On Mon 01 Apr 2013 22:03, Mark H Weaver <m...@netris.org> writes:
>>> SCM z = scm_cons (SCM_EOL, SCM_EOL);
>>> - scm_t_port *entry = (scm_t_port *) scm_gc_calloc (sizeof (scm_t_port),
>>> "port");
>>> + scm_t_port *entry = scm_gc_typed_calloc (scm_t_port);
>>> + scm_t_port_internal *pti = scm_gc_typed_calloc (scm_t_port_internal);
>>> const char *enc;
>>
>> How about allocating a struct { scm_t_port a; scm_t_port_internal b; }
>> and get the pointers from there?
>
> I was hoping to do something like this in master, but having thought
> about it some more, I don't see how to do this without running afoul of
> the strict aliasing rules.
Though we already violate them in innumerable ways in Guile, this is not
one of those cases:
struct foo { a a; b b; } *foo;
foo = malloc (sizeof (*foo));
a* a = &bar.a;
b* b = &bar.b;
Andy
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