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			30 lines
		
	
	
		
			787 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			30 lines
		
	
	
		
			787 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
| // Copyright 2014 the V8 project authors. All rights reserved.
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| // Use of this source code is governed by a BSD-style license that can be
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| // found in the LICENSE file.
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| 
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| // Flags: --allow-natives-syntax
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| 
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| function foo(x) {
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|   var k = "value";
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|   return x[k] = 1;
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| }
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| var obj = {};
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| Object.defineProperty(obj, "value", {set: function(x) { throw "nope"; }});
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| try { foo(obj); } catch(e) {}
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| try { foo(obj); } catch(e) {}
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| %OptimizeFunctionOnNextCall(foo);
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| try { foo(obj); } catch(e) {}
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| 
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| function bar(x) {
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|   var k = "value";
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|   return (x[k] = 1) ? "ok" : "nope";
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| }
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| var obj2 = {};
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| Object.defineProperty(obj2, "value",
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|     {set: function(x) { throw "nope"; return true; } });
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| 
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| try { bar(obj2); } catch(e) {}
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| try { bar(obj2); } catch(e) {}
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| %OptimizeFunctionOnNextCall(bar);
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| try { bar(obj2); } catch(e) {}
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