Details
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Bug
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Resolution: Unresolved
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P3: Somewhat important
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None
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5.15.0
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None
Description
https://codereview.qt-project.org/c/qt/qtbase/+/251241 from peppe made a change to enable deprecations by default, beginning with Qt 5.13.0.
This change has no effect for MSVC toolchains, since the related deprecation warning is set to warning level 4 by Qt.
FWIW, here are the warning switches (cl.exe parameters) that I see with Qt 5.15.0 with an empty qmake application (Qt Creator template):
-W3 -w34100 -w34189 -w44996 -w44456 -w44457 -w44458 -wd4577 -wd4467
... which means that the warning level is set to W3 while warning 4996 (deprecation warnings) is explicitly overridden to be a W4 warning instead of a W3 warning.
This makes the whole handling of deprecations in Qt inconsistent with the MSVC toolchains, and that is IMHO not a good state for Qt 5.15.
Attachments
Gerrit Reviews
| For Gerrit Dashboard: QTBUG-85227 | ||||||
|---|---|---|---|---|---|---|
| # | Subject | Branch | Project | Status | CR | V |
| 305614,6 | MSVC: Enable deprecation warnings (C4996) | dev | qt/qtbase | Status: NEW | +1 | 0 |
| 307827,2 | WIP: Test 'MSVC: Enable deprecation warnings (C4996)' in qtbase | 5.15 | qt/qt5 | Status: ABANDONED | -2 | 0 |
| 310104,6 | MSVC: Fix C4996 warnings when building Qt | dev | qt/qtbase | Status: MERGED | +2 | 0 |
| 310156,3 | MSVC: Fix C4996 warnings in 5.15 when building Qt | 5.15 | qt/qtbase | Status: MERGED | +2 | 0 |
| 310408,2 | MSVC: Fix C4996 warnings when building Qt | 5.15 | qt/qtbase | Status: MERGED | +2 | 0 |