Details
-
Task
-
Resolution: Done
-
P2: Important
-
None
-
3
-
d9280bb63b (qt/qtbase/dev) d9280bb63b (qt/tqtc-qtbase/dev)
Description
Since b057e32dc455d81f9378d6bd0c58888a7eddd155 was merged (https://codereview.qt-project.org/c/qt/qtbase/+/427765), tst_qset::qhash() has become flaky. This is reproducible by running the test in a tight loop:
i=0 while qtbase/tests/auto/corelib/tools/qset/tst_qset qhash > /dev/null 2>&1; do let '++i' echo -n "$i " done
I cannot get more than a few dozen runs in w/o failure:
marc@nobby:~/Qt/qt5-build-clang$ i=0; while qtbase/tests/auto/corelib/tools/qset/tst_qset qhash > /dev/null 2>&1; do let '++i'; echo -n "$i "; done; echo $i 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 32 marc@nobby:~/Qt/qt5-build-clang$ i=0; while qtbase/tests/auto/corelib/tools/qset/tst_qset qhash > /dev/null 2>&1; do let '++i'; echo -n "$i "; done; echo $i 1 2 3 4 5 6 6 marc@nobby:~/Qt/qt5-build-clang$ i=0; while qtbase/tests/auto/corelib/tools/qset/tst_qset qhash > /dev/null 2>&1; do let '++i'; echo -n "$i "; done; echo $i 1 2 3 4 5 5 marc@nobby:~/Qt/qt5-build-clang$ i=0; while qtbase/tests/auto/corelib/tools/qset/tst_qset qhash > /dev/null 2>&1; do let '++i'; echo -n "$i "; done; echo $i 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 18 marc@nobby:~/Qt/qt5-build-clang$ i=0; while qtbase/tests/auto/corelib/tools/qset/tst_qset qhash > /dev/null 2>&1; do let '++i'; echo -n "$i "; done; echo $i 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 65 marc@nobby:~/Qt/qt5-build-clang$ i=0; while qtbase/tests/auto/corelib/tools/qset/tst_qset qhash > /dev/null 2>&1; do let '++i'; echo -n "$i "; done; echo $i 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20 marc@nobby:~/Qt/qt5-build-clang$ i=0; while qtbase/tests/auto/corelib/tools/qset/tst_qset qhash > /dev/null 2>&1; do let '++i'; echo -n "$i "; done; echo $i 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 42 marc@nobby:~/Qt/qt5-build-clang$ i=0; while qtbase/tests/auto/corelib/tools/qset/tst_qset qhash > /dev/null 2>&1; do let '++i'; echo -n "$i "; done; echo $i 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 38 marc@nobby:~/Qt/qt5-build-clang$ i=0; while qtbase/tests/auto/corelib/tools/qset/tst_qset qhash > /dev/null 2>&1; do let '++i'; echo -n "$i "; done; echo $i 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20 marc@nobby:~/Qt/qt5-build-clang$ i=0; while qtbase/tests/auto/corelib/tools/qset/tst_qset qhash > /dev/null 2>&1; do let '++i'; echo -n "$i "; done; echo $i 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 15 marc@nobby:~/Qt/qt5-build-clang$ i=0; while qtbase/tests/auto/corelib/tools/qset/tst_qset qhash > /dev/null 2>&1; do let '++i'; echo -n "$i "; done; echo $i 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 40
If I revert b057e32dc455d81f9378d6bd0c58888a7eddd155 locally, then the same loop spins up to 10k without failing.
Attachments
| For Gerrit Dashboard: QTBUG-107725 | ||||||
|---|---|---|---|---|---|---|
| # | Subject | Branch | Project | Status | CR | V |
| 438700,4 | tst_QSet: fix flakiness after we removed the fixed, non-zero seed | dev | qt/qtbase | Status: MERGED | +2 | 0 |