re PR ada/56274 (libada bootstrap failure on kfreebsd ("pthread_rwlock_t" not…

re PR ada/56274 (libada bootstrap failure on kfreebsd ("pthread_rwlock_t" not declared in "OS_Interface"))

	PR ada/56274
	* s-osinte-kfreebsd-gnu.ads (pthread_rwlock_t): New subtype.
	(pthread_rwlockattr_t): Likewise.

From-SVN: r231337

gcc/ada/ChangeLog

+2015-12-06  Eric Botcazou  <ebotcazou@adacore.com>
+
+	PR ada/56274
+	* s-osinte-kfreebsd-gnu.ads (pthread_rwlock_t): New subtype.
+	(pthread_rwlockattr_t): Likewise.
+
 2015-12-06  Ludovic Brenta  <ludovic@ludovic-brenta.org>
 
 	PR ada/49944

gcc/ada/s-osinte-kfreebsd-gnu.ads

@@ -292,6 +292,14 @@ package System.OS_Interface is
    PTHREAD_SCOPE_PROCESS : constant := 0;
    PTHREAD_SCOPE_SYSTEM  : constant := 2;
 
+   --  Read/Write lock not supported on kfreebsd. To add support both types
+   --  pthread_rwlock_t and pthread_rwlockattr_t must properly be defined
+   --  with the associated routines pthread_rwlock_[init/destroy] and
+   --  pthread_rwlock_[rdlock/wrlock/unlock].
+
+   subtype pthread_rwlock_t     is pthread_mutex_t;
+   subtype pthread_rwlockattr_t is pthread_mutexattr_t;
+
    -----------
    -- Stack --
    -----------