On Thu, 2003-10-09 at 10:42, Carlo Wood wrote: > I want to add a new operand to the CALL_EXPR. > In order to do so, I increased the number in tree.def: > > DEFTREECODE (CALL_EXPR, "call_expr", 'e', 3) // was 2 before > You also need to adjust the memory allocation functions. See make_node. Diego.