Treat stack overflows specially when reporting unhandled exceptions.

lib/compiler/implementation/compiler.dart

Index: lib/compiler/implementation/compiler.dart
diff --git a/lib/compiler/implementation/compiler.dart b/lib/compiler/implementation/compiler.dart
index 110d9d70608650a030bc9aa81822086d5f6a87b8..c4da37ca10402c7c3e13c30d25c9bca6253b9b1f 100644
--- a/lib/compiler/implementation/compiler.dart
+++ b/lib/compiler/implementation/compiler.dart
@@ -152,6 +152,10 @@ class Compiler implements DiagnosticListener {
       return f();
     } catch (CompilerCancelledException ex) {
       throw;
+    } catch (StackOverflowException ex) {
+      // We cannot report anything useful in this case, because we
+      // do not have enough stack space.
+      throw;
     } catch (var ex) {
       unhandledExceptionOnElement(element);
       throw;