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Merge branch 'master' into smart_holder

This commit is contained in:
Ralf W. Grosse-Kunstleve 2021-07-15 10:13:07 -07:00
parent 88546fff7d 5cd3750757
commit 6d1026763a
2 changed files with 22 additions and 2 deletions
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1
include/pybind11/detail/pragma_warning_block.h
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@ -25,7 +25,6 @@
# pragma GCC diagnostic ignored "-Wunused-but-set-parameter"
# pragma GCC diagnostic ignored "-Wunused-but-set-variable"
# pragma GCC diagnostic ignored "-Wmissing-field-initializers"
# pragma GCC diagnostic ignored "-Wstrict-aliasing"
# pragma GCC diagnostic ignored "-Wattributes"
# if __GNUC__ >= 7
# pragma GCC diagnostic ignored "-Wnoexcept-type"

23
include/pybind11/pybind11.h
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@ -23,10 +23,18 @@
#include "detail/smart_holder_sfinae_hooks_only.h"
#include <memory>
#include <new>
#include <vector>
#include <string>
#include <utility>
#if defined(__cpp_lib_launder) && !(defined(_MSC_VER) && (_MSC_VER < 1914))
# define PYBIND11_STD_LAUNDER std::launder
# define PYBIND11_HAS_STD_LAUNDER 1
#else
# define PYBIND11_STD_LAUNDER
# define PYBIND11_HAS_STD_LAUNDER 0
#endif
#if defined(__GNUG__) && !defined(__clang__)
# include <cxxabi.h>
#endif
@ -125,8 +133,21 @@ protected:
#if defined(__GNUG__) && __GNUC__ >= 6 && !defined(__clang__) && !defined(__INTEL_COMPILER)
# pragma GCC diagnostic pop
#endif
#if defined(__GNUG__) && !PYBIND11_HAS_STD_LAUNDER && !defined(__INTEL_COMPILER)
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wstrict-aliasing"
#endif
// UB without std::launder, but without breaking ABI and/or
// a significant refactoring it's "impossible" to solve.
if (!std::is_trivially_destructible<Func>::value)
rec->free_data = [](function_record *r) { ((capture *) &r->data)->~capture(); };
rec->free_data = [](function_record *r) {
auto data = PYBIND11_STD_LAUNDER((capture *) &r->data);
(void) data;
data->~capture();
};
#if defined(__GNUG__) && !PYBIND11_HAS_STD_LAUNDER && !defined(__INTEL_COMPILER)
# pragma GCC diagnostic pop
#endif
} else {
rec->data[0] = new capture { std::forward<Func>(f) };
rec->free_data = [](function_record *r) { delete ((capture *) r->data[0]); };