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Re: Override malloc,calloc,realloc and free?

Douglas A. Gwyn
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Jun Woong wrote:
> But, is there behavior which doesn't affect the program's output but
> which still affects the program's conformance?

I still don't understand what the problem is supposed to be.
A program might not *have* any output if it is rejected by the
implementation for containing undefined behavior etc.
There are essentially three kinds of program behavior:
(1) specified.
(2) unspecified but "stable".
(3) undefined.
A s.c. program contains no instances of (3).
A s.c. program can contain instances of (2), but its output
shall not depend on which of the allowed choices the
implementation has made for each such instance (except for
locale-specific behavior, which we intentionally allow to
affect the output as a special kludge to encourage use of
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