gdb

* symfile.c (reread_symbols): Don't pass argument to observer.
	* exec.c (exec_file_attach): Don't pass argument to observer.
	* ada-lang.c (ada_executable_changed_observer): Remove argument.
	* symtab.c (symtab_observer_executable_changed): Remove argument.
	* observer.sh: Handle functions with no arguments.
gdb/doc
	* observer.texi (GDB Observers): Remove obsolete comment.
	<executable_changed>: Remove argument.

gdb/ChangeLog

@@ -1,3 +1,11 @@
+2008-07-21  Tom Tromey  <tromey@redhat.com>
+
+	* symfile.c (reread_symbols): Don't pass argument to observer.
+	* exec.c (exec_file_attach): Don't pass argument to observer.
+	* ada-lang.c (ada_executable_changed_observer): Remove argument.
+	* symtab.c (symtab_observer_executable_changed): Remove argument.
+	* observer.sh: Handle functions with no arguments.
+
 2008-07-20  Sergei Poselenov  <sposelenov@emcraft.com>
             Chris Demetriou  <cgd@google.com>
 

gdb/ada-lang.c

@@ -9769,7 +9769,7 @@ ada_exception_support_info_sniffer (void)
    each time a new executable is loaded by GDB.  */
 
 static void
-ada_executable_changed_observer (void *unused)
+ada_executable_changed_observer (void)
 {
   /* If the executable changed, then it is possible that the Ada runtime
      is different.  So we need to invalidate the exception support info

gdb/doc/ChangeLog

@@ -1,3 +1,8 @@
+2008-07-21  Tom Tromey  <tromey@redhat.com>
+
+	* observer.texi (GDB Observers): Remove obsolete comment.
+	<executable_changed>: Remove argument.
+
 2008-07-18  Tom Tromey  <tromey@redhat.com>
 
 	* gdb.texinfo (Macros): Update.  Use @code rather than @command.

gdb/doc/observer.texi

@@ -88,8 +88,6 @@ Send a notification to all @var{event} observers.
 
 The following observable events are defined:
 
-@c note: all events must take at least one parameter.
-
 @deftypefun void normal_stop (struct bpstats *@var{bs})
 The inferior has stopped for real.
 @end deftypefun
@@ -98,7 +96,7 @@ The inferior has stopped for real.
 The target's register contents have changed.
 @end deftypefun
 
-@deftypefun void executable_changed (void *@var{unused_args})
+@deftypefun void executable_changed (void)
 The executable being debugged by GDB has changed: The user decided
 to debug a different program, or the program he was debugging has
 been modified since being loaded by the debugger (by being recompiled,
@@ -141,4 +139,3 @@ The thread specified by @var{t} has exited.
 The target was resumed.  The @var{ptid} parameter specifies which
 thread was resume, and may be RESUME_ALL if all threads are resumed.
 @end deftypefun
-

gdb/exec.c

@@ -275,7 +275,7 @@ exec_file_attach (char *filename, int from_tty)
 	(*deprecated_exec_file_display_hook) (filename);
     }
   bfd_cache_close_all ();
-  observer_notify_executable_changed (NULL);
+  observer_notify_executable_changed ();
 }
 
 /*  Process the first arg in ARGS as the new exec file.

gdb/observer.sh

@@ -123,8 +123,14 @@ EOF
 
 static struct observer_list *${event}_subject = NULL;
 
+EOF
+	if test "$formal" != "void"; then
+	    cat<<EOF >>${otmp}
 struct ${event}_args { `echo "${formal}" | sed -e 's/,/;/g'`; };
 
+EOF
+	fi
+	cat <<EOF >>${otmp}
 static void
 observer_${event}_notification_stub (const void *data, const void *args_data)
 {
@@ -150,8 +156,17 @@ observer_detach_${event} (struct observer *observer)
 void
 observer_notify_${event} (${formal})
 {
+EOF
+	if test "$formal" != "void"; then
+	    cat<<EOF >>${otmp}
   struct ${event}_args args;
   `echo ${actual} | sed -e 's/\([a-z0-9_][a-z0-9_]*\)/args.\1 = \1/g'`;
+
+EOF
+	else
+	    echo "char *args = NULL;" >> ${otmp}
+	fi
+	cat<<EOF >>${otmp}
   if (observer_debug)
     fprintf_unfiltered (gdb_stdlog, "observer_notify_${event}() called\n");
   generic_observer_notify (${event}_subject, &args);

gdb/symfile.c

@@ -2495,7 +2495,7 @@ reread_symbols (void)
       clear_symtab_users ();
       /* At least one objfile has changed, so we can consider that
          the executable we're debugging has changed too.  */
-      observer_notify_executable_changed (NULL);
+      observer_notify_executable_changed ();
     }
       
 }

gdb/symtab.c

@@ -4325,7 +4325,7 @@ main_name (void)
 /* Handle ``executable_changed'' events for the symtab module.  */
 
 static void
-symtab_observer_executable_changed (void *unused)
+symtab_observer_executable_changed (void)
 {
   /* NAME_OF_MAIN may no longer be the same, so reset it for now.  */
   set_main_name (NULL);