diff options
Diffstat (limited to 'src/corelib/text/qcollator_posix.cpp')
-rw-r--r-- | src/corelib/text/qcollator_posix.cpp | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/src/corelib/text/qcollator_posix.cpp b/src/corelib/text/qcollator_posix.cpp index 54c700015b..5ed80c1b8e 100644 --- a/src/corelib/text/qcollator_posix.cpp +++ b/src/corelib/text/qcollator_posix.cpp @@ -69,13 +69,19 @@ QCollatorSortKey QCollator::sortKey(const QString &string) const if (d->isC()) { std::copy(original.cbegin(), original.cend(), result.begin()); } else { - size_t size = std::wcsxfrm(result.data(), original.constData(), string.size()); - if (size > size_t(result.size())) { - result.resize(size+1); - size = std::wcsxfrm(result.data(), original.constData(), string.size()); + auto availableSizeIncludingNullTerminator = result.size(); + size_t neededSizeExcludingNullTerminator = std::wcsxfrm( + result.data(), original.constData(), availableSizeIncludingNullTerminator); + if (neededSizeExcludingNullTerminator > size_t(availableSizeIncludingNullTerminator - 1)) { + result.resize(neededSizeExcludingNullTerminator + 1); + availableSizeIncludingNullTerminator = result.size(); + neededSizeExcludingNullTerminator = std::wcsxfrm(result.data(), original.constData(), + availableSizeIncludingNullTerminator); + Q_ASSERT(neededSizeExcludingNullTerminator + == size_t(availableSizeIncludingNullTerminator - 1)); } - result.resize(size+1); - result[size] = 0; + result.resize(neededSizeExcludingNullTerminator + 1); + result[neededSizeExcludingNullTerminator] = 0; } return QCollatorSortKey(new QCollatorSortKeyPrivate(std::move(result))); } |