qt5base-lts/tests/auto/other/compiler/tst_compiler.cpp
Bradley T. Hughes d964981252 Remove ARMFPA support and Q_DOUBLE_FORMAT detection
Remove the -armfpa option the config.tests/unix/doubleformat*
detection. The places where we used QT_ARMFPA and Q_DOUBLE_FORMAT
has been removed as well.

Rationale: ARM FPA with GCC does not work with EABI. Qt currently
does not support compiling without EABI, making ARM FPA an
impossibility. It is unknown whether other compilers provide ARM FPA
support with EABI. Support for ARM FPA can be re-added in the future
should the need arise, but since ARM VFP is available for ARMv5 and up,
we should encourage implementors to instead use soft-floats or VFP.

Change-Id: I3671aba575118ae3e3e6d769759301c8f2f496f5
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>
2012-03-01 16:26:55 +01:00

561 lines
15 KiB
C++

/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore/QtCore>
#include <QtTest/QtTest>
#include <algorithm>
#define BASECLASS_NOT_ABSTRACT
#include "baseclass.h"
#include "derivedclass.h"
QT_USE_NAMESPACE
class tst_Compiler : public QObject
{
Q_OBJECT
private slots:
void template_methods();
void template_constructors();
void template_subclasses();
void methodSpecialization();
void constructorSpecialization();
void staticTemplateMethods();
void staticTemplateMethodSpecialization();
void detectDataStream();
void detectEnums();
void overrideCFunction();
void stdSortQList();
void stdSortQVector();
void templateCallOrder();
void virtualFunctionNoLongerPureVirtual();
void charSignedness() const;
void privateStaticTemplateMember() const;
void staticConstUnionWithInitializerList() const;
};
#if defined(Q_CC_HPACC)
# define DONT_TEST_TEMPLATE_CONSTRUCTORS
# define DONT_TEST_CONSTRUCTOR_SPECIALIZATION
# define DONT_TEST_DATASTREAM_DETECTION
#endif
#if defined(Q_CC_SUN)
# define DONT_TEST_STL_SORTING
#endif
class TemplateMethodClass
{
public:
template <class T>
T foo() { return 42; }
};
void tst_Compiler::template_methods()
{
TemplateMethodClass t;
QCOMPARE(t.foo<int>(), 42);
QCOMPARE(t.foo<long>(), 42l);
QCOMPARE(t.foo<double>(), 42.0);
}
#ifndef DONT_TEST_TEMPLATE_CONSTRUCTORS
class TemplateConstructorClass
{
public:
template <class T>
TemplateConstructorClass(const T& t) { i = int(t); }
int i;
};
void tst_Compiler::template_constructors()
{
TemplateConstructorClass t1(42);
TemplateConstructorClass t2(42l);
TemplateConstructorClass t3(42.0);
QCOMPARE(t1.i, 42);
QCOMPARE(t2.i, 42);
QCOMPARE(t3.i, 42);
}
#else
void tst_Compiler::template_constructors()
{ QSKIP("Compiler doesn't do template constructors"); }
#endif
template <typename T>
struct OuterClass
{
template <typename U>
struct InnerClass
{
U convert(const T &t) { return static_cast<U>(t); }
};
};
void tst_Compiler::template_subclasses()
{
OuterClass<char>::InnerClass<int> c1;
QCOMPARE(c1.convert('a'), int('a'));
OuterClass<QRect>::InnerClass<QRectF> c2;
QCOMPARE(c2.convert(QRect(1, 2, 3, 4)), QRectF(QRect(1, 2, 3, 4)));
}
class TemplateMethodClass2
{
public:
template <class T>
T foo() { return 42; }
};
template<>
int TemplateMethodClass2::foo<int>()
{ return 43; }
void tst_Compiler::methodSpecialization()
{
TemplateMethodClass2 t;
QCOMPARE(t.foo<int>(), 43);
QCOMPARE(t.foo<long>(), 42l);
QCOMPARE(t.foo<double>(), 42.0);
}
#ifndef DONT_TEST_CONSTRUCTOR_SPECIALIZATION
class TemplateConstructorClass2
{
public:
template <class T>
TemplateConstructorClass2(const T &t) { i = int(t); }
int i;
};
template<>
TemplateConstructorClass2::TemplateConstructorClass2(const int &t) { i = t + 1; }
void tst_Compiler::constructorSpecialization()
{
TemplateConstructorClass2 t1(42);
TemplateConstructorClass2 t2(42l);
TemplateConstructorClass2 t3(42.0);
QCOMPARE(t1.i, 43);
QCOMPARE(t2.i, 42);
QCOMPARE(t3.i, 42);
}
#else
void tst_Compiler::constructorSpecialization()
{ QSKIP("Compiler doesn't do constructor specialization"); }
#endif
class StaticTemplateClass
{
public:
template <class T>
static T foo() { return 42; }
};
void tst_Compiler::staticTemplateMethods()
{
QCOMPARE(StaticTemplateClass::foo<int>(), 42);
QCOMPARE(StaticTemplateClass::foo<uint>(), 42u);
}
class StaticTemplateClass2
{
public:
template <class T>
static T foo() { return 42; }
};
template<>
double StaticTemplateClass2::foo<double>() { return 18.5; }
void tst_Compiler::staticTemplateMethodSpecialization()
{
QCOMPARE(StaticTemplateClass2::foo<int>(), 42);
QCOMPARE(StaticTemplateClass2::foo<uint>(), 42u);
QCOMPARE(StaticTemplateClass2::foo<double>(), 18.5);
}
#ifndef DONT_TEST_DATASTREAM_DETECTION
/******* DataStream tester *********/
namespace QtTestInternal
{
struct EmptyStruct {};
struct LowPreferenceStruct { LowPreferenceStruct(...); };
EmptyStruct operator<<(QDataStream &, const LowPreferenceStruct &);
EmptyStruct operator>>(QDataStream &, const LowPreferenceStruct &);
template<typename T>
struct DataStreamChecker
{
static EmptyStruct hasStreamHelper(const EmptyStruct &);
static QDataStream hasStreamHelper(const QDataStream &);
static QDataStream &dsDummy();
static T &dummy();
#ifdef BROKEN_COMPILER
static const bool HasDataStream =
sizeof(hasStreamHelper(dsDummy() << dummy())) == sizeof(QDataStream)
&& sizeof(hasStreamHelper(dsDummy() >> dummy())) == sizeof(QDataStream);
#else
enum {
HasOutDataStream = sizeof(hasStreamHelper(dsDummy() >> dummy())) == sizeof(QDataStream),
HasInDataStream = sizeof(hasStreamHelper(dsDummy() << dummy())) == sizeof(QDataStream),
HasDataStream = HasOutDataStream & HasInDataStream
};
#endif
};
template<bool>
struct DataStreamOpHelper
{
template <typename T>
struct Getter {
static QMetaType::SaveOperator saveOp() { return 0; }
};
};
template<>
struct DataStreamOpHelper<true>
{
template <typename T>
struct Getter {
static QMetaType::SaveOperator saveOp()
{
return ::qMetaTypeSaveHelper<T>;
}
};
};
template<typename T>
inline QMetaType::SaveOperator getSaveOperator(T * = 0)
{
typedef typename DataStreamOpHelper<DataStreamChecker<T>::HasDataStream>::template Getter<T> GetterHelper;
return GetterHelper::saveOp();
}
};
struct MyString: public QString {};
struct Qxxx {};
void tst_Compiler::detectDataStream()
{
QVERIFY(QtTestInternal::DataStreamChecker<int>::HasDataStream == true);
QVERIFY(QtTestInternal::DataStreamChecker<uint>::HasDataStream == true);
QVERIFY(QtTestInternal::DataStreamChecker<char *>::HasDataStream == true);
QVERIFY(QtTestInternal::DataStreamChecker<const int>::HasInDataStream == true);
QVERIFY(QtTestInternal::DataStreamChecker<const int>::HasOutDataStream == false);
QVERIFY(QtTestInternal::DataStreamChecker<const int>::HasDataStream == false);
QVERIFY(QtTestInternal::DataStreamChecker<double>::HasDataStream == true);
QVERIFY(QtTestInternal::DataStreamChecker<QString>::HasDataStream == true);
QVERIFY(QtTestInternal::DataStreamChecker<MyString>::HasDataStream == true);
QVERIFY(QtTestInternal::DataStreamChecker<Qxxx>::HasDataStream == false);
QVERIFY(QtTestInternal::getSaveOperator<int>() != 0);
QVERIFY(QtTestInternal::getSaveOperator<uint>() != 0);
QVERIFY(QtTestInternal::getSaveOperator<char *>() != 0);
QVERIFY(QtTestInternal::getSaveOperator<double>() != 0);
QVERIFY(QtTestInternal::getSaveOperator<QString>() != 0);
QVERIFY(QtTestInternal::getSaveOperator<MyString>() != 0);
QVERIFY(QtTestInternal::getSaveOperator<Qxxx>() == 0);
}
#else
void tst_Compiler::detectDataStream()
{ QSKIP("Compiler doesn't evaluate templates correctly"); }
#endif
enum Enum1 { Foo = 0, Bar = 1 };
enum Enum2 {};
enum Enum3 { Something = 1 };
template <typename T> char QTypeInfoEnumHelper(T);
template <typename T> void *QTypeInfoEnumHelper(...);
template <typename T>
struct QTestTypeInfo
{
enum { IsEnum = sizeof(QTypeInfoEnumHelper<T>(0)) == sizeof(void*) };
};
void tst_Compiler::detectEnums()
{
QVERIFY(QTestTypeInfo<Enum1>::IsEnum);
QVERIFY(QTestTypeInfo<Enum2>::IsEnum);
QVERIFY(QTestTypeInfo<Enum3>::IsEnum);
QVERIFY(!QTestTypeInfo<int>::IsEnum);
QVERIFY(!QTestTypeInfo<char>::IsEnum);
QVERIFY(!QTestTypeInfo<uint>::IsEnum);
QVERIFY(!QTestTypeInfo<short>::IsEnum);
QVERIFY(!QTestTypeInfo<ushort>::IsEnum);
QVERIFY(!QTestTypeInfo<void*>::IsEnum);
QVERIFY(!QTestTypeInfo<QString>::IsEnum);
QVERIFY(QTestTypeInfo<Qt::Key>::IsEnum);
QVERIFY(QTestTypeInfo<Qt::ToolBarArea>::IsEnum);
QVERIFY(!QTestTypeInfo<Qt::ToolBarAreas>::IsEnum);
QVERIFY(QTestTypeInfo<Qt::MatchFlag>::IsEnum);
QVERIFY(!QTestTypeInfo<Qt::MatchFlags>::IsEnum);
}
static int indicator = 0;
// this is a silly C function
extern "C" {
void someCFunc(void *) { indicator = 42; }
}
// this is the catch-template that will be called if the C function doesn't exist
template <typename T>
void someCFunc(T *) { indicator = 10; }
void tst_Compiler::overrideCFunction()
{
someCFunc((void*)0);
QCOMPARE(indicator, 42);
}
#ifndef DONT_TEST_STL_SORTING
void tst_Compiler::stdSortQList()
{
QList<int> list;
list << 4 << 2;
std::sort(list.begin(), list.end());
QCOMPARE(list.value(0), 2);
QCOMPARE(list.value(1), 4);
QList<QString> slist;
slist << "b" << "a";
std::sort(slist.begin(), slist.end());
QCOMPARE(slist.value(0), QString("a"));
QCOMPARE(slist.value(1), QString("b"));
}
void tst_Compiler::stdSortQVector()
{
QVector<int> vector;
vector << 4 << 2;
std::sort(vector.begin(), vector.end());
QCOMPARE(vector.value(0), 2);
QCOMPARE(vector.value(1), 4);
QVector<QString> strvec;
strvec << "b" << "a";
std::sort(strvec.begin(), strvec.end());
QCOMPARE(strvec.value(0), QString("a"));
QCOMPARE(strvec.value(1), QString("b"));
}
#else
void tst_Compiler::stdSortQList()
{ QSKIP("Compiler's STL broken"); }
void tst_Compiler::stdSortQVector()
{ QSKIP("Compiler's STL broken"); }
#endif
// the C func will set it to 1, the template to 2
static int whatWasCalled = 0;
void callOrderFunc(void *)
{
whatWasCalled = 1;
}
template <typename T>
void callOrderFunc(T *)
{
whatWasCalled = 2;
}
template <typename T>
void callOrderNoCFunc(T *)
{
whatWasCalled = 3;
}
/*
This test will check what will get precendence - the C function
or the template.
It also makes sure this template "override" will compile on all systems
and not result in ambiguities.
*/
void tst_Compiler::templateCallOrder()
{
QCOMPARE(whatWasCalled, 0);
// call it with a void *
void *f = 0;
callOrderFunc(f);
QCOMPARE(whatWasCalled, 1);
whatWasCalled = 0;
char *c = 0;
/* call it with a char * - AMBIGOUS, fails on several compilers
callOrderFunc(c);
QCOMPARE(whatWasCalled, 1);
whatWasCalled = 0;
*/
// now try the case when there is no C function
callOrderNoCFunc(f);
QCOMPARE(whatWasCalled, 3);
whatWasCalled = 0;
callOrderNoCFunc(c);
QCOMPARE(whatWasCalled, 3);
whatWasCalled = 0;
}
// test to see if removing =0 from a pure virtual function is BC
void tst_Compiler::virtualFunctionNoLongerPureVirtual()
{
#ifdef BASECLASS_NOT_ABSTRACT
// has a single virtual function, not pure virtual, can call it
BaseClass baseClass;
QTest::ignoreMessage(QtDebugMsg, "BaseClass::wasAPureVirtualFunction()");
baseClass.wasAPureVirtualFunction();
#endif
// DerivedClass inherits from BaseClass, and function is declared
// pure virtual, make sure we can still call it
DerivedClass derivedClass;
QTest::ignoreMessage(QtDebugMsg, "DerivedClass::wasAPureVirtualFunction()");
derivedClass.wasAPureVirtualFunction();
}
template<typename T> const char *resolveCharSignedness();
template<>
const char *resolveCharSignedness<char>()
{
return "char";
}
template<>
const char *resolveCharSignedness<unsigned char>()
{
return "unsigned char";
}
template<>
const char *resolveCharSignedness<signed char>()
{
return "signed char";
}
void tst_Compiler::charSignedness() const
{
QCOMPARE("char", resolveCharSignedness<char>());
QCOMPARE("unsigned char", resolveCharSignedness<unsigned char>());
QCOMPARE("signed char", resolveCharSignedness<signed char>());
}
class PrivateStaticTemplateMember
{
public:
long regularMember()
{
return helper<long, int>(3);
}
private:
template<typename A, typename B>
static A helper(const B b)
{
return A(b);
}
};
void tst_Compiler::privateStaticTemplateMember() const
{
PrivateStaticTemplateMember v;
QCOMPARE(long(3), v.regularMember());
}
#if !defined(Q_CC_MIPS)
// make sure we can use a static initializer with a union and then use
// the second member of the union
static const union { unsigned char c[8]; double d; } qt_be_inf_bytes = { { 0x7f, 0xf0, 0, 0, 0, 0, 0, 0 } };
static const union { unsigned char c[8]; double d; } qt_le_inf_bytes = { { 0, 0, 0, 0, 0, 0, 0xf0, 0x7f } };
static inline double qt_inf()
{
return (QSysInfo::ByteOrder == QSysInfo::BigEndian
? qt_be_inf_bytes.d
: qt_le_inf_bytes.d);
}
#else
static const unsigned char qt_be_inf_bytes[] = { 0x7f, 0xf0, 0, 0, 0, 0, 0, 0 };
static const unsigned char qt_le_inf_bytes[] = { 0, 0, 0, 0, 0, 0, 0xf0, 0x7f };
static inline double qt_inf()
{
const uchar *bytes;
bytes = (QSysInfo::ByteOrder == QSysInfo::BigEndian
? qt_be_inf_bytes
: qt_le_inf_bytes);
union { uchar c[8]; double d; } returnValue;
memcpy(returnValue.c, bytes, sizeof(returnValue.c));
return returnValue.d;
}
#endif
void tst_Compiler::staticConstUnionWithInitializerList() const
{
double d = qt_inf();
QVERIFY(qIsInf(d));
}
QTEST_MAIN(tst_Compiler)
#include "tst_compiler.moc"