normal e7f6d9e25a 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		2014-09-13 23:49:28 +00:00
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container_of	ccan/container_of: add container_of_or_null	2014-09-13 23:49:28 +00:00
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