Type check try statements

sdk/lib/_internal/compiler/implementation/compiler.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of dart2js;
 
 /**
  * If true, print a warning for each method that was resolved, but not
  * compiled.
  */
@@ skipping 300 matching lines @@
   ClassElement numClass;
   ClassElement intClass;
   ClassElement doubleClass;
   ClassElement stringClass;
   ClassElement functionClass;
   ClassElement nullClass;
   ClassElement listClass;
   ClassElement typeClass;
   ClassElement mapClass;
   ClassElement symbolClass;
+  ClassElement stackTraceClass;
 
   // Initialized after mirrorSystemClass has been resolved.
   FunctionElement symbolConstructor;
 
   // Initialized when dart:mirrors is loaded.
   ClassElement mirrorSystemClass;
 
   // Initialized after mirrorSystemClass has been resolved.
   FunctionElement mirrorSystemGetNameFunction;
 
@@ skipping 342 matching lines @@
     objectClass = lookupCoreClass('Object');
     boolClass = lookupCoreClass('bool');
     numClass = lookupCoreClass('num');
     intClass = lookupCoreClass('int');
     doubleClass = lookupCoreClass('double');
     stringClass = lookupCoreClass('String');
     functionClass = lookupCoreClass('Function');
     listClass = lookupCoreClass('List');
     typeClass = lookupCoreClass('Type');
     mapClass = lookupCoreClass('Map');
+    stackTraceClass = lookupCoreClass('StackTrace');
     if (!missingCoreClasses.isEmpty) {
       internalErrorOnElement(coreLibrary,
           'dart:core library does not contain required classes: '
           '$missingCoreClasses');
     }
 
     // The Symbol class may not exist during unit testing.
     // TODO(ahe): It is possible that we have to require the presence
     // of Symbol as we change how we implement noSuchMethod.
     symbolClass = lookupCoreClass('Symbol');
@@ skipping 409 matching lines @@
   }
 
   SourceSpan spanFromNode(Node node, [Uri uri]) {
     return spanFromTokens(node.getBeginToken(), node.getEndToken(), uri);
   }
 
   SourceSpan spanFromElement(Element element) {
     if (Elements.isErroneousElement(element)) {
       element = element.enclosingElement;
     }
-    if (element.position() == null && !element.isCompilationUnit()) {
+    if (element.position() == null &&
+        !element.isLibrary() &&
+        !element.isCompilationUnit()) {
       // Sometimes, the backend fakes up elements that have no
       // position. So we use the enclosing element instead. It is
       // not a good error location, but cancel really is "internal
       // error" or "not implemented yet", so the vicinity is good
       // enough for now.
       element = element.enclosingElement;
       // TODO(ahe): I plan to overhaul this infrastructure anyways.
     }
     if (element == null) {
       element = currentElement;
@@ skipping 205 matching lines @@
 
   void close() {}
 
   toString() => name;
 
   /// Convenience method for getting an [api.CompilerOutputProvider].
   static NullSink outputProvider(String name, String extension) {
     return new NullSink('$name.$extension');
   }
 }