check glLoadProgramNV len < 0 (bug 6679)

diff --git a/src/mesa/shader/nvprogram.c b/src/mesa/shader/nvprogram.c
index fadb5be2ade5641b261cb1b22bda9f5314740ef3..a485a1733f7df48a7812666105fb8fa21f8441a3 100644 (file)
--- a/src/mesa/shader/nvprogram.c
+++ b/src/mesa/shader/nvprogram.c
@@ -1,8 +1,8 @@
 /*
  * Mesa 3-D graphics library
- * Version:  6.1
+ * Version:  6.5.1
  *
- * Copyright (C) 1999-2004  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -515,6 +515,11 @@ _mesa_LoadProgramNV(GLenum target, GLuint id, GLsizei len,
       return;
    }
 
+   if (len < 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glLoadProgramNV(len)");
+      return;
+   }
+
    FLUSH_VERTICES(ctx, _NEW_PROGRAM);
 
    prog = (struct program *) _mesa_HashLookup(ctx->Shared->Programs, id);