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| author | Stephen McCamant <smcc@mit.edu> | 2004-12-28 08:01:49 -0800 |
|---|---|---|
| committer | Rafael Garcia-Suarez <rgarciasuarez@gmail.com> | 2005-01-21 14:09:19 +0000 |
| commit | f31c3107030f031d9abc088f3d5f450116edba5b (patch) | |
| tree | d99c4f155a3aee3469bc84bb4ac47da4e76d028e /ext/B | |
| parent | 0c49ea6ab2795f5fde8510752a5ebb44587caca8 (diff) | |
| download | perl-f31c3107030f031d9abc088f3d5f450116edba5b.tar.gz | |
[perl #32967] [PATCH] Re: More B bugs: svref_2object
Message-ID: <16849.62445.116153.489478@apocalypse.OCF.Berkeley.EDU>
p4raw-id: //depot/perl@23845
Diffstat (limited to 'ext/B')
| -rw-r--r-- | ext/B/B.pm | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/ext/B/B.pm b/ext/B/B.pm index b70c7105b9..4110fe234a 100644 --- a/ext/B/B.pm +++ b/ext/B/B.pm @@ -368,6 +368,10 @@ class. Apart from functions such as C<main_root>, this is the primary way to get an initial "handle" on an internal perl data structure which can then be followed with the other access methods. +The returned object will only be valid as long as the underlying OPs +and SVs continue to exist. Do not attempt to use the object after the +underlying structures are freed. + =item amagic_generation Returns the SV object corresponding to the C variable C<amagic_generation>. @@ -523,7 +527,11 @@ The bulk of the C<B> module is the methods for accessing fields of these structures. Note that all access is read-only. You cannot modify the internals by -using this module. +using this module. Also, note that the B::OP and B::SV objects created +by this module are only valid for as long as the underlying objects +exist; their creation doesn't increase the reference counts of the +underlying objects. Trying to access the fields of a freed object will +give incomprehensible results, or worse. =head2 SV-RELATED CLASSES |