[Bug c++/32016] sizeof(class) always a multiple of 4 on 32 bit machine

[pbrook at gcc dot gnu dot org]

------- Comment #7 from pbrook at gcc dot gnu dot org  2007-05-21 23:55 -------
On arm-elf structures are padded/aligned to a 4-byte boundary. This is a
"feature" of the ABI. The microsoft compiler obviously conforms to a different
ABI, which is why you get different results. Both are "correct".

Any code that relies on a particular structure layout or size is inherently
unportable.

EABI based targets (eg. arm-eabi) use a more conventional ABI.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32016