Zengtudor/pybind11
1
0
Fork 0
mirror of https://github.com/pybind/pybind11.git synced 2024-11-29 08:32:02 +00:00
Code Issues Packages Projects Releases Wiki Activity

Merge branch 'bakein_prep_on_master' into bakein

Browse Source
This commit is contained in:
Ralf W. Grosse-Kunstleve 2024-07-18 01:29:47 -07:00
commit 4aa2f6b8eb
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/pybind11/detail/init.h
View File

@ -129,11 +129,13 @@ void construct(value_and_holder &v_h, Cpp<Class> *ptr, bool need_alias) {
// the holder and destruction happens when we leave the C++ scope, and the holder // the holder and destruction happens when we leave the C++ scope, and the holder
// class gets to handle the destruction however it likes. // class gets to handle the destruction however it likes.
v_h.value_ptr() = ptr; v_h.value_ptr() = ptr;
v_h.set_instance_registered(true); // To prevent init_instance from registering it v_h.set_instance_registered(true); // Trick to prevent init_instance from registering it
// DANGER ZONE BEGIN: exceptions will leave v_h in an invalid state.
v_h.type->init_instance(v_h.inst, nullptr); // Set up the holder v_h.type->init_instance(v_h.inst, nullptr); // Set up the holder
Holder<Class> temp_holder(std::move(v_h.holder<Holder<Class>>())); // Steal the holder Holder<Class> temp_holder(std::move(v_h.holder<Holder<Class>>())); // Steal the holder
v_h.type->dealloc(v_h); // Destroys the moved-out holder remains, resets value ptr to null v_h.type->dealloc(v_h); // Destroys the moved-out holder remains, resets value ptr to null
v_h.set_instance_registered(false); v_h.set_instance_registered(false);
// DANGER ZONE END.
construct_alias_from_cpp<Class>(is_alias_constructible<Class>{}, v_h, std::move(*ptr)); construct_alias_from_cpp<Class>(is_alias_constructible<Class>{}, v_h, std::move(*ptr));
} else { } else {