diff -r 7f1f309a34f8 widget/src/gtk2/nsClipboard.cpp
--- a/mozilla/widget/src/gtk2/nsClipboard.cpp	Thu Oct 22 12:45:52 2009 +0800
+++ b/mozilla/widget/src/gtk2/nsClipboard.cpp	Fri Nov 13 11:19:27 2009 +0100
@@ -424,25 +424,25 @@ nsClipboard::HasDataMatchingFlavors(cons
     for (PRUint32 i = 0; i < aLength && !*_retval; i++) {
         // We special case text/unicode here.
         if (!strcmp(aFlavorList[i], kUnicodeMime) && 
             gtk_selection_data_targets_include_text(selection_data)) {
             *_retval = PR_TRUE;
             break;
         }
 
         for (PRInt32 j = 0; j < n_targets; j++) {
             gchar *atom_name = gdk_atom_name(targets[j]);
-            if (!strcmp(atom_name, aFlavorList[i]))
+            if (!g_strcmp0(atom_name, aFlavorList[i]))
                 *_retval = PR_TRUE;
 
             // X clipboard wants image/jpeg, not image/jpg
-            if (!strcmp(aFlavorList[i], kJPEGImageMime) && !strcmp(atom_name, "image/jpeg"))
+            if (!g_strcmp0(aFlavorList[i], kJPEGImageMime) && !g_strcmp0(atom_name, "image/jpeg"))
                 *_retval = PR_TRUE;
 
             g_free(atom_name);
 
             if (*_retval)
                 break;
         }
     }
     gtk_selection_data_free(selection_data);
     g_free(targets);
diff -r 7f1f309a34f8 widget/src/gtk2/nsDragService.cpp
--- a/mozilla/widget/src/gtk2/nsDragService.cpp	Thu Oct 22 12:45:52 2009 +0800
+++ b/mozilla/widget/src/gtk2/nsDragService.cpp	Fri Nov 13 11:19:27 2009 +0100
@@ -824,50 +824,47 @@ nsDragService::IsDataFlavorSupported(con
 
     // check the target context vs. this flavor, one at a time
     GList *tmp;
     for (tmp = mTargetDragContext->targets; tmp; tmp = tmp->next) {
         /* Bug 331198 */
         GdkAtom atom = GDK_POINTER_TO_ATOM(tmp->data);
         gchar *name = NULL;
         name = gdk_atom_name(atom);
         PR_LOG(sDragLm, PR_LOG_DEBUG,
                ("checking %s against %s\n", name, aDataFlavor));
-        if (name && (strcmp(name, aDataFlavor) == 0)) {
+        if (g_strcmp0(name, aDataFlavor) == 0) {
             PR_LOG(sDragLm, PR_LOG_DEBUG, ("good!\n"));
             *_retval = PR_TRUE;
         }
         // check for automatic text/uri-list -> text/x-moz-url mapping
         if (*_retval == PR_FALSE && 
-            name &&
-            (strcmp(name, gTextUriListType) == 0) &&
-            (strcmp(aDataFlavor, kURLMime) == 0)) {
+            (g_strcmp0(name, gTextUriListType) == 0) &&
+            (g_strcmp0(aDataFlavor, kURLMime) == 0)) {
             PR_LOG(sDragLm, PR_LOG_DEBUG,
                    ("good! ( it's text/uri-list and \
                    we're checking against text/x-moz-url )\n"));
             *_retval = PR_TRUE;
         }
         // check for automatic _NETSCAPE_URL -> text/x-moz-url mapping
         if (*_retval == PR_FALSE && 
-            name &&
-            (strcmp(name, gMozUrlType) == 0) &&
-            (strcmp(aDataFlavor, kURLMime) == 0)) {
+            (g_strcmp0(name, gMozUrlType) == 0) &&
+            (g_strcmp0(aDataFlavor, kURLMime) == 0)) {
             PR_LOG(sDragLm, PR_LOG_DEBUG,
                    ("good! ( it's _NETSCAPE_URL and \
                    we're checking against text/x-moz-url )\n"));
             *_retval = PR_TRUE;
         }
         // check for auto text/plain -> text/unicode mapping
         if (*_retval == PR_FALSE && 
-            name &&
-            (strcmp(name, kTextMime) == 0) &&
-            ((strcmp(aDataFlavor, kUnicodeMime) == 0) ||
-             (strcmp(aDataFlavor, kFileMime) == 0))) {
+            (g_strcmp0(name, kTextMime) == 0) &&
+            ((g_strcmp0(aDataFlavor, kUnicodeMime) == 0) ||
+             (g_strcmp0(aDataFlavor, kFileMime) == 0))) {
             PR_LOG(sDragLm, PR_LOG_DEBUG,
                    ("good! ( it's text plain and we're checking \
                    against text/unicode or application/x-moz-file)\n"));
             *_retval = PR_TRUE;
         }
         g_free(name);
     }
     return NS_OK;
 }
 
@@ -974,21 +971,21 @@ nsDragService::IsTargetContextList(void)
 
     GList *tmp;
 
     // walk the list of context targets and see if one of them is a list
     // of items.
     for (tmp = mTargetDragContext->targets; tmp; tmp = tmp->next) {
         /* Bug 331198 */
         GdkAtom atom = GDK_POINTER_TO_ATOM(tmp->data);
         gchar *name = NULL;
         name = gdk_atom_name(atom);
-        if (strcmp(name, gMimeListType) == 0)
+        if (g_strcmp0(name, gMimeListType) == 0)
             retval = PR_TRUE;
         g_free(name);
         if (retval)
             break;
     }
     return retval;
 }
 
 // Maximum time to wait for a "drag_received" arrived, in microseconds
 #define NS_DND_TIMEOUT 500000