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Bug fix: trampoline_self_life_support CpCtor, MvCtor. (#2947)

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Ralf W. Grosse-Kunstleve
2021-04-13 05:34:46 -07:00
committed by GitHub
parent 6c922614ed
commit 8efd5e3820
4 changed files with 132 additions and 6 deletions
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16
include/pybind11/trampoline_self_life_support.h
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@@ -22,6 +22,8 @@ PYBIND11_NAMESPACE_END(detail)
struct trampoline_self_life_support {
detail::value_and_holder v_h;
trampoline_self_life_support() = default;
void activate_life_support(const detail::value_and_holder &v_h_) {
Py_INCREF((PyObject *) v_h_.inst);
v_h = v_h_;
@@ -46,12 +48,14 @@ struct trampoline_self_life_support {
}
}
// Some compilers complain about implicitly defined versions of some of the following:
trampoline_self_life_support() = default;
trampoline_self_life_support(const trampoline_self_life_support &) = default;
trampoline_self_life_support(trampoline_self_life_support &&) = default;
trampoline_self_life_support &operator=(const trampoline_self_life_support &) = default;
trampoline_self_life_support &operator=(trampoline_self_life_support &&) = default;
// For the next two, the default implementations generate undefined behavior (ASAN failures
// manually verified). The reason is that v_h needs to be kept default-initialized.
trampoline_self_life_support(const trampoline_self_life_support &) {}
trampoline_self_life_support(trampoline_self_life_support &&) {}
// These should never be needed (please provide test cases if you think they are).
trampoline_self_life_support &operator=(const trampoline_self_life_support &) = delete;
trampoline_self_life_support &operator=(trampoline_self_life_support &&) = delete;
};
PYBIND11_NAMESPACE_END(PYBIND11_NAMESPACE)