[lasem] build: don't use void * pointer arithmetic.

[Emmanuel Pacaud <emmanuel src gnome org>]

commit dac2b839e8543829a3ab196e1f76070cbc03e180
Author: Emmanuel Pacaud <emmanuel gnome org>
Date:   Thu Apr 4 23:18:23 2013 +0200

    build: don't use void * pointer arithmetic.
    
    It's a non portable gcc extension.

 src/lsmattributes.c |   10 +++++-----
 src/lsmproperties.c |   10 +++++-----
 2 files changed, 10 insertions(+), 10 deletions(-)
---
diff --git a/src/lsmattributes.c b/src/lsmattributes.c
index d4798ed..ce08dfd 100644
--- a/src/lsmattributes.c
+++ b/src/lsmattributes.c
@@ -35,7 +35,7 @@ lsm_attribute_is_defined (const LsmAttribute *attribute)
        return attribute->value != NULL;
 }
 
-#define ATTRIBUTE_TRAIT(attribute) ((void *) (((void *) attribute) + sizeof (LsmAttribute)))
+#define ATTRIBUTE_TRAIT(attribute) ((void *) (((char *) attribute) + sizeof (LsmAttribute)))
 
 struct _LsmAttributeManager {
        GHashTable *                    hash_by_name;
@@ -146,7 +146,7 @@ lsm_attribute_manager_set_attribute (LsmAttributeManager *manager,
        if (attribute_infos == NULL)
                return FALSE;
 
-       attribute = (void *)(instance + attribute_infos->attribute_offset);
+       attribute = (void *)(((char *) instance) + attribute_infos->attribute_offset);
        g_return_val_if_fail (attribute != NULL, FALSE);
 
        trait_class = attribute_infos->trait_class;
@@ -199,7 +199,7 @@ lsm_attribute_manager_get_attribute (LsmAttributeManager *manager,
        if (attribute_infos == NULL)
                return NULL;
 
-       attribute = (void *)(instance + attribute_infos->attribute_offset);
+       attribute = (void *)(((char *)instance) + attribute_infos->attribute_offset);
        g_return_val_if_fail (attribute != NULL, NULL);
 
        return attribute->value;
@@ -222,7 +222,7 @@ lsm_attribute_manager_clean_attributes (LsmAttributeManager *manager,
                attribute_infos = value;
                trait_class = attribute_infos->trait_class;
 
-               attribute = (void *)(instance + attribute_infos->attribute_offset);
+               attribute = (void *)(((char *)instance) + attribute_infos->attribute_offset);
                g_free (attribute->value);
                attribute->value = NULL;
 
@@ -251,7 +251,7 @@ lsm_attribute_manager_serialize     (LsmAttributeManager *manager,
        g_hash_table_iter_init (&iter, manager->hash_by_name);
        while (g_hash_table_iter_next (&iter, &key, &value)) {
                attribute_infos = value;
-               attribute = (void *)(instance + attribute_infos->attribute_offset);
+               attribute = (void *)(((char *)instance) + attribute_infos->attribute_offset);
 
                if (attribute->value != NULL) {
                        if (!attribute_found) {
diff --git a/src/lsmproperties.c b/src/lsmproperties.c
index b8d824b..4f78055 100644
--- a/src/lsmproperties.c
+++ b/src/lsmproperties.c
@@ -26,7 +26,7 @@
 #include <lsmstr.h>
 #include <string.h>
 
-#define PROPERTY_TRAIT(property) ((void *) (((void *) property) + sizeof (LsmProperty)))
+#define PROPERTY_TRAIT(property) ((void *) (((char *) property) + sizeof (LsmProperty)))
 #define PROPERTY_SIZE(trait_class) (trait_class->size + sizeof (LsmProperty))
 
 struct _LsmPropertyManager {
@@ -341,13 +341,13 @@ lsm_property_manager_apply_property_bag (LsmPropertyManager *manager,
                if (property->id < manager->n_properties) {
                        if (manager->property_check[property->id] != manager->property_check_count) {
                                if (g_strcmp0 (property->value, "inherit") != 0)
-                                       *((LsmProperty **) ((void*) style
+                                       *((LsmProperty **) ((char *) style
                                                            + LSM_PROPERTY_ID_TO_OFFSET (property->id))) = 
property;
                                else {
                                        if (parent_style != NULL)
-                                               *((LsmProperty **) ((void*) style
+                                               *((LsmProperty **) ((char *) style
                                                                    + LSM_PROPERTY_ID_TO_OFFSET 
(property->id))) =
-                                                       *((LsmProperty **) ((void*) parent_style
+                                                       *((LsmProperty **) ((char *) parent_style
                                                                            + LSM_PROPERTY_ID_TO_OFFSET 
(property->id)));
                                }
 
@@ -404,7 +404,7 @@ void lsm_property_manager_init_default_style (LsmPropertyManager *property_manag
                        trait_class->from_string (PROPERTY_TRAIT (property),
                                                  (char *) property_infos->trait_default);
 
-               *((LsmProperty **) ((void*) style
+               *((LsmProperty **) ((char *) style
                                    + LSM_PROPERTY_ID_TO_OFFSET (property->id))) = property;
        }
 }