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| author | Marc Mutz <marc.mutz@kdab.com> | 2012-09-26 16:16:14 +0200 |
|---|---|---|
| committer | The Qt Project <gerrit-noreply@qt-project.org> | 2012-09-27 02:25:15 +0200 |
| commit | a19fd0f9265bed96197a6823887c6f03fc23112d (patch) | |
| tree | 28d010e431e4b9381656a426a3734761c58a35f9 | |
| parent | ce1f994e9bcdea963a81a4bf562a8317cf6e0089 (diff) | |
QFlags: fail for 64-bit enums
An int is not enough to hold all values of a 64-bit enum, so
don't allow to compile QFlags for such enums.
Change-Id: Ia291c4a5e2160dfd6d5a35e61a7f71ab571b9d9a
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
| -rw-r--r-- | src/corelib/global/qflags.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/corelib/global/qflags.h b/src/corelib/global/qflags.h index 7cf06d7e88..faacf7321c 100644 --- a/src/corelib/global/qflags.h +++ b/src/corelib/global/qflags.h @@ -77,6 +77,9 @@ Q_DECL_CONSTEXPR inline QIncompatibleFlag::QIncompatibleFlag(int ai) : i(ai) {} template<typename Enum> class QFlags { + Q_STATIC_ASSERT_X((sizeof(Enum) <= sizeof(int)), + "QFlags uses an int as storage, so an enum with underlying " + "long long would overflow. Qt 5.1 will have support for 64bit enums."); struct Private; typedef int (Private::*Zero); int i; |