Expr[List[T]]) = {
+    c.universe.reify(Helper.unapplySeq(x.splice))
+  }
+
+  object UnapplyMacro {
+    def unapplySeq[T](x: List[T]): Option[Seq[T]] = macro impl[T]
+  }
+}