Made -Xfatal-warnings less immediately fatal.

Instead of changing warnings to errors mid-stream, at the end of
a run I check for condition "no errors, some warnings, and fatal
warnings" and then generate an error at that point.  This is
necessary to test for some warnings which come from later stages.

1 files changed, 5 insertions, 3 deletions

diff --git a/test/files/neg/overloaded-implicit.check b/test/files/neg/overloaded-implicit.check
index bdbe6a89d5..ca0870705d 100644
--- a/test/files/neg/overloaded-implicit.check
+++ b/test/files/neg/overloaded-implicit.check
@@ -1,7 +1,9 @@
-overloaded-implicit.scala:2: error: parameterized overloaded implicit methods are not visible as view bounds
+overloaded-implicit.scala:2: warning: parameterized overloaded implicit methods are not visible as view bounds
   implicit def imp1[T](x: List[T]): Map[T, T] = Map()
                ^
-overloaded-implicit.scala:3: error: parameterized overloaded implicit methods are not visible as view bounds
+overloaded-implicit.scala:3: warning: parameterized overloaded implicit methods are not visible as view bounds
   implicit def imp1[T](x: Set[T]): Map[T, T] = Map()
                ^
-two errors found
+error: No warnings can be incurred under -Xfatal-warnings.
+two warnings found
+one error found