Revision control
++ // Copyright (C) 2025 Aurélien Brooke <aurelien@bahiasoft.fr>
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
++ // Qt-Security score:significant reason:default
++
++ #include "qalloc.h"
++
++ #include <QtCore/qalgorithms.h>
++ #include <QtCore/qtpreprocessorsupport.h>
++
++ #include <cstdlib>
++
++ #if QT_CONFIG(jemalloc)
++ #include <jemalloc/jemalloc.h>
++ #endif
++
++ QT_BEGIN_NAMESPACE
++
++ size_t QtPrivate::expectedAllocSize(size_t allocSize, size_t alignment) noexcept
++ {
++ Q_ASSERT(qPopulationCount(alignment) == 1);
++ #if QT_CONFIG(jemalloc)
++ return ::nallocx(allocSize, MALLOCX_ALIGN(alignment));
++ #endif
++ Q_UNUSED(allocSize);
++ Q_UNUSED(alignment);
++ return 0;
++ }
++
++ void QtPrivate::sizedFree(void *ptr, size_t allocSize) noexcept
++ {
++ #if QT_CONFIG(jemalloc)
++ // jemalloc is okay with free(nullptr), as required by the standard,
++ // but will asssert (in debug) or invoke UB (in release) on sdallocx(nullptr, ...),
++ // so don't allow Qt to do that.
++ if (Q_LIKELY(ptr)) {
++ ::sdallocx(ptr, allocSize, 0);
++ return;
++ }
++ #endif
++ Q_UNUSED(allocSize);
++ ::free(ptr);
++ }
++
++ QT_END_NAMESPACE