Collect garbage before running mjsunit/fast-prototype

test/mjsunit/fast-prototype.js

 // Copyright 2012 the V8 project authors. All rights reserved.
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 // 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
 //       with the distribution.
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 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Flags: --allow-natives-syntax
+// Flags: --allow-natives-syntax --expose-gc
 
 // TODO(mstarzinger): This test does not succeed when GCs happen in
 // between prototype transitions, we disable GC stress for now.
 // Flags: --noincremental-marking
 
 // Check that objects that are used for prototypes are in the fast mode.
 
 function Super() {
 }
 
@@ skipping 38 matching lines @@
     AddProps(proto);
     // After we add all those properties it went slow mode again :-(
     assertFalse(%HasFastProperties(proto));
   }
   if (same_map_as && !add_first) {
     assertTrue(%HaveSameMap(same_map_as, proto));
   }
   return proto;
 }
 
+// TODO(mstarzinger): This test fails easily if gc happens at the wrong time.
+gc();
 
 for (var i = 0; i < 4; i++) {
   var set__proto__ = ((i & 1) != 0);
   var use_new = ((i & 2) != 0);
 
   test(use_new, true, set__proto__);
 
   var last = test(use_new, false, set__proto__);
   test(use_new, false, set__proto__, last);
 }
@@ skipping 11 matching lines @@
   assertTrue(key == 'a');
   break;
 }
 assertFalse(%HasFastProperties(x));
 x.d = 4;
 assertFalse(%HasFastProperties(x));
 for (key in x) {
   assertTrue(key == 'a');
   break;
 }