[glibmm] gmmproc: Fix _WRAP_SIGNAL(custom_c_callback) for void func().

[Kjell Ahlstedt <kjellahl src gnome org>]

commit cd18cbff8b3679ae6fe3429fb7119251241521fe
Author: Kjell Ahlstedt <kjell ahlstedt bredband net>
Date:   Mon Apr 29 09:19:53 2013 +0200

    gmmproc: Fix _WRAP_SIGNAL(custom_c_callback) for void func().
    
    * tools/m4/signal.m4: If custom_c_callback is specified, and the signal
    handler takes no arguments and returns void, generate a SignalProxyInfo
    structure with pointers to local functions instead of
    &Glib::SignalProxyNormal::slot0_void_callback. Bug #605728.

 ChangeLog          |    9 +++++++++
 tools/m4/signal.m4 |    5 +++--
 2 files changed, 12 insertions(+), 2 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 61e3d07..444a428 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2013-04-29  Kjell Ahlstedt  <kjell ahlstedt bredband net>
+
+       gmmproc: Fix _WRAP_SIGNAL(custom_c_callback) for void func().
+
+       * tools/m4/signal.m4: If custom_c_callback is specified, and the signal
+       handler takes no arguments and returns void, generate a SignalProxyInfo
+       structure with pointers to local functions instead of
+       &Glib::SignalProxyNormal::slot0_void_callback. Bug #605728.
+
 2013-04-25  José Alburquerque  <jaalburquerque gmail com>
 
        Interface: Add a comment about overriding properties in constructor.
diff --git a/tools/m4/signal.m4 b/tools/m4/signal.m4
index f9802eb..bb487ea 100644
--- a/tools/m4/signal.m4
+++ b/tools/m4/signal.m4
@@ -34,9 +34,10 @@ ifelse(`$11',,,`#ifdef $11'
 ifelse(`$9',,,`_DEPRECATE_IFDEF_START
 ')dnl
 dnl
-ifelse($2`'_NUM($3)`'$5`'_NUM($6),`void0void0',`dnl
+ifelse($2`'_NUM($3)`'$5`'_NUM($6)`'$8,`void0void00',`dnl
 dnl
-dnl Use predefined callback for SignalProxy0<void>, to reduce code size.
+dnl Use predefined callback for SignalProxy0<void>, to reduce code size,
+dnl if custom_c_callback is not specified.
 
 static const Glib::SignalProxyInfo __CPPNAME__`'_signal_$4_info =
 {