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ExprEngine: Handle void* -> int* casts better

This commit is contained in:
Daniel Marjamäki 2019-09-28 15:40:00 +02:00
parent 4138bf7fb3
commit 2e5d663ae9
1 changed files with 35 additions and 2 deletions
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37
lib/exprengine.cpp
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@ -841,6 +841,36 @@ static ExprEngine::ValuePtr executeArrayIndex(const Token *tok, Data &data)
return ExprEngine::ValuePtr();
}
static ExprEngine::ValuePtr executeCast(const Token *tok, Data &data)
{
const Token *expr = tok->astOperand2() ? tok->astOperand2() : tok->astOperand1();
auto val = executeExpression(expr, data);
if (expr->valueType() && expr->valueType()->type == ::ValueType::Type::VOID && expr->valueType()->pointer > 0) {
::ValueType vt(*tok->valueType());
vt.pointer = 0;
auto range = getValueRangeFromValueType(data.getNewSymbolName(), &vt, *data.settings);
if (tok->valueType()->pointer == 0)
return range;
bool uninit = false, null = false;
if (val && val->type == ExprEngine::ValueType::PointerValue) {
null = std::static_pointer_cast<ExprEngine::PointerValue>(val)->null;
uninit = std::static_pointer_cast<ExprEngine::PointerValue>(val)->uninitData;
}
return std::make_shared<ExprEngine::PointerValue>(data.getNewSymbolName(), range, null, uninit);
}
if (val)
// TODO: Cast this..
return val;
return getValueRangeFromValueType(data.getNewSymbolName(), tok->valueType(), *data.settings);
}
static ExprEngine::ValuePtr executeDot(const Token *tok, Data &data)
{
if (!tok->astOperand1() || !tok->astOperand1()->varId())
@ -932,8 +962,11 @@ static ExprEngine::ValuePtr executeExpression(const Token *tok, Data &data)
if (tok->astOperand1() && tok->astOperand2() && tok->str() == "[")
return executeArrayIndex(tok, data);
if (tok->str() == "(" && !tok->isCast())
return executeFunctionCall(tok, data);
if (tok->str() == "(") {
if (!tok->isCast())
return executeFunctionCall(tok, data);
return executeCast(tok, data);
}
if (tok->str() == ".")
return executeDot(tok, data);