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| author | Edward Welbourne <edward.welbourne@qt.io> | 2019-03-13 19:15:27 +0100 |
|---|---|---|
| committer | Edward Welbourne <edward.welbourne@qt.io> | 2019-03-27 13:43:21 +0000 |
| commit | 7d74404325118bb1551c38b3bae418b42db843a1 (patch) | |
| tree | 69560ebb05f3cc88a1c1c57a9738aee9724896ec /tests/auto | |
| parent | 369305a9be0eb96513be66a70611259d33842cfc (diff) | |
Replace a misguided test with a valid one
The code had min and max of an integral type and tested min + min / 2,
which naturally overflowed, provoking a compiler warning. The test
was meant to be testing min - min / 2; but min is even, so this is
just min / 2; and doubling that won't overflow (which is what the test
is about). As it happens, min + min / 2 is in fact max - max / 2,
which *would* be a good value to test, since max is odd. So add a
test for that and remove the broken test.
Change-Id: Iec34acbf0d5d7993d41ff844875dc10480b8eb1f
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'tests/auto')
| -rw-r--r-- | tests/auto/corelib/global/qnumeric/tst_qnumeric.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/auto/corelib/global/qnumeric/tst_qnumeric.cpp b/tests/auto/corelib/global/qnumeric/tst_qnumeric.cpp index e567e465f7..0a84b1fdd8 100644 --- a/tests/auto/corelib/global/qnumeric/tst_qnumeric.cpp +++ b/tests/auto/corelib/global/qnumeric/tst_qnumeric.cpp @@ -508,13 +508,13 @@ template <typename Int> static void mulOverflow_template() QCOMPARE(mul_overflow(Int(max / 2), Int(3), &r), true); QCOMPARE(mul_overflow(mid1, Int(mid2 + 1), &r), true); QCOMPARE(mul_overflow(Int(max / 2 + 2), Int(2), &r), true); + QCOMPARE(mul_overflow(Int(max - max / 2), Int(2), &r), true); QCOMPARE(mul_overflow(Int(1ULL << (std::numeric_limits<Int>::digits - 1)), Int(2), &r), true); if (min) { QCOMPARE(mul_overflow(min, Int(2), &r), true); QCOMPARE(mul_overflow(Int(min / 2), Int(3), &r), true); QCOMPARE(mul_overflow(Int(min / 2 - 1), Int(2), &r), true); - QCOMPARE(mul_overflow(Int(min + min/2), Int(2), &r), true); } #endif } |