id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
5622	interprocess::named_semaphore::remove return value broken on POSIX systems	Horst Schirmeier <horst@…>	Ion Gaztañaga	"'''static bool named_semaphore::remove(const char *name)''' is documented as ""Returns false on error"", which is broken on POSIX platforms if BOOST_INTERPROCESS_NAMED_SEMAPHORE_USES_POSIX_SEMAPHORES is enabled.

'''named_semaphore::remove()''' (interprocess/sync/named_semaphore.hpp:166) calls '''static bool detail::named_semaphore_wrapper::remove(const char *name)''', which (interprocess/sync/posix/semaphore_wrapper.hpp:229) calls '''inline bool semaphore_unlink(const char *name)''' (:106).  This function uses the POSIX API call sem_unlink() (:115) to do the unlinking:

{{{ return 0 != sem_unlink(sem_str.c_str()); }}}

This makes semaphore_unlink() return '''false''' if sem_unlink() returns 0.  POSIX' sem_unlink() is documented to return 0 on '''success''', though: ""Upon successful completion, the sem_unlink() function shall return a value of 0."" (POSIX API docs)
interprocess/sync/posix/semaphore_wrapper.hpp:115 should be changed to the following:

{{{ return 0 == sem_unlink(sem_str.c_str()); }}}"	Bugs	closed	To Be Determined	interprocess	Boost Development Trunk	Problem	fixed