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Fix inline assembly stack warnings when using variables

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This commit is contained in:
Alex Beregszaszi 2016-11-15 02:53:19 +00:00
parent 58e75c7a48
commit dad33f80dd
2 changed files with 10 additions and 7 deletions
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1
Changelog.md
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@ -7,6 +7,7 @@ Features:
Bugfixes:
* Inline assembly: calculate stack height warning correctly even when local variables are used.
* Parser: disallow empty enum definitions.
* Type checker: disallow conversion between different enum types.

16
libsolidity/inlineasm/AsmCodeGen.cpp
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@ -216,10 +216,18 @@ public:
size_t numVariables = m_state.variables.size();
int deposit = m_state.assembly.deposit();
std::for_each(_block.statements.begin(), _block.statements.end(), boost::apply_visitor(*this));
deposit = m_state.assembly.deposit() - deposit;
// pop variables
while (m_state.variables.size() > numVariables)
{
m_state.assembly.append(solidity::Instruction::POP);
m_state.variables.pop_back();
}
m_state.assembly.setSourceLocation(_block.location);
deposit = m_state.assembly.deposit() - deposit;
// issue warnings for stack height discrepancies
if (deposit < 0)
{
@ -238,12 +246,6 @@ public:
);
}
// pop variables
while (m_state.variables.size() > numVariables)
{
m_state.assembly.append(solidity::Instruction::POP);
m_state.variables.pop_back();
}
}
private: