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Avoid local_internals destruction (#4192)

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* Avoid local_internals destruction

It allows to avoid possible static deinitialization fiasco.

* Add link to relevant google style guide discussion
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bogdan-lab 2022-09-21 21:50:31 +03:00 committed by GitHub
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include/pybind11/detail/internals.h
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@ -514,8 +514,13 @@ struct local_internals {
/// Works like `get_internals`, but for things which are locally registered. /// Works like `get_internals`, but for things which are locally registered.
inline local_internals &get_local_internals() { inline local_internals &get_local_internals() {
static local_internals locals; // Current static can be created in the interpreter finalization routine. If the later will be
return locals; // destroyed in another static variable destructor, creation of this static there will cause
// static deinitialization fiasco. In order to avoid it we avoid destruction of the
// local_internals static. One can read more about the problem and current solution here:
// https://google.github.io/styleguide/cppguide.html#Static_and_Global_Variables
static auto *locals = new local_internals();
return *locals;
} }
/// Constructs a std::string with the given arguments, stores it in `internals`, and returns its /// Constructs a std::string with the given arguments, stores it in `internals`, and returns its