diff -urN jasper-1.900.1/src/libjasper/jpc/jpc_dec.c jasper-1.900.1-fix/src/libjasper/jpc/jpc_dec.c

--- jasper-1.900.1/src/libjasper/jpc/jpc_dec.c	2007-01-19 14:43:07.000000000 -0700

+++ jasper-1.900.1-fix/src/libjasper/jpc/jpc_dec.c	2008-03-06 16:51:12.000000000 -0700

@@ -1069,12 +1069,12 @@

 	/* Apply an inverse intercomponent transform if necessary. */

 	switch (tile->cp->mctid) {

 	case JPC_MCT_RCT:

-		assert(dec->numcomps == 3);

+		assert(dec->numcomps >= 3);

 		jpc_irct(tile->tcomps[0].data, tile->tcomps[1].data,

 		  tile->tcomps[2].data);

 		break;

 	case JPC_MCT_ICT:

-		assert(dec->numcomps == 3);

+		assert(dec->numcomps >= 3);

 		jpc_iict(tile->tcomps[0].data, tile->tcomps[1].data,

 		  tile->tcomps[2].data);

 		break;