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Merge pull request #465 from chriseth/fixindexaccess

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Clean higher order bits before array index access.
This commit is contained in:
Bob Summerwill
2016-03-31 13:46:35 -03:00
parent 9fbd5c3215 2c29492227
commit 15a4f4d322
2 changed files with 18 additions and 0 deletions
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libsolidity/codegen/ExpressionCompiler.cpp
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@@ -1069,6 +1069,7 @@ bool ExpressionCompiler::visit(IndexAccess const& _indexAccess)
solAssert(_indexAccess.indexExpression(), "Index expression expected.");
_indexAccess.indexExpression()->accept(*this);
utils().convertType(*_indexAccess.indexExpression()->annotation().type, IntegerType(256), true);
// stack layout: <base_ref> [<length>] <index>
ArrayUtils(m_context).accessIndex(arrayType);
switch (arrayType.location())
@@ -1104,6 +1105,7 @@ bool ExpressionCompiler::visit(IndexAccess const& _indexAccess)
solAssert(_indexAccess.indexExpression(), "Index expression expected.");
_indexAccess.indexExpression()->accept(*this);
utils().convertType(*_indexAccess.indexExpression()->annotation().type, IntegerType(256), true);
// stack layout: <value> <index>
// check out-of-bounds access
m_context << u256(fixedBytesType.numBytes());