Replace Throwable catches with NonFatal

Previously, stackoverflows led to infinite loops because the catch
immediately threw another stack overflow. Anyway, one should never
catch Throwable.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/dotty/tools/dotc/typer/FrontEnd.scala b/src/dotty/tools/dotc/typer/FrontEnd.scala
index d276792e7..f6f68d736 100644
--- a/src/dotty/tools/dotc/typer/FrontEnd.scala
+++ b/src/dotty/tools/dotc/typer/FrontEnd.scala
@@ -8,6 +8,7 @@ import dotty.tools.dotc.parsing.JavaParsers.JavaParser
 import parsing.Parsers.Parser
 import config.Printers._
 import util.Stats._
+import scala.util.control.NonFatal
 
 class FrontEnd extends Phase {
 
@@ -16,7 +17,7 @@ class FrontEnd extends Phase {
   def monitor(doing: String)(body: => Unit)(implicit ctx: Context) =
     try body
     catch {
-      case ex: Throwable =>
+      case NonFatal(ex) =>
         println(s"exception occured while $doing ${ctx.compilationUnit}")
         throw ex
     }