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Bug
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Resolution: Done
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P2: Important
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5.6.0 Alpha
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None
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Mageia Linux Cauldron x86_64, gcc 5.2.1
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6ae2bfad41 (qt/qtbase/dev) 6ae2bfad41 (qt/tqtc-qtbase/dev) 28390ce4aa (qt/qtbase/6.4) 28390ce4aa (qt/tqtc-qtbase/6.4) 49de278cd2 (qt/qtbase/6.3) 49de278cd2 (qt/tqtc-qtbase/6.3) 062423a7a1 (qt/tqtc-qtbase/5.15) c5c7daf67a (qt/tqtc-qtbase/6.2)
+underlined text+In the documentation example I see the usage of previous filter. I think, it is meant to use in the following way:
oldCategoryFilter = QLoggingCategory::installFilter(myCategoryFilter);
This code leads to crash, as QLoggingCategory::installFilter() call myCategoryFilter() when oldCategoriFilter is not valid yet.
The workaround is to use this code:
oldCategoryFilter = QLoggingCategory::installFilter(Q_NULLPTR); QLoggingCategory::installFilter(myCategoryFilter);
This is not obvious and looks like a hack, so I think it is either a bug, or should be pointed in documentation.
| For Gerrit Dashboard: QTBUG-49704 | ||||||
|---|---|---|---|---|---|---|
| # | Subject | Branch | Project | Status | CR | V |
| 142612,1 | Add QLoggingCategory::filter() accessor | 5.6 | qt/qtbase | Status: ABANDONED | 0 | 0 |
| 142613,5 | Add QLoggingCategory::filter() accessor | dev | qt/qtbase | Status: ABANDONED | 0 | 0 |
| 414085,10 | Fix doc and example of QLoggingCategory::installCategory() | dev | qt/qtbase | Status: MERGED | +2 | 0 |
| 416028,2 | Fix doc and example of QLoggingCategory::installCategory() | 6.4 | qt/qtbase | Status: MERGED | +2 | 0 |
| 416029,3 | Fix doc and example of QLoggingCategory::installCategory() | 6.3 | qt/qtbase | Status: MERGED | +2 | 0 |
| 416030,3 | Fix doc and example of QLoggingCategory::installCategory() | tqtc/lts-6.2 | qt/tqtc-qtbase | Status: MERGED | +2 | 0 |
| 416031,3 | Fix doc and example of QLoggingCategory::installCategory() | tqtc/lts-5.15 | qt/tqtc-qtbase | Status: MERGED | +2 | 0 |