From bb8f7627f7be71044a2e4cb5d583b8e2d59baab1 Mon Sep 17 00:00:00 2001
From: Brian <brian@yutani.localnet.net>
Date: Tue, 19 Dec 2006 08:59:36 -0700
Subject: [PATCH] additional error checking

---
 src/mesa/shader/slang/slang_link2.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/mesa/shader/slang/slang_link2.c b/src/mesa/shader/slang/slang_link2.c
index c170b3e053f..425ad7a87c1 100644
--- a/src/mesa/shader/slang/slang_link2.c
+++ b/src/mesa/shader/slang/slang_link2.c
@@ -318,6 +318,13 @@ _slang_link2(GLcontext *ctx,
       return;
    }
 
+   if (!vertProg->Base.Varying || !fragProg->Base.Varying) {
+      /* temporary */
+      _mesa_problem(ctx, "vertex/fragment program lacks varying list!");
+      linked->LinkStatus = GL_FALSE;
+      return;
+   }  
+
    /*
     * Make copies of the vertex/fragment programs now since we'll be
     * changing src/dst registers after merging the uniforms and varying vars.
-- 
2.30.2