id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
2263	On PA-RISC with GCC 4.3.1, thread primitives are misdetected	river@…	Peter Dimov	"In at least two places (boost/detail/spinlock.hpp and boost/detail/atomic_count.hpp), Boost assumes that if the following condition is true:

defined( __GNUC__ ) && ( __GNUC__ * 100 + __GNUC_MINOR__ >= 401 )

then GCC sync primitives (e.g. __sync_lock_test_and_set, __sync_fetch_and_add) are available.  This is not correct; GCC 4.3.1 on PA-RISC does not provide these operations.  The following link error results:

/usr/ccs/bin/ld: Unsatisfied symbols:
   __sync_add_and_fetch_4 (first referenced in main.o) (code)

The test can be fixed like this:

defined( __GNUC__ ) && ( __GNUC__ * 100 + __GNUC_MINOR__ >= 401 ) && !defined(__hppa)

However, it seems like it would be more resiliant to list the platforms which do support these primitves (e.g. Itanium, i386...) rather than excepting specific platforms.

(Tested on HP-UX 11.11 using HP GCC 4.3.1 on a PA-8200 CPU.)"	Bugs	closed	Boost 1.37.0	None	Boost 1.36.0	Problem	fixed