"du -b --files0-from=-" running out of memory

[Pádraig Brady]

Jim Meyering wrote:
> Subject: [PATCH 1/2] argv-iter: new module
> 
> * gl/lib/argv-iter.h: New file.
> * gl/lib/argv-iter.c: New file.
> * gl/modules/argv-iter: New file.

Very useful module!

I see that --files0-from was added to `du` in Mar 2004,
so it's a nice solution to this 4 year old issue.

I notice that argv_iter does a malloc() + memcpy() per entry.
Since the sources are already NUL terminated strings
perhaps it could just return a pointer to a getdelim
realloc'd buffer which was referenced in the argv_iterator struct.

cheers,
Pádraig.

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