r300: Add asserts to check for null pointer dereferences.

diff --git a/src/mesa/drivers/dri/r300/r300_vertprog.c b/src/mesa/drivers/dri/r300/r300_vertprog.c
index 6a366b4..cbe4cb8 100644 (file)
--- a/src/mesa/drivers/dri/r300/r300_vertprog.c
+++ b/src/mesa/drivers/dri/r300/r300_vertprog.c
@@ -79,6 +79,7 @@ static int r300VertexProgUpdateParams(GLcontext * ctx, struct r300_vertex_progra
                        break;
                }
 
+               assert(src);
                dst[4*i] = src[0];
                dst[4*i + 1] = src[1];
                dst[4*i + 2] = src[2];
@@ -311,6 +312,7 @@ struct r300_vertex_program * r300SelectAndTranslateVertexShader(GLcontext *ctx)
                r300SelectAndTranslateFragmentShader(ctx);
        }
 
+       assert(r300->selected_fp);
        wanted_key.FpReads = r300->selected_fp->InputsRead;
        wanted_key.FogAttr = r300->selected_fp->fog_attr;
        wanted_key.WPosAttr = r300->selected_fp->wpos_attr;