From: Jarkko Hietaniemi <jhi@iki.fi>
Date: Sat, 19 Jan 2002 17:55:55 +0000 (+0000)
Subject: Integrate perlio:
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=75828062e812267d86f47b1848dee6b0da376c2d;p=p5sagit%2Fp5-mst-13.2.git

Integrate perlio:

[ 14335]
Split out core of sv_magic() into sv_magicext().
sv_magic provides the extra restictions (no READONLY, only
one of each type, canned set of vtables), and sv_magicext()
does the actual data twiddling.
Also enhances semantics of ->mg_ptr setting via name/namlen
to allow either an uncopied ptr (namlen == 0), or a Newz()ed
scratch area (namlen > 0 && name == NULL).
sv_magicext also returns the MAGIC * it added.
sv_magicext is intended mainly for PERL_MAGIC_ext (~) magic.
To come sv_unmagicext() - which will remove just one magic
of particular type, and additionaly match against ->mg_ptr,
or the MAGIC * (need to experiment as to which is more natural).

p4raw-link: @14335 on //depot/perlio: 92110913508b9944d111285d9488f2f7b604919c

p4raw-id: //depot/perl@14346
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75828062e812267d86f47b1848dee6b0da376c2d