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Merge pull request #8008 from ethereum/large-code

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Issue warning if codesize exceeds EIP-170 limits
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chriseth 2020-01-08 09:48:59 +01:00 committed by GitHub
commit d1a7ff0fbc
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3 changed files with 26 additions and 1 deletions
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2
Changelog.md
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@ -4,7 +4,7 @@ Language Features:
Compiler Features:
* General: Raise warning if runtime bytecode exceeds 24576 bytes (a limit introduced in Spurious Dragon).
Bugfixes:

15
libsolidity/interface/CompilerStack.cpp
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@ -1049,6 +1049,21 @@ void CompilerStack::compileContract(
solAssert(false, "Assembly exception for deployed bytecode");
}
// Throw a warning if EIP-170 limits are exceeded:
// If contract creation initialization returns data with length of more than 0x6000 (214 + 213) bytes,
// contract creation fails with an out of gas error.
if (
m_evmVersion >= langutil::EVMVersion::spuriousDragon() &&
compiledContract.runtimeObject.bytecode.size() > 0x6000
)
m_errorReporter.warning(
_contract.location(),
"Contract code size exceeds 24576 bytes (a limit introduced in Spurious Dragon). "
"This contract may not be deployable on mainnet. "
"Consider enabling the optimizer (with a low \"runs\" value!), "
"turning off revert strings, or using libraries."
);
_otherCompilers[compiledContract.contract] = compiler;
}

10
test/libsolidity/syntaxTests/bytecode_too_large.sol Normal file
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