--- mesa-7.0-git-2007-10-01/src/mesa/swrast_setup/ss_tritmp.h.claudio 2007-09-29 15:01:47.000000000 -0300 +++ mesa-7.0-git-2007-10-01/src/mesa/swrast_setup/ss_tritmp.h 2007-10-01 13:39:58.000000000 -0300 @@ -198,6 +198,8 @@ static void TAG(quadfunc)( GLcontext *ct { if (IND & SS_UNFILLED_BIT) { struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; + if (!VB->EdgeFlag) + return; GLubyte ef1 = VB->EdgeFlag[v1]; GLubyte ef3 = VB->EdgeFlag[v3]; VB->EdgeFlag[v1] = 0;