Re: Adding garbage collection to C++

tmb@idiap.ch
Mon, 17 Aug 1992 15:57:49 GMT

          From comp.compilers
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[2 later articles]
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Newsgroups: comp.compilers
From: tmb@idiap.ch
Organization: IDIAP (Institut Dalle Molle d'Intelligence Artificielle Perceptive)
Date: Mon, 17 Aug 1992 15:57:49 GMT
References: 92-08-052 92-08-069
Keywords: C, GC

fjh@cs.mu.OZ.AU (Fergus Henderson) writes:


>[C lets you hide pointers in inconvenient ways, e.g. writing them to
>files or scrambling bytes in unions.]


All the locations where a pointer is converted to an integer (via casts,
unions, or memcpy) are detectable by the compiler. For any pointer that
has ever been (mis-)treated in such a way, the corresponding memory can
simply be exempted from garbage collection (e.g., by recording the pointer
in some global table searched by the garbage collector).


Thomas.
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