Here are the data structures with brief descriptions:

C__attribute__
Cage
Ccomplex_data
Cdc_ankerl_index_small
Cdc_ankerl_mdata
Cdc_debug_fmt	Debug format helpers for debug printin data structures
Cemployee
CERROR
Cfixed_string
Cfoo
Chr_system
Citem_t	A queue comprised of an extendable circular buffer
CITER
CITER_CONST
CIV_PAIR
CIV_PAIR_CONST
CKEY_ENTRY
CKV_PAIR
CKV_PAIR_CONST
Cmutation_tracker	Tracks a specific version of a value, so that this can be compared later to check modification For example, checking iterator invalidation in debug mode
Cmutation_version
Cname
COK
Creport
Creport_id
CSELF	An allocator that prints to stdout when it allocates or frees memory
CSLOT
CTRACKED_ENTRY
CVALUE
Cvalue_t