From a32424b46cd3ef6fd8d644354e3cec434d5ab951 Mon Sep 17 00:00:00 2001 From: Edward Welbourne <edward.welbourne@qt.io> Date: Tue, 15 Nov 2016 17:15:56 +0100 Subject: [PATCH] AreArgumentsNarrowedBase: Correct logic for narrowing connect() casts The prior test deemed there to be narrowing if source and destination integral-or-enum types didn't have the same signedness; but all values of an unsigned source type can be represented in a larger signed destination type, so there is no narrowing in this case. Updated QObject test-case to match. Change-Id: I517a5997adcad70e185d7469a8d26788e463cb75 Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com> --- src/corelib/kernel/qobjectdefs_impl.h | 10 ++++- .../corelib/kernel/qobject/tst_qobject.cpp | 40 +++++++++---------- 2 files changed, 28 insertions(+), 22 deletions(-) diff --git a/src/corelib/kernel/qobjectdefs_impl.h b/src/corelib/kernel/qobjectdefs_impl.h index e94e713e1f..79c9c8303e 100644 --- a/src/corelib/kernel/qobjectdefs_impl.h +++ b/src/corelib/kernel/qobjectdefs_impl.h @@ -229,8 +229,14 @@ namespace QtPrivate { (std::is_floating_point<From>::value && std::is_integral<To>::value) || (std::is_floating_point<From>::value && std::is_floating_point<To>::value && sizeof(From) > sizeof(To)) || ((std::is_integral<From>::value || std::is_enum<From>::value) && std::is_floating_point<To>::value) || - (std::is_integral<From>::value && std::is_integral<To>::value && (sizeof(From) > sizeof(To) || std::is_signed<From>::value != std::is_signed<To>::value)) || - (std::is_enum<From>::value && std::is_integral<To>::value && (sizeof(From) > sizeof(To) || IsEnumUnderlyingTypeSigned<From>::value != std::is_signed<To>::value)) + (std::is_integral<From>::value && std::is_integral<To>::value + && (sizeof(From) > sizeof(To) + || (std::is_signed<From>::value ? !std::is_signed<To>::value + : (std::is_signed<To>::value && sizeof(From) == sizeof(To))))) || + (std::is_enum<From>::value && std::is_integral<To>::value + && (sizeof(From) > sizeof(To) + || (IsEnumUnderlyingTypeSigned<From>::value ? !std::is_signed<To>::value + : (std::is_signed<To>::value && sizeof(From) == sizeof(To))))) > { }; diff --git a/tests/auto/corelib/kernel/qobject/tst_qobject.cpp b/tests/auto/corelib/kernel/qobject/tst_qobject.cpp index 0f7f75fb2e..91810cdcd8 100644 --- a/tests/auto/corelib/kernel/qobject/tst_qobject.cpp +++ b/tests/auto/corelib/kernel/qobject/tst_qobject.cpp @@ -6969,10 +6969,10 @@ void tst_QObject::checkArgumentsForNarrowing() QVERIFY((QtPrivate::AreArgumentsNarrowedBase<signed char, unsigned long long>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<unsigned char, signed char>::value)); - QVERIFY((QtPrivate::AreArgumentsNarrowedBase<unsigned char, short>::value)); - QVERIFY((QtPrivate::AreArgumentsNarrowedBase<unsigned char, int>::value)); - QVERIFY((QtPrivate::AreArgumentsNarrowedBase<unsigned char, long>::value)); - QVERIFY((QtPrivate::AreArgumentsNarrowedBase<unsigned char, long long>::value)); + QVERIFY((!QtPrivate::AreArgumentsNarrowedBase<unsigned char, short>::value)); + QVERIFY((!QtPrivate::AreArgumentsNarrowedBase<unsigned char, int>::value)); + QVERIFY((!QtPrivate::AreArgumentsNarrowedBase<unsigned char, long>::value)); + QVERIFY((!QtPrivate::AreArgumentsNarrowedBase<unsigned char, long long>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<short, unsigned short>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<short, unsigned int>::value)); @@ -6980,23 +6980,23 @@ void tst_QObject::checkArgumentsForNarrowing() QVERIFY((QtPrivate::AreArgumentsNarrowedBase<short, unsigned long long>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<unsigned short, short>::value)); - QVERIFY((QtPrivate::AreArgumentsNarrowedBase<unsigned short, int>::value)); - QVERIFY((QtPrivate::AreArgumentsNarrowedBase<unsigned short, long>::value)); - QVERIFY((QtPrivate::AreArgumentsNarrowedBase<unsigned short, long long>::value)); + QVERIFY((!QtPrivate::AreArgumentsNarrowedBase<unsigned short, int>::value)); + QVERIFY((!QtPrivate::AreArgumentsNarrowedBase<unsigned short, long>::value)); + QVERIFY((!QtPrivate::AreArgumentsNarrowedBase<unsigned short, long long>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<int, unsigned int>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<int, unsigned long>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<int, unsigned long long>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<unsigned int, int>::value)); - QVERIFY((QtPrivate::AreArgumentsNarrowedBase<unsigned int, long>::value)); - QVERIFY((QtPrivate::AreArgumentsNarrowedBase<unsigned int, long long>::value)); + QCOMPARE((QtPrivate::AreArgumentsNarrowedBase<unsigned int, long>::value), sizeof(int) >= sizeof(long)); + QVERIFY((!QtPrivate::AreArgumentsNarrowedBase<unsigned int, long long>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<long, unsigned long>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<long, unsigned long long>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<unsigned long, long>::value)); - QVERIFY((QtPrivate::AreArgumentsNarrowedBase<unsigned long, long long>::value)); + QCOMPARE((QtPrivate::AreArgumentsNarrowedBase<unsigned long, long long>::value), sizeof(long) >= sizeof(long long)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<long long, unsigned long long>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<unsigned long long, long long>::value)); @@ -7206,28 +7206,28 @@ void tst_QObject::checkArgumentsForNarrowing() QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByLongLong, unsigned long long>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUChar, signed char>::value)); - QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUChar, short>::value)); - QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUChar, int>::value)); - QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUChar, long>::value)); - QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUChar, long long>::value)); + QVERIFY((!QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUChar, short>::value)); + QVERIFY((!QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUChar, int>::value)); + QVERIFY((!QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUChar, long>::value)); + QVERIFY((!QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUChar, long long>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUShort, signed char>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUShort, short>::value)); - QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUShort, int>::value)); - QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUShort, long>::value)); - QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUShort, long long>::value)); + QVERIFY((!QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUShort, int>::value)); + QVERIFY((!QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUShort, long>::value)); + QVERIFY((!QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUShort, long long>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUInt, signed char>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUInt, short>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUInt, int>::value)); - QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUInt, long>::value)); - QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUInt, long long>::value)); + QCOMPARE((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUInt, long>::value), sizeof(ScopedEnumBackedByUInt) >= sizeof(long)); + QVERIFY((!QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByUInt, long long>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByULong, signed char>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByULong, short>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByULong, int>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByULong, long>::value)); - QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByULong, long long>::value)); + QCOMPARE((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByULong, long long>::value), sizeof(ScopedEnumBackedByULong) >= sizeof(long long)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByULongLong, signed char>::value)); QVERIFY((QtPrivate::AreArgumentsNarrowedBase<ScopedEnumBackedByULongLong, short>::value));