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				https://github.com/ethereum/solidity
				synced 2023-10-03 13:03:40 +00:00 
			
		
		
		
	
		
			
				
	
	
		
			28 lines
		
	
	
		
			720 B
		
	
	
	
		
			Solidity
		
	
	
	
	
	
			
		
		
	
	
			28 lines
		
	
	
		
			720 B
		
	
	
	
		
			Solidity
		
	
	
	
	
	
| contract C {
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|     function f(string calldata x) external returns (bytes memory r) {
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|         uint mptr;
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|         assembly {
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|             // dirty memory
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|             mptr := mload(0x40)
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|             for { let i := mptr } lt(i, add(mptr, 0x0100)) { i := add(i, 32) }
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|             {
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|                 mstore(i, sub(0, 1))
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|             }
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|         }
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|         r = abi.encode(x);
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|         assembly {
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|             // assert that we dirtied the memory that was encoded to
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|             if iszero(eq(mptr, r)) {
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|                 revert(0, 0)
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|             }
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|         }
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|     }
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|     function test() external returns (bytes memory) {
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|         return this.f("abc");
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|     }
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| }
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| // ====
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| // EVMVersion: >homestead
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| // ----
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| // test() -> 0x20, 0x60, 0x20, 3, "abc"
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