Re: [Tinycc-devel] alinged/unaligned on OpenBSD

[grischka]

Herman ten Brugge via Tinycc-devel wrote:
> The problem is that packed structeres should probably always use
> single_byte code.
> For example:
> -----
> struct __attribute__((packed)) {
>   char a;
>   int b;
> } s;
>
> int
> main(void)
> {
>   s.b = 3;
> }
> -----
> Also fails to run on arm32 (openbsd).
> I do not have a solution. But maybe Grischka can solve this?

Don't know, maybe look what gcc does?

However, with your example, for example, one could take the address
    int *p = &s.b;
and pass that to other functions, as well.  There is not much
that the compiler could do.

For the 96_nodata_wanted test using 'packed' or not probably would
not make much difference, at least on ARM.  Maybe it was supposed
to test single-byte access under code suppression.  But why shouldn't
it work anyway.

--- grischka

>     Herman