Void pointer arithmatic
On lines 118, 191 & 203 of misc.c and line 675 in codebook.c in the Tremor package arithmetic operations are performed on void pointers which is illegal. GCC compiles without error because of undefined typecasting of the pointer before modification.
In my personal code I have strictly typecasted the pointer to (char *) though I am unfamiliar with this library so I have not submitted a patch.