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      1 // Copyright 2014 the V8 project authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // Flags: --allow-natives-syntax
      6 
      7 // Test push double as tagged.
      8 var a = [{}];
      9 function f(a) {
     10   a.push(Infinity);
     11 }
     12 
     13 f(a);
     14 f(a);
     15 f(a);
     16 %OptimizeFunctionOnNextCall(f);
     17 f(a);
     18 assertEquals([{}, Infinity, Infinity, Infinity, Infinity], a);
     19