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Silence 'cast increases required alignment of target type' warnings

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These warnings are emitted on some GCC versions when targeting ARM; the
alignment is guaranteed to be correct due to how page offsets are set up
but the compiler doesn't know.
This commit is contained in:
Arseny Kapoulkine 2016-11-18 09:49:31 -08:00
parent 9366f25136
commit 8df9f97cda
1 changed files with 2 additions and 1 deletions
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3
src/pugixml.cpp
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@ -424,7 +424,8 @@ PUGI__NS_BEGIN
#define PUGI__GETPAGE_IMPL(header) (header).get_page() #define PUGI__GETPAGE_IMPL(header) (header).get_page()
#else #else
#define PUGI__GETHEADER_IMPL(object, page, flags) (((reinterpret_cast<char*>(object) - reinterpret_cast<char*>(page)) << 8) | (flags)) #define PUGI__GETHEADER_IMPL(object, page, flags) (((reinterpret_cast<char*>(object) - reinterpret_cast<char*>(page)) << 8) | (flags))
#define PUGI__GETPAGE_IMPL(header) const_cast<impl::xml_memory_page*>(reinterpret_cast<const impl::xml_memory_page*>(reinterpret_cast<const char*>(&header) - (header >> 8))) // this macro casts pointers through void* to avoid 'cast increases required alignment of target type' warnings
#define PUGI__GETPAGE_IMPL(header) static_cast<impl::xml_memory_page*>(const_cast<void*>(static_cast<const void*>(reinterpret_cast<const char*>(&header) - (header >> 8))))
#endif #endif
#define PUGI__GETPAGE(n) PUGI__GETPAGE_IMPL((n)->header) #define PUGI__GETPAGE(n) PUGI__GETPAGE_IMPL((n)->header)