parse-launch: don't read past end of string if last character is an escape char

When the last character of a property value is a backslash
the unescaping code reads one byte pass the end of the string.

https://bugzilla.gnome.org/show_bug.cgi?id=639674

diff --git a/gst/parse/types.h b/gst/parse/types.h
index e938b94..7e8b994 100644 (file)
--- a/gst/parse/types.h
+++ b/gst/parse/types.h
@@ -75,8 +75,12 @@ gst_parse_unescape (gchar *str)
   walk = str;
 
   while (*walk) {
-    if (*walk == '\\')
+    if (*walk == '\\') {
       walk++;
+      /* make sure we don't read beyond the end of the string */
+      if (*walk == '\0')
+        break;
+    }
     *str = *walk;
     str++;
     walk++;