http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58065
David Abdurachmanov <david.abdurachmanov at gmail dot com> changed:
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--- Comment #5 from David Abdurachmanov <david.abdurachmanov at gmail dot com>
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malloc() [glibc implementation] default alignment is sizeof(long double) or 2 *
sizeof(size_t) if I remember correctly, which is 8 bytes for ARMv7. I think,
based on C and C++ standard you have to make sure that alignment is good for
whatever primitive type, which means alignment size being the size of the
biggest primitive type (long double).
Reference bug ticket(9 years old):
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15795
Quote from C standard (identical or similar exist in C++):
The pointer returned if the allocation succeeds is suitably aligned so that
it may be assigned to a pointer to any type of object and then used to
access such an object or an array of such objects in the space allocated
(until the space is explicitly deallocated).
