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				https://github.com/ethereum/solidity
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			25 lines
		
	
	
		
			1015 B
		
	
	
	
		
			Solidity
		
	
	
	
	
	
			
		
		
	
	
			25 lines
		
	
	
		
			1015 B
		
	
	
	
		
			Solidity
		
	
	
	
	
	
| abstract contract A {
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| 	function foo() internal virtual returns (uint256);
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| 	function test(uint8 _a) internal virtual returns (uint256);
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| }
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| abstract contract B {
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| 	function foo() internal virtual returns (uint256);
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| 	function test() internal virtual returns (uint256);
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| }
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| abstract contract C {
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| 	function foo() internal virtual returns (uint256);
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| }
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| abstract contract D {
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| 	function foo() internal virtual returns (uint256);
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| 	function test() internal virtual returns (uint256);
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| }
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| abstract contract X is A, B, C, D {
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| 	function test() internal override(B, D, D) virtual returns (uint256);
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| 	function foo() internal override(A, C, B, B, B, D ,D) virtual returns (uint256);
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| }
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| // ----
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| // TypeError 4520: (548-549): Duplicate contract "D" found in override list of "test".
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| // TypeError 4520: (621-622): Duplicate contract "B" found in override list of "foo".
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| // TypeError 4520: (624-625): Duplicate contract "B" found in override list of "foo".
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| // TypeError 4520: (630-631): Duplicate contract "D" found in override list of "foo".
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