cerc-io/solidity
16
0
Fork 0
mirror of https://github.com/ethereum/solidity synced 2023-10-03 13:03:40 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Take inlined function calls into account when collecting touched variables

Browse Source
This commit is contained in:
Leonardo Alt 2019-03-25 15:01:07 +01:00
parent 6f9b69ebc3
commit 1d63b97857
2 changed files with 18 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
Changelog.md
View File

@ -7,6 +7,7 @@ Compiler Features:
Bugfixes:
* SMTChecker: SSA control-flow did not take into account state variables that were modified inside inlined functions that were called inside branches.

23
libsolidity/formal/VariableUsage.cpp
View File

@ -17,6 +17,8 @@
#include <libsolidity/formal/VariableUsage.h>
#include <libsolidity/formal/SMTChecker.h>
#include <libsolidity/ast/ASTVisitor.h>
using namespace std;
@ -27,17 +29,19 @@ VariableUsage::VariableUsage(ASTNode const& _node)
{
auto nodeFun = [&](ASTNode const& n) -> bool
{
if (Identifier const* identifier = dynamic_cast<decltype(identifier)>(&n))
if (auto identifier = dynamic_cast<Identifier const*>(&n))
{
Declaration const* declaration = identifier->annotation().referencedDeclaration;
solAssert(declaration, "");
if (VariableDeclaration const* varDecl = dynamic_cast<VariableDeclaration const*>(declaration))
if (
identifier->annotation().lValueRequested &&
varDecl->annotation().type->isValueType()
)
if (identifier->annotation().lValueRequested)
m_touchedVariable[&n] = varDecl;
}
else if (auto funCall = dynamic_cast<FunctionCall const*>(&n))
{
if (FunctionDefinition const* funDef = SMTChecker::inlinedFunctionCallToDefinition(*funCall))
m_children[&n].push_back(funDef);
}
return true;
};
auto edgeFun = [&](ASTNode const& _parent, ASTNode const& _child)
@ -56,6 +60,7 @@ vector<VariableDeclaration const*> VariableUsage::touchedVariables(ASTNode const
return {};
set<VariableDeclaration const*> touched;
set<ASTNode const*> visitedFunctions;
vector<ASTNode const*> toVisit;
toVisit.push_back(&_node);
@ -63,10 +68,16 @@ vector<VariableDeclaration const*> VariableUsage::touchedVariables(ASTNode const
{
ASTNode const* n = toVisit.back();
toVisit.pop_back();
if (auto funDef = dynamic_cast<FunctionDefinition const*>(n))
visitedFunctions.insert(funDef);
if (m_children.count(n))
{
solAssert(!m_touchedVariable.count(n), "");
toVisit += m_children.at(n);
for (auto const& child: m_children.at(n))
if (!visitedFunctions.count(child))
toVisit.push_back(child);
}
else
{