Makefile.in (C_SOURCE_FILES): Added methods.c.

2010-10-12  Nicola Pero  <nicola.pero@meta-innovation.com>

        * Makefile.in (C_SOURCE_FILES): Added methods.c.
        * encoding.c (method_getNumberOfArguments): New.
        (method_get_number_of_arguments): Call
        method_getNumberOfArguments.
        * ivars.c (ivar_getName): Check for NULL variable argument.
        (ivar_getOffset): Check for NULL variable argument.
        (ivar_getTypeEncoding): Check for NULL variable argument.
        (class_copyIvarList): New.
        * methods.c: New.
        * protocols.c (class_copyProtocolList): Check for Nil class_
        argument.
        * sendmsg.c: Use 'struct objc_method *' instead of Method_t, and
        'struct objc_method_list *' instead of MethodList_t.
        (class_getMethodImplementation): New.
        (class_respondsToSelector): New.
        (class_getInstanceMethod): New.
        (class_getClassMethod): New.
        * objc/runtime.h: Updated comments.
        (class_copyIvarList): New.
        (class_getInstanceMethod): New.
        (class_getClassMethod): New.
        (class_getMethodImplementation): New.
        (class_respondsToSelector): New.
        (method_getName): New.
        (method_getImplementation): New.
        (method_getTypeEncoding): New.
        (class_copyMethodList): New.
        (method_getNumberOfArguments): New.

From-SVN: r165400

1 files changed, 7 insertions, 0 deletions

diff --git a/libobjc/protocols.c b/libobjc/protocols.c
index 6d42980..bc714ae 100644
--- a/libobjc/protocols.c
+++ b/libobjc/protocols.c
@@ -211,6 +211,13 @@ class_copyProtocolList (Class class_, unsigned int *numberOfReturnedProtocols)
   Protocol **returnValue = NULL;
   struct objc_protocol_list* proto_list;
 
+  if (class_ == Nil)
+    {
+      if (numberOfReturnedProtocols)
+	*numberOfReturnedProtocols = 0;
+      return NULL;
+    }
+
   /* Lock the runtime mutex because the class protocols may be
      concurrently modified.  */
   objc_mutex_lock (__objc_runtime_mutex);