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Add odr_guard_registry() used in type_caster_odr_guard() default constructor.

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Ralf W. Grosse-Kunstleve 2022-06-11 23:05:07 -07:00
parent c84f3817c4
commit 5c7e77c575
1 changed files with 22 additions and 1 deletions
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23
include/pybind11/cast.h
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@ -24,8 +24,11 @@
#include <iterator>
#include <memory>
#include <string>
#include <system_error>
#include <tuple>
#include <type_traits>
#include <typeindex>
#include <unordered_map>
#include <utility>
#include <vector>
@ -44,8 +47,26 @@ class type_caster_for_class_ : public type_caster_base<T> {};
template <typename type, typename SFINAE = void>
class type_caster : public type_caster_for_class_<type> {};
inline std::unordered_map<std::type_index, std::type_index> &odr_guard_registry() {
static std::unordered_map<std::type_index, std::type_index> reg;
return reg;
}
template <typename IntrinsicType>
struct type_caster_odr_guard : type_caster<IntrinsicType> {};
struct type_caster_odr_guard : type_caster<IntrinsicType> {
type_caster_odr_guard() {
auto it_ti = std::type_index(typeid(IntrinsicType));
auto tc_ti = std::type_index(typeid(type_caster<IntrinsicType>));
auto match = odr_guard_registry().find(it_ti);
if (match == odr_guard_registry().end()) {
odr_guard_registry().insert({it_ti, tc_ti});
} else if (match->second != tc_ti) {
throw std::system_error(std::make_error_code(std::errc::state_not_recoverable),
"pybind11::detail::type_caster<" + type_id<IntrinsicType>()
+ "> ODR VIOLATION DETECTED");
}
}
};
template <typename type>
using make_caster = type_caster_odr_guard<intrinsic_t<type>>;