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| author | chriseth <c@ethdev.com> | 2015-04-28 17:31:40 +0800 |
|---|---|---|
| committer | chriseth <c@ethdev.com> | 2015-04-28 17:31:40 +0800 |
| commit | c1983d1bef0df65767485acd18232642917666e0 (patch) | |
| tree | 087f50e6fc435087385e19279a21432499327320 /LValue.cpp | |
| parent | 1087d34a665ad2d3595d8a5259d69e8f3d52eebe (diff) | |
| download | dexon-solidity-c1983d1bef0df65767485acd18232642917666e0.tar.gz dexon-solidity-c1983d1bef0df65767485acd18232642917666e0.tar.zst dexon-solidity-c1983d1bef0df65767485acd18232642917666e0.zip | |
Fix for deleting byte array elements.
Fixes #1759.
Diffstat (limited to 'LValue.cpp')
| -rw-r--r-- | LValue.cpp | 11 |
1 files changed, 3 insertions, 8 deletions
@@ -311,8 +311,6 @@ void StorageByteArrayElement::retrieveValue(SourceLocation const&, bool _remove) void StorageByteArrayElement::storeValue(Type const&, SourceLocation const&, bool _move) const { - //@todo optimize this - // stack: value ref byte_number m_context << u256(31) << eth::Instruction::SUB << u256(0x100) << eth::Instruction::EXP; // stack: value ref (1<<(8*(31-byte_number))) @@ -335,19 +333,16 @@ void StorageByteArrayElement::setToZero(SourceLocation const&, bool _removeRefer { // stack: ref byte_number if (!_removeReference) - m_context << eth::Instruction::SWAP1 << eth::Instruction::DUP2; + m_context << eth::Instruction::DUP2 << eth::Instruction::DUP2; m_context << u256(31) << eth::Instruction::SUB << u256(0x100) << eth::Instruction::EXP; // stack: ref (1<<(8*(31-byte_number))) m_context << eth::Instruction::DUP2 << eth::Instruction::SLOAD; // stack: ref (1<<(8*(31-byte_number))) old_full_value // clear byte in old value - m_context << eth::Instruction::SWAP1 << u256(0xff) << eth::Instruction::MUL << eth::Instruction::AND; + m_context << eth::Instruction::SWAP1 << u256(0xff) << eth::Instruction::MUL; + m_context << eth::Instruction::NOT << eth::Instruction::AND; // stack: ref old_full_value_with_cleared_byte m_context << eth::Instruction::SWAP1 << eth::Instruction::SSTORE; - if (!_removeReference) - m_context << eth::Instruction::SWAP1; - else - m_context << eth::Instruction::POP; } StorageArrayLength::StorageArrayLength(CompilerContext& _compilerContext, const ArrayType& _arrayType): |