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			23 lines
		
	
	
		
			527 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			23 lines
		
	
	
		
			527 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
| // Copyright 2018 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 --expose-gc
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| 
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| 
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| class Derived extends RegExp {
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|   constructor(a) {
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|     // Syntax Error
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|     const a = 1;
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|   }
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| }
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| 
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| let o = Reflect.construct(RegExp, [], Derived);
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| %HeapObjectVerify(o);
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| // Check that we can properly access lastIndex.
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| assertEquals(o.lastIndex, 0);
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| o.lastIndex = 1;
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| assertEquals(o.lastIndex, 1);
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| o.lastIndex = 0;
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| gc();
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