array bounds checking

"dz" <drizzle76@gmail.com>
26 Nov 2005 00:23:47 -0500

          From comp.compilers

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array bounds checking drizzle76@gmail.com (dz) (2005-11-26)
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Re: array bounds checking gah@ugcs.caltech.edu (glen herrmannsfeldt) (2005-12-03)
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From: "dz" <drizzle76@gmail.com>
Newsgroups: comp.compilers
Date: 26 Nov 2005 00:23:47 -0500
Organization: http://groups.google.com
Keywords: debug, question

Hi
      I am wondering if anybody knew how array bounds checks worked when
they are references through multiple indirections of pointers. Eg: p =
A ; q= &p; ***q+100=0; So q is referencing A. And hence I would like
a check inserted there.
                    Do array bounds checking handle these cases, because this
also would need pointer analysis.


Any ideas/pointers to any papers ...
thanks
dz
[Depends on the language and implementation. If it has "fat" pointers that contain
type info, then the bounds can be in the pointers, or pointed to by fields in the
pointers. -John]



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