Uniswap V2 bugs (WasmEdge Revert)

[eee4017]

1. Wasm section size too small
   When copying deploy bytecode, WasmEdge will revert due to OOB
   https://github.com/second-state/uniswap-v2-core/blob/vincent/upgrade_to_solc_0.8.6/contracts/yul/UniswapV2ERC20.yul#L18

This error could be solved by assigning larger memory secion to wasm-ld

wasm-ld --entry main --gc-sections --allow-undefined --export=__heap_base --max-memory=16777216 --initial-memory=16777216 UniswapV2ERC20.o -o UniswapV2ERC20.wasm

2. keccak256 failed
   WasmEdge will revert due to OOB. I guess that this is a bug in keccak256 implementation.
   https://github.com/second-state/uniswap-v2-core/blob/vincent/upgrade_to_solc_0.8.6/contracts/yul/UniswapV2ERC20.yul#L138

The behavior here is strange, since WasmEdge would not stop at the OOB occurs.