[glib] GVariant: Better handling of invalid UTF-8

[Ryan Lortie <ryanl src gnome org>]

commit e823ba10d3babd5ae61c69d96379ff34e9e978f8
Author: Ryan Lortie <desrt desrt ca>
Date:   Wed May 4 18:12:31 2011 +0200

    GVariant: Better handling of invalid UTF-8
    
    g_variant_new_string() hits a g_return_if_fail() when given invalid
    UTF-8.  That's certainly the right thing to do, but
    g_variant_builder_add() uses this function internally and crashes when
    it returns NULL due to the user passing a non-utf8 string.
    
    We can protect the internal code by returning "[Invalid UTF-8]" in this
    case while also making the problem easier to debug (and less fatal).
    
    Closes #632631.

 glib/gvariant.c |   11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)
---
diff --git a/glib/gvariant.c b/glib/gvariant.c
index 52a6349..813b3fb 100644
--- a/glib/gvariant.c
+++ b/glib/gvariant.c
@@ -3687,7 +3687,16 @@ g_variant_valist_new_nnp (const gchar **str,
         }
 
     case 's':
-      return g_variant_new_string (ptr);
+      {
+        GVariant *value;
+
+        value = g_variant_new_string (ptr);
+
+        if (value == NULL)
+          value = g_variant_new_string ("[Invalid UTF-8]");
+
+        return value;
+      }
 
     case 'o':
       return g_variant_new_object_path (ptr);