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Re: [PATCH 0/5] obstacks again

From: Andreas Schwab
Subject: Re: [PATCH 0/5] obstacks again
Date: Sat, 06 Dec 2014 10:48:07 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4 (gnu/linux)

Alan Modra <address@hidden> writes:

> The alternative is to do as Paul suggested and make obstack_blank
> accept a negative length argument, but that would
> - kill >2G obstacks on 32-bit targets,
> - lose the nice symmetry with other obstack functions,
> and obstack_blank_fast is the right interface to use for shrinking.

It would reintroduce the nice symmetry that the *_fast functions are
just optimisations of the non-fast functions (if you know that the
obstack has enough space), without surprising behaviour change.


Andreas Schwab, address@hidden
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