C standard compliance?

[David Kastrup <dak@gnu.org>]

Hi, I am wondering if I may compare pointers with < that have been
created using different calls of malloc.

The C standard does not allow this (inequalities are only allowed for
pointers into the same structure) to allow for some cheapskate sort of
comparison in segmented architectures.

Now of course being able to _sort_ pointers also allows to _collate_
them.  It totally does not matter just _what_ their ordering relation is
as long as it yields to a sorting function (namely obeys some basic
relations).

The question is whether this kind of undefined behavior (which almost
never is implemented in unexpected ways) is frowned upon in the Git
codebase or not.

-- 
David Kastrup