Details
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Bug
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Resolution: Done
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P2: Important
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5.8.0, 5.9.0
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WIndows 10 64bit, MinGW 5.3 32bit g++ (i686-win32-dwarf-rev0, Built by MinGW-W64 project) 5.3.0, release builds only and Kubuntu 16.04/64bit gcc 5.4
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55d2d4cfc0b5c64b0fd8a80b868673971200f7c4
Description
The construct
union {
qle_bitfield<...> type;
qle_bitfield<...> flags;
}
in two places in QV4::CompiledData::Property and ::Binding causes test failures below:
********* Start testing of tst_qqmlecmascript ********* Config: Using QtTest library 5.9.1, Qt 5.9.1 (i386-little_endian-ilp32 shared (dynamic) release build; by GCC 5.3.0) PASS : tst_qqmlecmascript::initTestCase() FAIL! : tst_qqmlecmascript::readonlyDeclaration() Compared values are not the same Actual (object->property("test").toBool()): 0 Expected (true) : 1 tst_qqmlecmascript.cpp(5407) : failure location PASS : tst_qqmlecmascript::cleanupTestCase() Totals: 2 passed, 1 failed, 0 skipped, 0 blacklisted, 25ms ********* Finished testing of tst_qqmlecmascript *********
Similar:
********* Start testing of tst_qqmlecmascript ********* Config: Using QtTest library 5.9.1, Qt 5.9.1 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC 5.4.0 20160609) PASS : tst_qqmlecmascript::initTestCase() FAIL! : tst_qqmlecmascript::readonlyDeclaration() Compared values are not the same Actual (object->property("test").toBool()): 0 Expected (true) : 1 Loc: [tst_qqmlecmascript.cpp(5407)] PASS : tst_qqmlecmascript::cleanupTestCase() Totals: 2 passed, 1 failed, 0 skipped, 0 blacklisted, 280ms ********* Finished testing of tst_qqmlecmascript *********
QTRY_COMPARE() does not help. The value is QVariant(bool, false)
Component.onCompleted bails out at
qtdeclarative\tests\auto\qml\qqmlecmascript\data\readonlyDeclaration.qml:25:
caught = false; try { test1 = 13 } catch (e) { caught = true; } if (!caught) return;
since the readonly property "test1" is happily set to 13 and so the final test = true is not reached.
(See https://codereview.qt-project.org/#/c/195399/ )
PASS : tst_qqmlvaluetypes::groupedInterceptors(value-interceptor) QWARN : tst_qqmlvaluetypes::groupedInterceptors(component-interceptor) QQmlComponent: Component is not ready FAIL! : tst_qqmlvaluetypes::groupedInterceptors(component-interceptor) 'object != 0' returned FALSE. (file:////qtdeclarative/tests/auto/qml/qqmlvaluetypes/data/grouped_interceptors_component.qml:5 Property has already been assigned a value ) Loc: [tst_qqmlvaluetypes.cpp(1489)] QWARN : tst_qqmlvaluetypes::groupedInterceptors(ignore-interceptor) QQmlComponent: Component is not ready FAIL! : tst_qqmlvaluetypes::groupedInterceptors(ignore-interceptor) 'object != 0' returned FALSE. (file:////qtdeclarative/tests/auto/qml/qqmlvaluetypes/data/grouped_interceptors_ignore.qml:5 Property has already been assigned a value
These two failures (and possibly more) are caused by aliasing issues when gcc generates code for writing/reading these two adjacent fields in -O2 builds.
Attachments
Issue Links
- duplicates
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- Closed
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- Closed
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| For Gerrit Dashboard: QTBUG-61123 | ||||||
|---|---|---|---|---|---|---|
| # | Subject | Branch | Project | Status | CR | V |
| 196038,4 | Blacklist tests failing to gcc bitfield aliasing issues | 5.9 | qt/qtdeclarative | Status: ABANDONED | -1 | 0 |
| 196729,2 | Fix gcc5 miscompile of qle_bitfield | 5.9 | qt/qtdeclarative | Status: MERGED | +2 | 0 |