Added a system property which disables stack tr...

Added a system property which disables stack trace suppression. (At
present it is the very terse -Dscala.control.no-trace-suppression.)
This makes zero-output crashes involving things like MissingType
significantly less maddening. It would behoove us to have a central
naming scheme for such properties. Review by community.

1 files changed, 5 insertions, 4 deletions

diff --git a/src/compiler/scala/tools/nsc/Main.scala b/src/compiler/scala/tools/nsc/Main.scala
index ff197a125c..de1d148a36 100644
--- a/src/compiler/scala/tools/nsc/Main.scala
+++ b/src/compiler/scala/tools/nsc/Main.scala
@@ -109,11 +109,12 @@ object Main extends AnyRef with EvalLoop {
         }
       }
       catch {
-        case FatalError(msg)              =>
-          reporter.error(null, "fatal error: " + msg)
-        case ex if compiler.opt.richExes  =>
+        case ex =>
           compiler.logThrowable(ex)
-          throw ex
+          ex match {
+            case FatalError(msg)  => reporter.error(null, "fatal error: " + msg)
+            case _                => throw ex
+          }
       }
     }
   }