diff options
| -rw-r--r-- | src/corelib/tools/qvarlengtharray.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/corelib/tools/qvarlengtharray.h b/src/corelib/tools/qvarlengtharray.h index de13f2c829..8032663045 100644 --- a/src/corelib/tools/qvarlengtharray.h +++ b/src/corelib/tools/qvarlengtharray.h @@ -682,6 +682,9 @@ Q_OUTOFLINE_TEMPLATE typename QVarLengthArray<T, Prealloc>::iterator QVarLengthA qsizetype l = qsizetype(aend - cbegin()); qsizetype n = l - f; + if (n == 0) // avoid UB in std::move() below + return data() + f; + if constexpr (QTypeInfo<T>::isComplex) { std::move(begin() + l, end(), QT_MAKE_CHECKED_ARRAY_ITERATOR(begin() + f, size() - f)); std::destroy(end() - n, end()); |