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Re: asm volatile
- To: Greg Badros <gjb at cs dot washington dot edu>
- Subject: Re: asm volatile
- From: Jim Blandy <jimb at red-bean dot com>
- Date: 26 Sep 1998 10:30:54 -0500
- Cc: guile at cygnus dot com, egcs-bugs at cygnus dot com
- References: <qrrpvd96p6i.fsf@demille.cs.washington.edu>
> scwm-constraints.hpp:71: warning: volatile qualifier ignored on asm
>
> I did not get such warnings from egcs-1.01 thru 1.03a, so something must
> have changed. I'm not sure if this is a bug in egcs, or if it's a
> change in its guarantees. If egcs is not buggy on this point, then the
> SCM_FENCE may need to be expanded away to nothing to avoid the warning
> and we need to be sure that something else is preventing code motion as
> SCM_FENCE is intended to do.
Anthony Green put in that stuff, so I've asked him if he knows what's
changed in the compiler...