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| author | Giuseppe D'Angelo <giuseppe.dangelo@kdab.com> | 2021-09-06 17:22:34 +0200 |
|---|---|---|
| committer | Giuseppe D'Angelo <giuseppe.dangelo@kdab.com> | 2021-09-08 15:43:16 +0200 |
| commit | c44e3b119af7d306378f3a9085d084c0b7cd21e0 (patch) | |
| tree | 072796df349eb7698b637b58e4acedf686ae8e1f /src/corelib/global | |
| parent | 8337493301ae25e5afaa94777c0ee0d1e6503660 (diff) | |
Add a conditional noexcept specification to qExchange
Following P2401 (which libstdc++ and MS-STL already implement)
and [res.on.exception.handling]/5 that gives us freedom to
strenghten any noexcept specification.
Change-Id: I17ebd9148a181eb8496ace3a9d8010008160b564
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'src/corelib/global')
| -rw-r--r-- | src/corelib/global/qglobal.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/corelib/global/qglobal.h b/src/corelib/global/qglobal.h index 6467ba1984..3fabac3888 100644 --- a/src/corelib/global/qglobal.h +++ b/src/corelib/global/qglobal.h @@ -1204,6 +1204,7 @@ void qAsConst(const T &&) = delete; // like std::exchange template <typename T, typename U = T> constexpr T qExchange(T &t, U &&newValue) +noexcept(std::conjunction_v<std::is_nothrow_move_constructible<T>, std::is_nothrow_assignable<T &, U>>) { T old = std::move(t); t = std::forward<U>(newValue); |