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fix: capture stack checkpoint before pushing args in operator() (#469)

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Jason Matthew Suhari 2026-03-20 12:18:57 +08:00
parent a2f16e5f1f
commit cce0ae24ff
1 changed files with 8 additions and 1 deletions
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9
include/pybind11/internal/function.h
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@ -70,6 +70,7 @@ args_proxy interface<Derived>::operator* () const {
template <typename Derived>
template <return_value_policy policy, typename... Args>
object interface<Derived>::operator() (Args&&... args) const {
py_StackRef p0 = py_peek(0); // checkpoint before pushing so py_clearexc can safely rewind
py_push(ptr());
py_pushnil();
@ -108,7 +109,13 @@ object interface<Derived>::operator() (Args&&... args) const {
(foreach(std::forward<Args>(args)), ...);
raise_call<py_vectorcall>(argc, kwargsc);
if(!py_vectorcall(argc, kwargsc)) {
py_matchexc(tp_Exception);
object e = object::from_ret();
auto what = py_formatexc();
py_clearexc(p0);
throw python_error(what, std::move(e));
}
return object::from_ret();
}