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-rw-r--r--src/mesa/tnl/t_imm_fixup.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/src/mesa/tnl/t_imm_fixup.c b/src/mesa/tnl/t_imm_fixup.c
index 1c3cf2861c5..8bf0982a848 100644
--- a/src/mesa/tnl/t_imm_fixup.c
+++ b/src/mesa/tnl/t_imm_fixup.c
@@ -1,4 +1,4 @@
-/* $Id: t_imm_fixup.c,v 1.13 2001/04/30 21:08:52 keithw Exp $ */
+/* $Id: t_imm_fixup.c,v 1.14 2001/05/03 16:11:16 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -631,7 +631,9 @@ void _tnl_fixup_compiled_cassette( GLcontext *ctx, struct immediate *IM )
if (tnl->ExecParity)
IM->Primitive[IM->CopyStart] |= PRIM_PARITY;
-
+ /* one of these should be true, else we'll be in an infinite loop */
+ assert(IM->PrimitiveLength[IM->Start] > 0 ||
+ IM->Flag[IM->Start] & (VERT_END|VERT_END_VB));
for (i = IM->Start ; i <= IM->Count ; i += IM->PrimitiveLength[i])
if (IM->Flag[i] & (VERT_END|VERT_END_VB)) {
IM->PrimitiveLength[IM->CopyStart] = i - IM->CopyStart;