RE: [sdcc-devel] Re: [ sdcc-Bugs-460185 ] Cast fools optimizer

[Kevin V. <kv...@lu...>]

On 10-Sep-2001 Johan Knol wrote:
> Can we close this bug now (and report a gcc bug)?

gcc lists this as an 'extention' (it treats pointers to void or functions
as having size 1); the option -Wpointer-arith gives a warning for this,
but there is no way to make it an error (except of course for -Werror).

I can't make sense of the ISO spec this morning (not enough coffee
yet...) but I think it would be perfectly legal to throw at least a
warning, if not an error, when someone does arithmetic on a void pointer.
I will look at doing this (but I have actual work to do, so it may take a
day or two).

        Peace,
                Kevin