https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=192267
Bug ID: 192267
Summary: queue(3) doesn't note that HEADNAME argument in *_HEAD
macro is optional/creates anonymous structs
Product: Documentation
Version: Latest
Hardware: Any
OS: Any
Status: Needs Triage
Severity: Affects Some People
Priority: ---
Component: Documentation
Assignee: freebsd-doc@FreeBSD.org
Reporter: yaneurab...@gmail.com
Some of the code in the tree uses the data structures in a one-off manner, such
that specifying the HEADNAME value for the *_HEAD macro isn't required. What
omitting HEADNAME does is creates an anonymous structure for describing the
data structure/pointers, whereas specifying HEADNAME creates a named structure
for describing the data structure/pointers, i.e.
149 #define SLIST_HEAD(name, type) \
150 struct name { \
151 struct type *slh_first; /* first element */ \
152 }
...
242 #define STAILQ_HEAD(name, type) \
243 struct name { \
244 struct type *stqh_first;/* first element */ \
245 struct type **stqh_last;/* addr of last next element */ \
246 }
...
363 #define LIST_HEAD(name, type) \
364 struct name { \
365 struct type *lh_first; /* first element */ \
366 }
...
491 #define TAILQ_HEAD(name, type) \
492 struct name { \
493 struct type *tqh_first; /* first element */ \
494 struct type **tqh_last; /* addr of last next element */ \
495 TRACEBUF \
496 }
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