Fix a number of tests that incorrectly used assertUnreachable.

test/mjsunit/property-load-across-eval.js

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 27 matching lines @@
   function local_function() { return 'local'; }
   const local_const_uninitialized;
   const local_const_initialized = function() { return "const_local"; }
   function f() {
     eval('1');
     assertEquals(1, x);
     try { typeof(asdf); } catch(e) { assertUnreachable(); }
     assertEquals(2, y);
     assertEquals('global', global_function());
     assertEquals('local', local_function());
+    var exception = false;
     try {
       const_uninitialized();
-      assertUnreachable();
     } catch(e) {
-      // Ignore.
+      exception = true;
     }
+    assertTrue(exception);
     assertEquals('const_global', const_initialized());
+    exception = false;
     try {
       local_const_uninitialized();
-      assertUnreachable();
     } catch(e) {
-      // Ignore.
+      exception = true;
     }
+    assertTrue(exception);
     assertEquals('const_local', local_const_initialized());
     function g() {
       assertEquals(1, x);
       try { typeof(asdf); } catch(e) { assertUnreachable(); }
       assertEquals(2, y);
       assertEquals('global', global_function());
       assertEquals('local', local_function());
+      var exception = false;
       try {
         const_uninitialized();
-        assertUnreachable();
       } catch(e) {
-        // Ignore.
+        exception = true;
       }
+      assertTrue(exception);
       assertEquals('const_global', const_initialized());
+      exception = false;
       try {
         local_const_uninitialized();
-        assertUnreachable();
       } catch(e) {
-        // Ignore.
+        exception = true;
       }
+      assertTrue(exception);
       assertEquals('const_local', local_const_initialized());
     }
     g();
   }
   f();
 }
 
 testNoShadowing();
 
 // Test loading across eval calls that do not shadow variables.
@@ skipping 37 matching lines @@
       assertEquals(4, y);
       assertEquals('new_nonglobal', global_function());
       assertEquals('new_local', local_function());
     }
     g();
   }
   f();
 }
 
 testShadowing();