diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/concurrent/qtconcurrentfunctionwrappers.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/concurrent/qtconcurrentfunctionwrappers.h b/src/concurrent/qtconcurrentfunctionwrappers.h index be4a09f107d..1c882d3f194 100644 --- a/src/concurrent/qtconcurrentfunctionwrappers.h +++ b/src/concurrent/qtconcurrentfunctionwrappers.h @@ -190,7 +190,13 @@ struct ReduceResultTypeHelper<Callable, // -- MapSequenceResultType template <class InputSequence, class MapFunctor> -struct MapSequenceResultType; +struct MapSequenceResultType +{ + static_assert(std::is_same_v<typename InputSequence::value_type, + QtPrivate::MapResultType<InputSequence, MapFunctor>>, + "Couldn't deduce the output sequence type, you must specify it explicitly."); + typedef InputSequence ResultType; +}; #ifndef QT_NO_TEMPLATE_TEMPLATE_PARAMETERS |