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Fixed #7260 (ValueType: in C++ the result of 'sint >> unknowntype' has unknown type)

This commit is contained in:
Daniel Marjamäki 2016-01-07 10:46:19 +01:00
parent 88a525aca7
commit a014920280
4 changed files with 36 additions and 31 deletions
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55
lib/symboldatabase.cpp
View File

@ -3607,18 +3607,18 @@ bool SymbolDatabase::isReservedName(const std::string& iName) const
}
static const Token * parsedecl(const Token *type, ValueType * const valuetype, ValueType::Sign defaultSignedness);
static void setValueType(Token *tok, const ValueType &valuetype, ValueType::Sign defaultSignedness);
static void setValueType(Token *tok, const ValueType &valuetype, bool cpp, ValueType::Sign defaultSignedness);
static void setValueType(Token *tok, const Variable &var, ValueType::Sign defaultSignedness)
static void setValueType(Token *tok, const Variable &var, bool cpp, ValueType::Sign defaultSignedness)
{
ValueType valuetype;
valuetype.pointer = var.dimensions().size();
valuetype.typeScope = var.typeScope();
if (parsedecl(var.typeStartToken(), &valuetype, defaultSignedness))
setValueType(tok, valuetype, defaultSignedness);
setValueType(tok, valuetype, cpp, defaultSignedness);
}
static void setValueType(Token *tok, const ValueType &valuetype, ValueType::Sign defaultSignedness)
static void setValueType(Token *tok, const ValueType &valuetype, bool cpp, ValueType::Sign defaultSignedness)
{
tok->setValueType(new ValueType(valuetype));
Token *parent = const_cast<Token *>(tok->astParent());
@ -3628,7 +3628,8 @@ static void setValueType(Token *tok, const ValueType &valuetype, ValueType::Sign
return;
if (Token::Match(parent, "<<|>>")) {
setValueType(parent,valuetype, defaultSignedness);
if (!cpp || (parent->astOperand2() && parent->astOperand2()->valueType() && parent->astOperand2()->valueType()->isIntegral()))
setValueType(parent, *parent->astOperand1()->valueType(), cpp, defaultSignedness);
return;
}
@ -3636,20 +3637,20 @@ static void setValueType(Token *tok, const ValueType &valuetype, ValueType::Sign
ValueType vt(valuetype);
vt.pointer -= 1U;
vt.constness >>= 1;
setValueType(parent, vt, defaultSignedness);
setValueType(parent, vt, cpp, defaultSignedness);
return;
}
if (parent->str() == "*" && !parent->astOperand2() && valuetype.pointer > 0U) {
ValueType vt(valuetype);
vt.pointer -= 1U;
vt.constness >>= 1;
setValueType(parent, vt, defaultSignedness);
setValueType(parent, vt, cpp, defaultSignedness);
return;
}
if (parent->str() == "&" && !parent->astOperand2()) {
ValueType vt(valuetype);
vt.pointer += 1U;
setValueType(parent, vt, defaultSignedness);
setValueType(parent, vt, cpp, defaultSignedness);
return;
}
@ -3663,7 +3664,7 @@ static void setValueType(Token *tok, const ValueType &valuetype, ValueType::Sign
for (std::list<Variable>::const_iterator it = typeScope->varlist.begin(); it != typeScope->varlist.end(); ++it) {
const Variable &var = *it;
if (var.nameToken()->str() == name) {
setValueType(parent, var, defaultSignedness);
setValueType(parent, var, cpp, defaultSignedness);
return;
}
}
@ -3675,30 +3676,30 @@ static void setValueType(Token *tok, const ValueType &valuetype, ValueType::Sign
const ValueType *vt2 = parent->astOperand2() ? parent->astOperand2()->valueType() : nullptr;
if (parent->isArithmeticalOp() && vt2) {
if (vt1->pointer != 0U && vt2->pointer == 0U) {
setValueType(parent, *vt1, defaultSignedness);
setValueType(parent, *vt1, cpp, defaultSignedness);
return;
}
if (vt1->pointer == 0U && vt2->pointer != 0U) {
setValueType(parent, *vt2, defaultSignedness);
setValueType(parent, *vt2, cpp, defaultSignedness);
return;
}
if (vt1->pointer != 0U) { // result is pointer diff
setValueType(parent, ValueType(ValueType::Sign::UNSIGNED, ValueType::Type::INT, 0U, 0U, "ptrdiff_t"), defaultSignedness);
setValueType(parent, ValueType(ValueType::Sign::UNSIGNED, ValueType::Type::INT, 0U, 0U, "ptrdiff_t"), cpp, defaultSignedness);
return;
}
if (vt1->type == ValueType::Type::LONGDOUBLE || vt2->type == ValueType::Type::LONGDOUBLE) {
setValueType(parent, ValueType(ValueType::Sign::UNKNOWN_SIGN, ValueType::Type::LONGDOUBLE, 0U), defaultSignedness);
setValueType(parent, ValueType(ValueType::Sign::UNKNOWN_SIGN, ValueType::Type::LONGDOUBLE, 0U), cpp, defaultSignedness);
return;
}
if (vt1->type == ValueType::Type::DOUBLE || vt2->type == ValueType::Type::DOUBLE) {
setValueType(parent, ValueType(ValueType::Sign::UNKNOWN_SIGN, ValueType::Type::DOUBLE, 0U), defaultSignedness);
setValueType(parent, ValueType(ValueType::Sign::UNKNOWN_SIGN, ValueType::Type::DOUBLE, 0U), cpp, defaultSignedness);
return;
}
if (vt1->type == ValueType::Type::FLOAT || vt2->type == ValueType::Type::FLOAT) {
setValueType(parent, ValueType(ValueType::Sign::UNKNOWN_SIGN, ValueType::Type::FLOAT, 0U), defaultSignedness);
setValueType(parent, ValueType(ValueType::Sign::UNKNOWN_SIGN, ValueType::Type::FLOAT, 0U), cpp, defaultSignedness);
return;
}
}
@ -3733,7 +3734,7 @@ static void setValueType(Token *tok, const ValueType &valuetype, ValueType::Sign
vt.originalTypeName.clear();
}
setValueType(parent, vt, defaultSignedness);
setValueType(parent, vt, cpp, defaultSignedness);
return;
}
}
@ -3788,7 +3789,7 @@ static const Token * parsedecl(const Token *type, ValueType * const valuetype, V
return (type && valuetype->type != ValueType::Type::UNKNOWN_TYPE) ? type : nullptr;
}
void SymbolDatabase::setValueTypeInTokenList(Token *tokens, char defaultSignedness)
void SymbolDatabase::setValueTypeInTokenList(Token *tokens, bool cpp, char defaultSignedness)
{
ValueType::Sign defsign;
if (defaultSignedness == 's' || defaultSignedness == 'S')
@ -3808,7 +3809,7 @@ void SymbolDatabase::setValueTypeInTokenList(Token *tokens, char defaultSignedne
const char suffix = tok->str()[tok->str().size() - 1U];
if (suffix == 'f' || suffix == 'F')
type = ValueType::Type::FLOAT;
::setValueType(tok, ValueType(ValueType::Sign::UNKNOWN_SIGN, type, 0U), defsign);
::setValueType(tok, ValueType(ValueType::Sign::UNKNOWN_SIGN, type, 0U), cpp, defsign);
} else if (MathLib::isInt(tok->str())) {
ValueType::Sign sign = ValueType::Sign::SIGNED;
ValueType::Type type = ValueType::Type::INT;
@ -3821,49 +3822,49 @@ void SymbolDatabase::setValueTypeInTokenList(Token *tokens, char defaultSignedne
if (suffix == 'l' || suffix == 'L')
type = (type == ValueType::Type::INT) ? ValueType::Type::LONG : ValueType::Type::LONGLONG;
}
::setValueType(tok, ValueType(sign, type, 0U), defsign);
::setValueType(tok, ValueType(sign, type, 0U), cpp, defsign);
}
} else if (tok->isComparisonOp())
::setValueType(tok, ValueType(ValueType::Sign::UNKNOWN_SIGN, ValueType::Type::BOOL, 0U), defsign);
::setValueType(tok, ValueType(ValueType::Sign::UNKNOWN_SIGN, ValueType::Type::BOOL, 0U), cpp, defsign);
else if (tok->tokType() == Token::eChar)
::setValueType(tok, ValueType(ValueType::Sign::UNKNOWN_SIGN, ValueType::Type::CHAR, 0U), defsign);
::setValueType(tok, ValueType(ValueType::Sign::UNKNOWN_SIGN, ValueType::Type::CHAR, 0U), cpp, defsign);
else if (tok->tokType() == Token::eString) {
ValueType valuetype(ValueType::Sign::UNKNOWN_SIGN, ValueType::Type::CHAR, 1U, 1U);
if (tok->isLong()) {
valuetype.originalTypeName = "wchar_t";
valuetype.type = ValueType::Type::SHORT;
}
::setValueType(tok, valuetype, defsign);
::setValueType(tok, valuetype, cpp, defsign);
} else if (tok->str() == "(") {
// cast
if (!tok->astOperand2() && Token::Match(tok, "( %name%")) {
ValueType valuetype;
if (Token::simpleMatch(parsedecl(tok->next(), &valuetype, defsign), ")"))
::setValueType(tok, valuetype, defsign);
::setValueType(tok, valuetype, cpp, defsign);
}
// C++ cast
if (tok->astOperand2() && Token::Match(tok->astOperand1(), "static_cast|const_cast|dynamic_cast|reinterpret_cast < %name%") && tok->astOperand1()->linkAt(1)) {
ValueType valuetype;
if (Token::simpleMatch(parsedecl(tok->astOperand1()->tokAt(2), &valuetype, defsign), ">"))
::setValueType(tok, valuetype, defsign);
::setValueType(tok, valuetype, cpp, defsign);
}
// function
else if (tok->previous() && tok->previous()->function() && tok->previous()->function()->retDef) {
ValueType valuetype;
if (Token::simpleMatch(parsedecl(tok->previous()->function()->retDef, &valuetype, defsign), "("))
::setValueType(tok, valuetype, defsign);
::setValueType(tok, valuetype, cpp, defsign);
}
else if (Token::simpleMatch(tok->previous(), "sizeof (")) {
// TODO: use specified size_t type
ValueType valuetype(ValueType::Sign::UNSIGNED, ValueType::Type::LONG, 0U);
valuetype.originalTypeName = "size_t";
setValueType(tok, valuetype, defsign);
setValueType(tok, valuetype, cpp, defsign);
}
} else if (tok->variable()) {
setValueType(tok, *tok->variable(), defsign);
setValueType(tok, *tok->variable(), cpp, defsign);
}
}
}

2
lib/symboldatabase.h
View File

@ -1027,7 +1027,7 @@ public:
void validate() const;
/** Set valuetype in provided tokenlist */
static void setValueTypeInTokenList(Token *tokens, char defaultSignedness);
static void setValueTypeInTokenList(Token *tokens, bool cpp, char defaultSignedness);
private:
friend class Scope;

2
lib/tokenize.cpp
View File

@ -1735,7 +1735,7 @@ bool Tokenizer::simplifyTokens1(const std::string &configuration,
list.createAst();
list.validateAst();
SymbolDatabase::setValueTypeInTokenList(list.front(), _settings->defaultSign);
SymbolDatabase::setValueTypeInTokenList(list.front(), isCPP(), _settings->defaultSign);
ValueFlow::setValues(&list, _symbolDatabase, _errorLogger, _settings);
}

8
test/testsymboldatabase.cpp
View File

@ -3077,12 +3077,12 @@ private:
"}");
}
std::string typeOf(const char code[], const char str[]) {
std::string typeOf(const char code[], const char str[], const char filename[] = "test.cpp") {
Settings s;
s.platform(Settings::Unspecified);
Tokenizer tokenizer(&s, this);
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
tokenizer.tokenize(istr, filename);
const Token * const tok = Token::findsimplematch(tokenizer.tokens(),str);
return tok->valueType() ? tok->valueType()->str() : std::string();
}
@ -3153,6 +3153,10 @@ private:
// shift => result has same type as lhs
ASSERT_EQUALS("int", typeOf("int x; a = x << 1U;", "<<"));
ASSERT_EQUALS("int", typeOf("int x; a = x >> 1U;", ">>"));
ASSERT_EQUALS("", typeOf("a = 12 >> x;", ">>", "test.cpp")); // >> might be overloaded
ASSERT_EQUALS("signed int", typeOf("a = 12 >> x;", ">>", "test.c"));
ASSERT_EQUALS("", typeOf("a = 12 << x;", "<<", "test.cpp")); // << might be overloaded
ASSERT_EQUALS("signed int", typeOf("a = 12 << x;", "<<", "test.c"));
// array..
ASSERT_EQUALS("void * *", typeOf("void * x[10]; a = x + 0;", "+"));