Re: Comparing Pika-syle and JNI-style Tom Lord 15 Jan 2004 02:35 UTC
> From: Shiro Kawai <email@example.com>
> > Given the scheme_value, I read the address of the malloced (or inline)
> > string and operate on that. At this point the scheme_value, if I'm
> > not otherwise using it, is a dead variable as far as C is concerned.
> > Should the scheme value be collected while I'm working on the string,
> > the string data will be freed out from under me.
> As Per noted, Boehm GC avoids this if configured with "interior
> pointer" flag.
Ok, but that doesn't help if the data is separately allocated.
Or, for that matter, if my pointer is pointed past the end of the
string but I'm indexing at a negative offset from it.
The whole thing just plays way too fast and loose with C semantics to
be acceptable for critical systems.