More uses of the new try-catch syntax.

pkg/fixnum/test/int_64_vm_test.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.
 
 // A test to compare the results of the fixnum library with the Dart VM
 
 #library('int64vmtest');
 #import('dart:math', prefix: 'Math');
 #source('../intx.dart');
 #source('../int32.dart');
@@ skipping 170 matching lines @@
   }
 
   void _doTestUnary(UnaryOp op, int64 val) {
     int ref = op.ref(val.toInt());
     int64 result64 = op.test(val);
     int result = result64.toInt();
     if (ref != result) {
       Expect.fail("${op.name}: val = $val");
     }
   }
-  
+
   void doTestUnary(UnaryOp op) {
     print("Testing operator ${op.name}");
     for (int i = 0; i < TEST_VALUES.length; i++) {
       _doTestUnary(op, TEST_VALUES[i]);
     }
     for (int i = 0; i < RANDOM_TESTS; i++) {
       int64 randomLong = _randomInt64();
       _doTestUnary(op, randomLong);
     }
   }
-  
+
   void _doTestBinary(BinaryOp op, int64 val0, int64 val1) {
     // print("Test val0 = $val0, val1 = $val1");
     var refException = null;
     int ref = -1;
     try {
       ref = op.ref(val0.toInt(), val1.toInt());
-    } catch (Exception e) {
+    } on Exception catch (e) {
       refException = e;
     }
     var testException = null;
     int result = -2;
     int64 result64;
     try {
       int64 val0_save = new int64._copy(val0);
       int64 val1_save = new int64._copy(val1);
       result64 = op.test(val0, val1);
       result = result64.toInt();
       if (val0 != val0_save) {
         print(
             "Test altered first argument val0 = $val0, val0_save = $val0_save");
       }
       if (val1 != val1_save) {
         print("Test altered second argument");
       }
-    } catch (Exception e) {
+    } on Exception catch (e) {
       testException = e;
     }
     if (testException is IntegerDivisionByZeroException &&
         refException is IntegerDivisionByZeroException) {
     } else if (testException != null || refException != null) {
       Expect.fail("${op.name}: val0 = $val0, val1 = $val1, "
           "testException = $testException, refException = $refException");
       return;
     } else if (ref != result) {
       if ("%" == op.name && ref < 0) {
@@ skipping 79 matching lines @@
       }
     }
     for (int i = 0; i < RANDOM_TESTS; i++) {
       int64 randomLong = _randomInt64();
       for (int shift = -64; shift <= 64; shift++) {
         _doTestShift(op, randomLong, shift);
       }
     }
   }
 }