[m-dev.] type punning with recent versions of gcc

[Julien Fischer]

On Thu, 24 Dec 2009, Zoltan Somogyi wrote:

> On 24-Dec-2009, Mark Brown <mark at csse.unimelb.edu.au> wrote:
>> Is it worth trying to fix the Mercury libraries to avoid the type-punning
>> warnings with recent versions of gcc?  There are lots of these, and at least
>> some of them seem to cause either mmc or compiled programs to seg fault.
>>
>> I think it would be better to just pass -fno-strict-aliasing to whatever
>> compilers support it.  Any problems with that?

-fno-strict-aliasing is available in every version of GCC
that we support now (2.95 onwards), so it should just be specified
whenever the C compiler type is GCC.

Julien.
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