[Bug tree-optimization/104475] [12/13 Regression] Wstringop-overflow + atomics incorrect warning on dynamic object

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104475

--- Comment #21 from Richard Biener <rguenth at gcc dot gnu.org> ---
When the C++ frontend sees

    QMutexLocker lock(&d->m_mutex);

it could hint the middle-end via emitting

    [[assume (&d->m_mutex != nullptr)]]
    QMutexLocker lock(&d->m_mutex);

instead.