diff options
Diffstat (limited to 'tests/auto/corelib/tools/qarraydata/tst_qarraydata.cpp')
| -rw-r--r-- | tests/auto/corelib/tools/qarraydata/tst_qarraydata.cpp | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/tests/auto/corelib/tools/qarraydata/tst_qarraydata.cpp b/tests/auto/corelib/tools/qarraydata/tst_qarraydata.cpp index 8bbef9bac9..f7a2fa7979 100644 --- a/tests/auto/corelib/tools/qarraydata/tst_qarraydata.cpp +++ b/tests/auto/corelib/tools/qarraydata/tst_qarraydata.cpp @@ -59,6 +59,7 @@ private slots: void alignment_data(); void alignment(); void typedData(); + void gccBug43247(); }; void tst_QArrayData::referenceCounting() @@ -522,5 +523,32 @@ void tst_QArrayData::typedData() } } +void tst_QArrayData::gccBug43247() +{ + // This test tries to verify QArrayData is not affected by GCC optimizer + // bug #43247. + // Reported on GCC 4.4.3, Linux, affects QVector + + QTest::ignoreMessage(QtDebugMsg, "GCC Optimization bug #43247 not triggered (3)"); + QTest::ignoreMessage(QtDebugMsg, "GCC Optimization bug #43247 not triggered (4)"); + QTest::ignoreMessage(QtDebugMsg, "GCC Optimization bug #43247 not triggered (5)"); + QTest::ignoreMessage(QtDebugMsg, "GCC Optimization bug #43247 not triggered (6)"); + QTest::ignoreMessage(QtDebugMsg, "GCC Optimization bug #43247 not triggered (7)"); + + SimpleVector<int> array(10, 0); + // QVector<int> vector(10, 0); + + for (int i = 0; i < 10; ++i) { + if (i >= 3 && i < 8) + qDebug("GCC Optimization bug #43247 not triggered (%i)", i); + + // When access to data is implemented through an array of size 1, this + // line lets the compiler assume i == 0, and the conditional above is + // skipped. + QVERIFY(array.at(i) == 0); + // QVERIFY(vector.at(i) == 0); + } +} + QTEST_APPLESS_MAIN(tst_QArrayData) #include "tst_qarraydata.moc" |