Protocol hack for gcc < 3.3

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/libobjc/trunk@17470 72102866-910b-0410-8b05-ffd578937521

ChangeLog

@@ -1,14 +1,3 @@
-Wed Jul 30 17:45:21 2003  Nicola Pero  <n.pero@mi.flashnet.it>
-
-	* Protocol.m ([-conformsTo:]): If the argument is nil, return NO.
-	([-hash], [-isEqual:]): New methods.
-	(Suggestion by Jeremy Bettis <jeremy@deadbeef.com>)
-
-2001-07-04  Richard Frith-Macdonald  <rrfm@gnu.org>
-
-	* Protocol.m: ([-descriptionForClassMethod:])
-	([-descriptionForInstanceMethod:]) fix dereference of null pointer.
-
 2003-02-20  Alexandre Oliva  <aoliva@redhat.com>
 
 	* configure.in: Propagate ORIGINAL_LD_FOR_MULTILIBS to

ChangeLog.GNUstep

@@ -1,3 +1,25 @@
+2003-08-12  Adam Fedor  <fedor@gnu.org>
+
+	* thr-posix.c (__objc_thread_set_priority): Don't use if
+	__OpenBSD__
+
+2003-08-12  Jeremy Bettis <jeremy@deadbeef.com>
+
+	* sendmsg.c (objc_msg_lookup): If GCC < 3.3, if the receiver
+	object has a class pointer which is equal to the PROTOCOL_VERSION
+	number (0x2), then make it into a proper Protocol object.
+
+Wed Jul 30 17:45:21 2003  Nicola Pero  <n.pero@mi.flashnet.it>
+
+	* Protocol.m ([-conformsTo:]): If the argument is nil, return NO.
+	([-hash], [-isEqual:]): New methods.
+	(Suggestion by Jeremy Bettis <jeremy@deadbeef.com>)
+
+2001-07-04  Richard Frith-Macdonald  <rrfm@gnu.org>
+
+	* Protocol.m: ([-descriptionForClassMethod:])
+	([-descriptionForInstanceMethod:]) fix dereference of null pointer.
+
 2003-06-27  Adam Fedor  <fedor@gnu.org>
 
 	* thr-posix.c: Add sched_param struct if missing

sendmsg.c

@@ -174,6 +174,22 @@ objc_msg_lookup (id receiver, SEL op)
   IMP result;
   if (receiver)
     {
+#if __GNUC__ < 3 || (__GNUC__ == 3&& __GNUC_MINOR__ < 3)
+#define PROTOCOL_VERSION 2 // needs to match what is in init.c
+      // This is a dirty hack for GCC < 3.3
+      // Protocols that are referenced in a module, but not implemented by a
+      // class declared in that same module never get initialized, so if
+      // we see the magic number PROTOCOL_VERSION, then the object must be
+      // a Protocol.  It may be just corrupted memory, but in that case
+      // we are going to crash anyway, so no harm done.
+      if (receiver->class_pointer == (void*)PROTOCOL_VERSION) {
+  		static Class proto_class = 0;
+  		if (!proto_class)
+    	  proto_class = objc_lookup_class ("Protocol");
+        if (proto_class)
+          receiver->class_pointer = proto_class;
+      }
+#endif
       result = sarray_get_safe (receiver->class_pointer->dtable, 
 				(sidx)op->sel_id);
       if (result == 0)

thr-posix.c

@@ -102,7 +102,7 @@ __objc_thread_detach(void (*func)(void *arg), void *arg)
 int
 __objc_thread_set_priority(int priority)
 {
-#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
+#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING) && !defined(__OpenBSD__)
   pthread_t thread_id = pthread_self();
   int policy;
   struct sched_param params;