Re: Bad code generated with -mabi=ms?

[Ian Lance Taylor <iant@xxxxxxxxxx>]

David Given <dg@xxxxxxxxxxx> writes:

> On 20/03/12 16:45, Ian Lance Taylor wrote:
> [...]
>> I can recreate this problem with gcc 4.6, but not with gcc 4.7.
>> 
>> I think it's a bug in gcc 4.6 that was fixed by this patch:
>> 
>> http://gcc.gnu.org/ml/gcc-patches/2011-03/msg01664.html
>
> Do you know if there are any workarounds? Installing 4.7 isn't an option
> for us, unfortunately.
>
> (Do I get the impression nobody actually uses -mabi=ms much?)

The workaround is to not use -mabi=ms when compiling in 32-bit mode.  In
32-bit mode the sysv ABI and the ms ABI are almost identical.  They are
significantly different in 64-bit mode.

In 32-bit mode, I think the sysv and ms ABI are identical unless you use
the -mrtd command line option.

Ian