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cleanup after separating references

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This commit is contained in:
Andrzej Krzemienski
2016-02-18 00:24:59 +01:00
parent 87ef503606
commit c653372524
2 changed files with 36 additions and 52 deletions
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18
include/boost/optional/detail/optional_aligned_storage.hpp
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@ -46,6 +46,24 @@ class aligned_storage
void const* address() const { return dummy_.data; }
void * address() { return dummy_.data; }
#endif
#if defined(BOOST_OPTIONAL_DETAIL_USE_ATTRIBUTE_MAY_ALIAS)
// This workaround is supposed to silence GCC warnings about broken strict aliasing rules
T const& ref() const
{
union { void const* ap_pvoid; T const* as_ptype; } caster = { address() };
return *caster.as_ptype;
}
T & ref()
{
union { void* ap_pvoid; T* as_ptype; } caster = { address() };
return *caster.as_ptype;
}
#else
T const& ref() const { return *static_cast<T const*>(address()); }
T & ref() { return *static_cast<T *> (address()); }
#endif
} ;
} // namespace optional_detail