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[SMTChecker] Fix ICE on index access assignment inside single branches

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Leonardo Alt 2020-05-28 11:26:32 +02:00
parent 79f4a2b476
commit b90fb1cab6
2 changed files with 7 additions and 1 deletions
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1
Changelog.md
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@ -27,6 +27,7 @@ Bugfixes:
* Code Generator: Trigger proper unimplemented errors on certain array copy operations. * Code Generator: Trigger proper unimplemented errors on certain array copy operations.
* SMTChecker: Fix internal error when applying arithmetic operators to fixed point variables. * SMTChecker: Fix internal error when applying arithmetic operators to fixed point variables.
* SMTChecker: Fix internal error when short circuiting Boolean expressions with function calls in state variable initialization. * SMTChecker: Fix internal error when short circuiting Boolean expressions with function calls in state variable initialization.
* SMTChecker: Fix internal error when assigning to index access inside branches.
### 0.6.8 (2020-05-14) ### 0.6.8 (2020-05-14)

7
libsolidity/formal/SMTEncoder.cpp
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@ -361,7 +361,12 @@ void SMTEncoder::endVisit(Assignment const& _assignment)
else if (!smt::isSupportedType(_assignment.annotation().type->category())) else if (!smt::isSupportedType(_assignment.annotation().type->category()))
{ {
// Give it a new index anyway to keep the SSA scheme sound. // Give it a new index anyway to keep the SSA scheme sound.
if (auto varDecl = identifierToVariable(_assignment.leftHandSide()))
Expression const* base = &_assignment.leftHandSide();
if (auto const* indexAccess = dynamic_cast<IndexAccess const*>(base))
base = leftmostBase(*indexAccess);
if (auto varDecl = identifierToVariable(*base))
m_context.newValue(*varDecl); m_context.newValue(*varDecl);
} }
else else