diff options
Diffstat (limited to 'Tools/TestWebKitAPI/Tests/WTF/CheckedArithmeticOperations.cpp')
| -rw-r--r-- | Tools/TestWebKitAPI/Tests/WTF/CheckedArithmeticOperations.cpp | 554 |
1 files changed, 108 insertions, 446 deletions
diff --git a/Tools/TestWebKitAPI/Tests/WTF/CheckedArithmeticOperations.cpp b/Tools/TestWebKitAPI/Tests/WTF/CheckedArithmeticOperations.cpp index d6b548316..77b8ff458 100644 --- a/Tools/TestWebKitAPI/Tests/WTF/CheckedArithmeticOperations.cpp +++ b/Tools/TestWebKitAPI/Tests/WTF/CheckedArithmeticOperations.cpp @@ -1,5 +1,5 @@ /* - * Copyright (C) 2011, 2015 Apple Inc. All rights reserved. + * Copyright (C) 2011 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions @@ -28,397 +28,117 @@ namespace TestWebKitAPI { -class OverflowCrashLogger { -protected: - void overflowed() - { - m_overflowCount++; - } - - void clearOverflow() - { - m_overflowCount = 0; - } - - static void crash() - { - s_didCrash = true; - } - -public: - void reset() - { - m_overflowCount = 0; - s_didCrash = false; - } - - bool hasOverflowed() const { return m_overflowCount > 0; } - int overflowCount() const { return m_overflowCount; } - - bool didCrash() const { return s_didCrash; } - -private: - int m_overflowCount { 0 }; - static bool s_didCrash; -}; - -bool OverflowCrashLogger::s_didCrash = false; - -template <typename type> -static void resetOverflow(Checked<type, OverflowCrashLogger>& value) -{ - value.reset(); - value = 100; - value *= std::numeric_limits<type>::max(); -} - -#define CheckedArithmeticTest(type, Coercer, MixedSignednessTester) \ +#define CheckedArithmeticTest(type, coerceLiteral, MixedSignednessTest) \ TEST(WTF, Checked_##type) \ { \ - typedef Coercer<type> CoercerType; \ - typedef MixedSignednessTester<type, CoercerType> MixedSignednessTesterType; \ - CheckedArithmeticTester<type, CoercerType, MixedSignednessTesterType>::run(); \ + Checked<type, RecordOverflow> value; \ + EXPECT_EQ(coerceLiteral(0), value.unsafeGet()); \ + EXPECT_EQ(std::numeric_limits<type>::max(), (value + std::numeric_limits<type>::max()).unsafeGet()); \ + EXPECT_EQ(std::numeric_limits<type>::max(), (std::numeric_limits<type>::max() + value).unsafeGet()); \ + EXPECT_EQ(std::numeric_limits<type>::min(), (value + std::numeric_limits<type>::min()).unsafeGet()); \ + EXPECT_EQ(std::numeric_limits<type>::min(), (std::numeric_limits<type>::min() + value).unsafeGet()); \ + EXPECT_EQ(coerceLiteral(0), (value * coerceLiteral(0)).unsafeGet()); \ + EXPECT_EQ(coerceLiteral(0), (coerceLiteral(0) * value).unsafeGet()); \ + EXPECT_EQ(coerceLiteral(0), (value * value).unsafeGet()); \ + EXPECT_EQ(coerceLiteral(0), (value - coerceLiteral(0)).unsafeGet()); \ + EXPECT_EQ(coerceLiteral(0), (coerceLiteral(0) - value).unsafeGet()); \ + EXPECT_EQ(coerceLiteral(0), (value - value).unsafeGet()); \ + EXPECT_EQ(coerceLiteral(0), (value++).unsafeGet()); \ + EXPECT_EQ(coerceLiteral(1), (value--).unsafeGet()); \ + EXPECT_EQ(coerceLiteral(1), (++value).unsafeGet()); \ + EXPECT_EQ(coerceLiteral(0), (--value).unsafeGet()); \ + EXPECT_EQ(coerceLiteral(10), (value += coerceLiteral(10)).unsafeGet()); \ + EXPECT_EQ(coerceLiteral(10), value.unsafeGet()); \ + EXPECT_EQ(coerceLiteral(100), (value *= coerceLiteral(10)).unsafeGet()); \ + EXPECT_EQ(coerceLiteral(100), value.unsafeGet()); \ + EXPECT_EQ(coerceLiteral(0), (value -= coerceLiteral(100)).unsafeGet()); \ + EXPECT_EQ(coerceLiteral(0), value.unsafeGet()); \ + value = 10; \ + EXPECT_EQ(coerceLiteral(10), value.unsafeGet()); \ + EXPECT_EQ(coerceLiteral(0), (value - coerceLiteral(10)).unsafeGet()); \ + EXPECT_EQ(coerceLiteral(10), value.unsafeGet()); \ + value = std::numeric_limits<type>::min(); \ + EXPECT_EQ(true, (Checked<type, RecordOverflow>(value - coerceLiteral(1))).hasOverflowed()); \ + EXPECT_EQ(true, !((value--).hasOverflowed())); \ + EXPECT_EQ(true, value.hasOverflowed()); \ + value = std::numeric_limits<type>::max(); \ + EXPECT_EQ(true, !value.hasOverflowed()); \ + EXPECT_EQ(true, (Checked<type, RecordOverflow>(value + coerceLiteral(1))).hasOverflowed()); \ + EXPECT_EQ(true, !(value++).hasOverflowed()); \ + EXPECT_EQ(true, value.hasOverflowed()); \ + value = std::numeric_limits<type>::max(); \ + EXPECT_EQ(true, (value += coerceLiteral(1)).hasOverflowed()); \ + EXPECT_EQ(true, value.hasOverflowed()); \ + value = 10; \ + type _value = 0; \ + EXPECT_EQ(true, CheckedState::DidNotOverflow == (value * Checked<type, RecordOverflow>(0)).safeGet(_value)); \ + _value = 0; \ + EXPECT_EQ(true, CheckedState::DidNotOverflow == (Checked<type, RecordOverflow>(0) * value).safeGet(_value)); \ + _value = 0; \ + EXPECT_EQ(true, CheckedState::DidOverflow == (value * Checked<type, RecordOverflow>(std::numeric_limits<type>::max())).safeGet(_value)); \ + _value = 0; \ + EXPECT_EQ(true, CheckedState::DidOverflow == (Checked<type, RecordOverflow>(std::numeric_limits<type>::max()) * value).safeGet(_value)); \ + value = 0; \ + _value = 0; \ + EXPECT_EQ(true, CheckedState::DidNotOverflow == (value * Checked<type, RecordOverflow>(std::numeric_limits<type>::max())).safeGet(_value)); \ + _value = 0; \ + EXPECT_EQ(true, CheckedState::DidNotOverflow == (Checked<type, RecordOverflow>(std::numeric_limits<type>::max()) * value).safeGet(_value)); \ + value = 1; \ + _value = 0; \ + EXPECT_EQ(true, CheckedState::DidNotOverflow == (value * Checked<type, RecordOverflow>(std::numeric_limits<type>::max())).safeGet(_value)); \ + _value = 0; \ + EXPECT_EQ(true, CheckedState::DidNotOverflow == (Checked<type, RecordOverflow>(std::numeric_limits<type>::max()) * value).safeGet(_value)); \ + _value = 0; \ + value = 0; \ + EXPECT_EQ(true, CheckedState::DidNotOverflow == (value * Checked<type, RecordOverflow>(std::numeric_limits<type>::max())).safeGet(_value)); \ + _value = 0; \ + EXPECT_EQ(true, CheckedState::DidNotOverflow == (Checked<type, RecordOverflow>(std::numeric_limits<type>::max()) * (type)0).safeGet(_value)); \ + _value = 0; \ + value = 1; \ + EXPECT_EQ(true, CheckedState::DidNotOverflow == (value * Checked<type, RecordOverflow>(std::numeric_limits<type>::max())).safeGet(_value)); \ + _value = 0; \ + EXPECT_EQ(true, CheckedState::DidNotOverflow == (Checked<type, RecordOverflow>(std::numeric_limits<type>::max()) * (type)1).safeGet(_value)); \ + _value = 0; \ + value = 2; \ + EXPECT_EQ(true, CheckedState::DidOverflow == (value * Checked<type, RecordOverflow>(std::numeric_limits<type>::max())).safeGet(_value)); \ + _value = 0; \ + EXPECT_EQ(true, CheckedState::DidOverflow == (Checked<type, RecordOverflow>(std::numeric_limits<type>::max()) * (type)2).safeGet(_value)); \ + value = 10; \ + EXPECT_EQ(true, (value * Checked<type, RecordOverflow>(std::numeric_limits<type>::max())).hasOverflowed()); \ + MixedSignednessTest(EXPECT_EQ(coerceLiteral(0), (value + -10).unsafeGet())); \ + MixedSignednessTest(EXPECT_EQ(0U, (value - 10U).unsafeGet())); \ + MixedSignednessTest(EXPECT_EQ(coerceLiteral(0), (-10 + value).unsafeGet())); \ + MixedSignednessTest(EXPECT_EQ(0U, (10U - value).unsafeGet())); \ + value = std::numeric_limits<type>::min(); \ + MixedSignednessTest(EXPECT_EQ(true, (Checked<type, RecordOverflow>(value - 1)).hasOverflowed())); \ + MixedSignednessTest(EXPECT_EQ(true, !(value--).hasOverflowed())); \ + MixedSignednessTest(EXPECT_EQ(true, value.hasOverflowed())); \ + value = std::numeric_limits<type>::max(); \ + MixedSignednessTest(EXPECT_EQ(true, !value.hasOverflowed())); \ + MixedSignednessTest(EXPECT_EQ(true, (Checked<type, RecordOverflow>(value + 1)).hasOverflowed())); \ + MixedSignednessTest(EXPECT_EQ(true, !(value++).hasOverflowed())); \ + MixedSignednessTest(EXPECT_EQ(true, value.hasOverflowed())); \ + value = std::numeric_limits<type>::max(); \ + MixedSignednessTest(EXPECT_EQ(true, (value += 1).hasOverflowed())); \ + MixedSignednessTest(EXPECT_EQ(true, value.hasOverflowed())); \ + value = std::numeric_limits<type>::min(); \ + MixedSignednessTest(EXPECT_EQ(true, (value - 1U).hasOverflowed())); \ + MixedSignednessTest(EXPECT_EQ(true, !(value--).hasOverflowed())); \ + MixedSignednessTest(EXPECT_EQ(true, value.hasOverflowed())); \ + value = std::numeric_limits<type>::max(); \ + MixedSignednessTest(EXPECT_EQ(true, !value.hasOverflowed())); \ + MixedSignednessTest(EXPECT_EQ(true, (Checked<type, RecordOverflow>(value + 1U)).hasOverflowed())); \ + MixedSignednessTest(EXPECT_EQ(true, !(value++).hasOverflowed())); \ + MixedSignednessTest(EXPECT_EQ(true, value.hasOverflowed())); \ + value = std::numeric_limits<type>::max(); \ + MixedSignednessTest(EXPECT_EQ(true, (value += 1U).hasOverflowed())); \ + MixedSignednessTest(EXPECT_EQ(true, value.hasOverflowed())); \ } - -#define coerceLiteral(x) Coercer::coerce(x) - -template <typename type, typename Coercer, typename MixedSignednessTester> -class CheckedArithmeticTester { -public: - static void run() - { - Checked<type, RecordOverflow> value; - EXPECT_EQ(coerceLiteral(0), value.unsafeGet()); - EXPECT_EQ(std::numeric_limits<type>::max(), (value + std::numeric_limits<type>::max()).unsafeGet()); - EXPECT_EQ(std::numeric_limits<type>::max(), (std::numeric_limits<type>::max() + value).unsafeGet()); - EXPECT_EQ(std::numeric_limits<type>::min(), (value + std::numeric_limits<type>::min()).unsafeGet()); - EXPECT_EQ(std::numeric_limits<type>::min(), (std::numeric_limits<type>::min() + value).unsafeGet()); - - EXPECT_EQ(coerceLiteral(0), (value * coerceLiteral(0)).unsafeGet()); - EXPECT_EQ(coerceLiteral(0), (coerceLiteral(0) * value).unsafeGet()); - EXPECT_EQ(coerceLiteral(0), (value * value).unsafeGet()); - EXPECT_EQ(coerceLiteral(0), (value - coerceLiteral(0)).unsafeGet()); - EXPECT_EQ(coerceLiteral(0), (coerceLiteral(0) - value).unsafeGet()); - EXPECT_EQ(coerceLiteral(0), (value - value).unsafeGet()); - EXPECT_EQ(coerceLiteral(0), (value++).unsafeGet()); - EXPECT_EQ(coerceLiteral(1), (value--).unsafeGet()); - EXPECT_EQ(coerceLiteral(1), (++value).unsafeGet()); - EXPECT_EQ(coerceLiteral(0), (--value).unsafeGet()); - EXPECT_EQ(coerceLiteral(10), (value += coerceLiteral(10)).unsafeGet()); - EXPECT_EQ(coerceLiteral(10), value.unsafeGet()); - EXPECT_EQ(coerceLiteral(100), (value *= coerceLiteral(10)).unsafeGet()); - EXPECT_EQ(coerceLiteral(100), value.unsafeGet()); - EXPECT_EQ(coerceLiteral(0), (value -= coerceLiteral(100)).unsafeGet()); - EXPECT_EQ(coerceLiteral(0), value.unsafeGet()); - value = 10; - EXPECT_EQ(coerceLiteral(10), value.unsafeGet()); - EXPECT_EQ(coerceLiteral(0), (value - coerceLiteral(10)).unsafeGet()); - EXPECT_EQ(coerceLiteral(10), value.unsafeGet()); - - value = std::numeric_limits<type>::min(); - EXPECT_EQ(true, (Checked<type, RecordOverflow>(value - coerceLiteral(1))).hasOverflowed()); - EXPECT_EQ(true, !((value--).hasOverflowed())); - EXPECT_EQ(true, value.hasOverflowed()); - value = std::numeric_limits<type>::max(); - EXPECT_EQ(true, !value.hasOverflowed()); - EXPECT_EQ(true, (Checked<type, RecordOverflow>(value + coerceLiteral(1))).hasOverflowed()); - EXPECT_EQ(true, !(value++).hasOverflowed()); - EXPECT_EQ(true, value.hasOverflowed()); - value = std::numeric_limits<type>::max(); - EXPECT_EQ(true, (value += coerceLiteral(1)).hasOverflowed()); - EXPECT_EQ(true, value.hasOverflowed()); - - value = 10; - type _value = 0; - EXPECT_EQ(true, CheckedState::DidNotOverflow == (value * Checked<type, RecordOverflow>(0)).safeGet(_value)); - _value = 0; - EXPECT_EQ(true, CheckedState::DidNotOverflow == (Checked<type, RecordOverflow>(0) * value).safeGet(_value)); - _value = 0; - EXPECT_EQ(true, CheckedState::DidOverflow == (value * Checked<type, RecordOverflow>(std::numeric_limits<type>::max())).safeGet(_value)); - _value = 0; - EXPECT_EQ(true, CheckedState::DidOverflow == (Checked<type, RecordOverflow>(std::numeric_limits<type>::max()) * value).safeGet(_value)); - value = 0; - _value = 0; - EXPECT_EQ(true, CheckedState::DidNotOverflow == (value * Checked<type, RecordOverflow>(std::numeric_limits<type>::max())).safeGet(_value)); - _value = 0; - EXPECT_EQ(true, CheckedState::DidNotOverflow == (Checked<type, RecordOverflow>(std::numeric_limits<type>::max()) * value).safeGet(_value)); - value = 1; - _value = 0; - EXPECT_EQ(true, CheckedState::DidNotOverflow == (value * Checked<type, RecordOverflow>(std::numeric_limits<type>::max())).safeGet(_value)); - _value = 0; - EXPECT_EQ(true, CheckedState::DidNotOverflow == (Checked<type, RecordOverflow>(std::numeric_limits<type>::max()) * value).safeGet(_value)); - _value = 0; - value = 0; - EXPECT_EQ(true, CheckedState::DidNotOverflow == (value * Checked<type, RecordOverflow>(std::numeric_limits<type>::max())).safeGet(_value)); - _value = 0; - EXPECT_EQ(true, CheckedState::DidNotOverflow == (Checked<type, RecordOverflow>(std::numeric_limits<type>::max()) * (type)0).safeGet(_value)); - _value = 0; - value = 1; - EXPECT_EQ(true, CheckedState::DidNotOverflow == (value * Checked<type, RecordOverflow>(std::numeric_limits<type>::max())).safeGet(_value)); - _value = 0; - EXPECT_EQ(true, CheckedState::DidNotOverflow == (Checked<type, RecordOverflow>(std::numeric_limits<type>::max()) * (type)1).safeGet(_value)); - _value = 0; - value = 2; - EXPECT_EQ(true, CheckedState::DidOverflow == (value * Checked<type, RecordOverflow>(std::numeric_limits<type>::max())).safeGet(_value)); - _value = 0; - EXPECT_EQ(true, CheckedState::DidOverflow == (Checked<type, RecordOverflow>(std::numeric_limits<type>::max()) * (type)2).safeGet(_value)); - value = 10; - EXPECT_EQ(true, (value * Checked<type, RecordOverflow>(std::numeric_limits<type>::max())).hasOverflowed()); - - - Checked<type, OverflowCrashLogger> nvalue; // to hold a not overflowed value. - Checked<type, OverflowCrashLogger> ovalue; // to hold an overflowed value. - bool unused; - - _value = 75; - type _largeValue = 100; - type _smallValue = 50; - - value = _smallValue; - nvalue = _value; - ovalue = _value; - - // Make sure the OverflowCrashLogger is working as expected. - EXPECT_EQ(false, (ovalue.hasOverflowed())); - EXPECT_EQ(true, (resetOverflow(ovalue), ovalue.hasOverflowed())); - EXPECT_EQ(false, (resetOverflow(ovalue), ovalue.didCrash())); - EXPECT_EQ(true, (unused = (ovalue == ovalue), ovalue.didCrash())); - EXPECT_EQ(false, (resetOverflow(ovalue), ovalue.didCrash())); - - EXPECT_EQ(false, nvalue.hasOverflowed()); - EXPECT_EQ(false, nvalue.didCrash()); - - // Test operator== that should not overflow nor crash. - EXPECT_EQ(true, (nvalue == nvalue)); - EXPECT_EQ(true, (nvalue == Checked<type, OverflowCrashLogger>(_value))); - EXPECT_EQ(false, (nvalue == value)); - EXPECT_EQ(true, (nvalue == _value)); - EXPECT_EQ(false, (nvalue == Checked<type, OverflowCrashLogger>(std::numeric_limits<type>::max()))); - EXPECT_EQ(false, (nvalue == std::numeric_limits<type>::max())); - - EXPECT_EQ(false, nvalue.hasOverflowed()); - EXPECT_EQ(false, nvalue.didCrash()); - - // Test operator!= that should not overflow nor crash. - EXPECT_EQ(false, (nvalue != nvalue)); - EXPECT_EQ(false, (nvalue != Checked<type, OverflowCrashLogger>(_value))); - EXPECT_EQ(true, (nvalue != value)); - EXPECT_EQ(false, (nvalue != _value)); - EXPECT_EQ(true, (nvalue != Checked<type, OverflowCrashLogger>(std::numeric_limits<type>::max()))); - EXPECT_EQ(true, (nvalue != std::numeric_limits<type>::max())); - - EXPECT_EQ(false, nvalue.hasOverflowed()); - EXPECT_EQ(false, nvalue.didCrash()); - - // Test operator< that should not overflow nor crash. - EXPECT_EQ(false, (nvalue < nvalue)); - EXPECT_EQ(false, (nvalue < value)); - EXPECT_EQ(true, (nvalue < Checked<type, OverflowCrashLogger>(_largeValue))); - EXPECT_EQ(false, (nvalue < Checked<type, OverflowCrashLogger>(_value))); - EXPECT_EQ(false, (nvalue < Checked<type, OverflowCrashLogger>(_smallValue))); - EXPECT_EQ(true, (nvalue < _largeValue)); - EXPECT_EQ(false, (nvalue < _value)); - EXPECT_EQ(false, (nvalue < _smallValue)); - EXPECT_EQ(true, (nvalue < Checked<type, OverflowCrashLogger>(std::numeric_limits<type>::max()))); - EXPECT_EQ(true, (nvalue < std::numeric_limits<type>::max())); - - EXPECT_EQ(false, nvalue.hasOverflowed()); - EXPECT_EQ(false, nvalue.didCrash()); - - // Test operator<= that should not overflow nor crash. - EXPECT_EQ(true, (nvalue <= nvalue)); - EXPECT_EQ(false, (nvalue <= value)); - EXPECT_EQ(true, (nvalue <= Checked<type, OverflowCrashLogger>(_largeValue))); - EXPECT_EQ(true, (nvalue <= Checked<type, OverflowCrashLogger>(_value))); - EXPECT_EQ(false, (nvalue <= Checked<type, OverflowCrashLogger>(_smallValue))); - EXPECT_EQ(true, (nvalue <= _largeValue)); - EXPECT_EQ(true, (nvalue <= _value)); - EXPECT_EQ(false, (nvalue <= _smallValue)); - EXPECT_EQ(true, (nvalue <= Checked<type, OverflowCrashLogger>(std::numeric_limits<type>::max()))); - EXPECT_EQ(true, (nvalue <= std::numeric_limits<type>::max())); - - EXPECT_EQ(false, nvalue.hasOverflowed()); - EXPECT_EQ(false, nvalue.didCrash()); - - // Test operator> that should not overflow nor crash. - EXPECT_EQ(false, (nvalue > nvalue)); - EXPECT_EQ(true, (nvalue > value)); - EXPECT_EQ(false, (nvalue > Checked<type, OverflowCrashLogger>(_largeValue))); - EXPECT_EQ(false, (nvalue > Checked<type, OverflowCrashLogger>(_value))); - EXPECT_EQ(true, (nvalue > Checked<type, OverflowCrashLogger>(_smallValue))); - EXPECT_EQ(false, (nvalue > _largeValue)); - EXPECT_EQ(false, (nvalue > _value)); - EXPECT_EQ(true, (nvalue > _smallValue)); - EXPECT_EQ(false, (nvalue > Checked<type, OverflowCrashLogger>(std::numeric_limits<type>::max()))); - EXPECT_EQ(false, (nvalue > std::numeric_limits<type>::max())); - - EXPECT_EQ(false, nvalue.hasOverflowed()); - EXPECT_EQ(false, nvalue.didCrash()); - - // Test operator>= that should not overflow nor crash. - EXPECT_EQ(true, (nvalue >= nvalue)); - EXPECT_EQ(true, (nvalue >= value)); - EXPECT_EQ(false, (nvalue >= Checked<type, OverflowCrashLogger>(_largeValue))); - EXPECT_EQ(true, (nvalue >= Checked<type, OverflowCrashLogger>(_value))); - EXPECT_EQ(true, (nvalue >= Checked<type, OverflowCrashLogger>(_smallValue))); - EXPECT_EQ(false, (nvalue >= _largeValue)); - EXPECT_EQ(true, (nvalue >= _value)); - EXPECT_EQ(true, (nvalue >= _smallValue)); - EXPECT_EQ(false, (nvalue >= Checked<type, OverflowCrashLogger>(std::numeric_limits<type>::max()))); - EXPECT_EQ(false, (nvalue >= std::numeric_limits<type>::max())); - - EXPECT_EQ(false, nvalue.hasOverflowed()); - EXPECT_EQ(false, nvalue.didCrash()); - - // Test operator== with an overflowed value. - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue == ovalue), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue == Checked<type, OverflowCrashLogger>(_value)), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue == value), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue == _value), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue == _value * std::numeric_limits<type>::max()), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue == Checked<type, OverflowCrashLogger>(std::numeric_limits<type>::max())), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue == std::numeric_limits<type>::max()), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue == nvalue), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (nvalue == ovalue), ovalue.didCrash())); - - EXPECT_EQ(false, nvalue.hasOverflowed()); - - // Test operator!= with an overflowed value. - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue != ovalue), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue != Checked<type, OverflowCrashLogger>(_value)), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue != value), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue != _value), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue != _value * std::numeric_limits<type>::max()), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue != Checked<type, OverflowCrashLogger>(std::numeric_limits<type>::max())), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue != std::numeric_limits<type>::max()), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue != nvalue), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (nvalue != ovalue), ovalue.didCrash())); - - EXPECT_EQ(false, nvalue.hasOverflowed()); - - // Test operator< with an overflowed value. - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue < ovalue), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue < value), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue < Checked<type, OverflowCrashLogger>(_largeValue)), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue < Checked<type, OverflowCrashLogger>(_value)), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue < Checked<type, OverflowCrashLogger>(_smallValue)), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue < _largeValue), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue < _value), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue < _smallValue), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue < Checked<type, OverflowCrashLogger>(std::numeric_limits<type>::max())), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue < std::numeric_limits<type>::max()), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue < nvalue), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (nvalue < ovalue), ovalue.didCrash())); - - EXPECT_EQ(false, nvalue.hasOverflowed()); - - // Test operator<= with an overflowed value. - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue <= ovalue), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue <= value), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue <= Checked<type, OverflowCrashLogger>(_largeValue)), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue <= Checked<type, OverflowCrashLogger>(_value)), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue <= Checked<type, OverflowCrashLogger>(_smallValue)), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue <= _largeValue), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue <= _value), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue <= _smallValue), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue <= Checked<type, OverflowCrashLogger>(std::numeric_limits<type>::max())), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue <= std::numeric_limits<type>::max()), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue <= nvalue), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (nvalue <= ovalue), ovalue.didCrash())); - - EXPECT_EQ(false, nvalue.hasOverflowed()); - - // Test operator> with an overflowed value. - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue > ovalue), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue > value), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue > Checked<type, OverflowCrashLogger>(_largeValue)), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue > Checked<type, OverflowCrashLogger>(_value)), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue > Checked<type, OverflowCrashLogger>(_smallValue)), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue > _largeValue), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue > _value), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue > _smallValue), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue > Checked<type, OverflowCrashLogger>(std::numeric_limits<type>::max())), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue > std::numeric_limits<type>::max()), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue > nvalue), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (nvalue > ovalue), ovalue.didCrash())); - - EXPECT_EQ(false, nvalue.hasOverflowed()); - - // Test operator>= with an overflowed value. - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue >= ovalue), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue >= value), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue >= Checked<type, OverflowCrashLogger>(_largeValue)), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue >= Checked<type, OverflowCrashLogger>(_value)), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue >= Checked<type, OverflowCrashLogger>(_smallValue)), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue >= _largeValue), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue >= _value), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue >= _smallValue), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue >= Checked<type, OverflowCrashLogger>(std::numeric_limits<type>::max())), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue >= std::numeric_limits<type>::max()), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (ovalue >= nvalue), ovalue.didCrash())); - EXPECT_EQ(true, (resetOverflow(ovalue), unused = (nvalue >= ovalue), ovalue.didCrash())); - - EXPECT_EQ(false, nvalue.hasOverflowed()); - - MixedSignednessTester::run(); - } -}; - -template <typename type, typename Coercer> -class AllowMixedSignednessTest { -public: - static void run() - { - Checked<type, RecordOverflow> value; - value = 10; - - EXPECT_EQ(coerceLiteral(0), (value + -10).unsafeGet()); - EXPECT_EQ(0U, (value - 10U).unsafeGet()); - EXPECT_EQ(coerceLiteral(0), (-10 + value).unsafeGet()); - EXPECT_EQ(0U, (10U - value).unsafeGet()); - value = std::numeric_limits<type>::min(); - EXPECT_EQ(true, (Checked<type, RecordOverflow>(value - 1)).hasOverflowed()); - EXPECT_EQ(true, !(value--).hasOverflowed()); - EXPECT_EQ(true, value.hasOverflowed()); - value = std::numeric_limits<type>::max(); - EXPECT_EQ(true, !value.hasOverflowed()); - EXPECT_EQ(true, (Checked<type, RecordOverflow>(value + 1)).hasOverflowed()); - EXPECT_EQ(true, !(value++).hasOverflowed()); - EXPECT_EQ(true, value.hasOverflowed()); - value = std::numeric_limits<type>::max(); - EXPECT_EQ(true, (value += 1).hasOverflowed()); - EXPECT_EQ(true, value.hasOverflowed()); - value = std::numeric_limits<type>::min(); - EXPECT_EQ(true, (value - 1U).hasOverflowed()); - EXPECT_EQ(true, !(value--).hasOverflowed()); - EXPECT_EQ(true, value.hasOverflowed()); - value = std::numeric_limits<type>::max(); - EXPECT_EQ(true, !value.hasOverflowed()); - EXPECT_EQ(true, (Checked<type, RecordOverflow>(value + 1U)).hasOverflowed()); - EXPECT_EQ(true, !(value++).hasOverflowed()); - EXPECT_EQ(true, value.hasOverflowed()); - value = std::numeric_limits<type>::max(); - EXPECT_EQ(true, (value += 1U).hasOverflowed()); - EXPECT_EQ(true, value.hasOverflowed()); - } -}; - -template <typename type, typename Coercer> -class IgnoreMixedSignednessTest { -public: - static void run() { } -}; - -template <typename type> class CoerceLiteralToUnsigned { -public: - static unsigned coerce(type x) { return static_cast<unsigned>(x); } -}; - -template <typename type> class CoerceLiteralNop { -public: - static type coerce(type x) { return x; } -}; +#define CoerceLiteralToUnsigned(x) x##U +#define CoerceLiteralNop(x) x +#define AllowMixedSignednessTest(x) x +#define IgnoreMixedSignednessTest(x) CheckedArithmeticTest(int8_t, CoerceLiteralNop, IgnoreMixedSignednessTest) CheckedArithmeticTest(int16_t, CoerceLiteralNop, IgnoreMixedSignednessTest) CheckedArithmeticTest(int32_t, CoerceLiteralNop, AllowMixedSignednessTest) @@ -426,62 +146,4 @@ CheckedArithmeticTest(uint32_t, CoerceLiteralToUnsigned, AllowMixedSignednessTes CheckedArithmeticTest(int64_t, CoerceLiteralNop, IgnoreMixedSignednessTest) CheckedArithmeticTest(uint64_t, CoerceLiteralToUnsigned, IgnoreMixedSignednessTest) -TEST(CheckedArithmeticTest, IsInBounds) -{ - // bigger precision, signed, signed - EXPECT_TRUE(WTF::isInBounds<int32_t>(std::numeric_limits<int16_t>::max())); - EXPECT_TRUE(WTF::isInBounds<int32_t>(std::numeric_limits<int16_t>::min())); - - // bigger precision, unsigned, signed - EXPECT_TRUE(WTF::isInBounds<uint32_t>(std::numeric_limits<int32_t>::max())); - EXPECT_FALSE(WTF::isInBounds<uint32_t>(std::numeric_limits<int16_t>::min())); - - EXPECT_FALSE(WTF::isInBounds<uint32_t>((int32_t)-1)); - EXPECT_FALSE(WTF::isInBounds<uint16_t>((int32_t)-1)); - EXPECT_FALSE(WTF::isInBounds<unsigned long>((int)-1)); - - EXPECT_TRUE(WTF::isInBounds<uint32_t>((int32_t)1)); - EXPECT_TRUE(WTF::isInBounds<uint32_t>((int16_t)1)); - EXPECT_TRUE(WTF::isInBounds<unsigned>((int)1)); - - EXPECT_TRUE(WTF::isInBounds<uint32_t>((int32_t)0)); - EXPECT_TRUE(WTF::isInBounds<uint16_t>((int32_t)0)); - EXPECT_TRUE(WTF::isInBounds<uint32_t>((int16_t)0)); - EXPECT_TRUE(WTF::isInBounds<unsigned>((int)0)); - - EXPECT_TRUE(WTF::isInBounds<uint32_t>(std::numeric_limits<int32_t>::max())); - EXPECT_TRUE(WTF::isInBounds<uint32_t>(std::numeric_limits<int16_t>::max())); - EXPECT_TRUE(WTF::isInBounds<unsigned>(std::numeric_limits<int>::max())); - - // bigger precision, signed, unsigned - EXPECT_TRUE(WTF::isInBounds<int32_t>(std::numeric_limits<uint16_t>::max())); - EXPECT_FALSE(WTF::isInBounds<int32_t>(std::numeric_limits<uint32_t>::max())); - EXPECT_TRUE(WTF::isInBounds<int32_t>((uint32_t)0)); - - // bigger precision, unsigned, unsigned - EXPECT_TRUE(WTF::isInBounds<uint32_t>(std::numeric_limits<uint16_t>::max())); - EXPECT_TRUE(WTF::isInBounds<uint32_t>(std::numeric_limits<uint16_t>::min())); - - // lower precision, signed signed - EXPECT_FALSE(WTF::isInBounds<int16_t>(std::numeric_limits<int32_t>::max())); - EXPECT_FALSE(WTF::isInBounds<int16_t>(std::numeric_limits<int32_t>::min())); - EXPECT_TRUE(WTF::isInBounds<int16_t>((int32_t)-1)); - EXPECT_TRUE(WTF::isInBounds<int16_t>((int32_t)0)); - EXPECT_TRUE(WTF::isInBounds<int16_t>((int32_t)1)); - // lower precision, unsigned, signed - EXPECT_FALSE(WTF::isInBounds<uint16_t>(std::numeric_limits<int32_t>::max())); - EXPECT_FALSE(WTF::isInBounds<uint16_t>(std::numeric_limits<int32_t>::min())); - EXPECT_FALSE(WTF::isInBounds<uint16_t>((int32_t)-1)); - EXPECT_TRUE(WTF::isInBounds<uint16_t>((int32_t)0)); - EXPECT_TRUE(WTF::isInBounds<uint16_t>((int32_t)1)); - // lower precision, signed, unsigned - EXPECT_FALSE(WTF::isInBounds<int16_t>(std::numeric_limits<uint32_t>::max())); - EXPECT_TRUE(WTF::isInBounds<int16_t>((uint32_t)0)); - EXPECT_TRUE(WTF::isInBounds<int16_t>((uint32_t)1)); - // lower precision, unsigned, unsigned - EXPECT_FALSE(WTF::isInBounds<uint16_t>(std::numeric_limits<uint32_t>::max())); - EXPECT_TRUE(WTF::isInBounds<uint16_t>((uint32_t)0)); - EXPECT_TRUE(WTF::isInBounds<uint16_t>((uint32_t)1)); -} - } // namespace TestWebKitAPI |