On Tue, 6 Mar 2012, Eric Botcazou wrote:

> > Well.  I suppose fixing that negative DECL_FIELD_OFFSET thing should
> > be #1 priority.
> OK, let me try over the next few days.


Btw, making [s]bitsizetype have TYPE_PRECISION of [s]sizetype plus
log2 (BITS_PER_UNIT) solves quite some issues with no longer
sign-extending sizetype constants.  A proper-precision bitsizetype
behaves more like a twos-complement type (and avoids similar
issues we have when doing "twos-complement" arithmetic on an
unsigned HOST_WIDE_INT variable that we get from a -m32
sizetype constant on a 64bit HWI host - for that we'd need a
HOST_SIZE_INT, maybe a good idea anyway?).


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