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| author | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2014-09-13 23:49:28 +0000 |
|---|---|---|
| committer | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2014-09-13 23:49:28 +0000 |
| commit | e7f6d9e25ab69cc986d10ad8d9ce91610f14b378 (patch) | |
| tree | e7c7871904f6baebfa0d80001ec0f20c156ccf63 /ChangeLog | |
| parent | a5fc33c0e234e5ad80a9ed2a8413c2f50e508482 (diff) | |
| download | ruby-e7f6d9e25ab69cc986d10ad8d9ce91610f14b378.tar.gz | |
ccan/container_of: add container_of_or_null
* ccan/container_of/container_of.h (container_of_or_null): added
[ccan 7ec5b8e06b2fd5fa98b1fcde1158c286d2d429d8] (David Gibson)
It's quite common to have a pointer which could be either a pointer to a
structure member, or NULL. This needs special casing with container_of(),
or it will convert NULL into something strange.
This patch adds container_of_or_null(), which will return NULL if passed
(an appropriately typed) NULL, or the containining structure as
container_of() otherwise.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47579 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 5 |
1 files changed, 5 insertions, 0 deletions
@@ -1,3 +1,8 @@ +Sun Sep 14 08:43:37 2014 Eric Wong <e@80x24.org> + + * ccan/container_of/container_of.h (container_of_or_null): added + [ccan 7ec5b8e06b2fd5fa98b1fcde1158c286d2d429d8] (David Gibson) + Sun Sep 14 08:41:44 2014 Eric Wong <e@80x24.org> * ccan/list/list.h (list_del_init, list_node_init): new functions |