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Merge pull request #15 from podusowski/fix-aliasing-issue

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use char type directly to avoid invalid aliasing
This commit is contained in:
Edward Diener
2018-03-30 23:36:02 -04:00
committed by GitHub
parent bd9c06bd37 0ee8e59d0a
commit 0482db3a79
1 changed files with 3 additions and 1 deletions
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4
include/boost/function/function_template.hpp
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@ -992,7 +992,9 @@ namespace boost {
if (!f.empty()) { if (!f.empty()) {
this->vtable = f.vtable; this->vtable = f.vtable;
if (this->has_trivial_copy_and_destroy()) if (this->has_trivial_copy_and_destroy())
this->functor = f.functor; // Don't operate on storage directly since union type doesn't relax
// strict aliasing rules, despite of having member char type.
std::memcpy(this->functor.data, f.functor.data, sizeof(this->functor.data));
else else
get_vtable()->base.manager(f.functor, this->functor, get_vtable()->base.manager(f.functor, this->functor,
boost::detail::function::move_functor_tag); boost::detail::function::move_functor_tag);