There is a ChangeLog entry with no author in the current snapshot: Thu Nov 19 23:44:38 1998 * expr.c (STACK_BYTES): Delete unused macro. * calls.c: Provide default for PREFERRED_STACK_BOUNDARY. (STACK_BYTES): Use PREFERRED_STACK_BOUNDARY, not STACK_BOUNDARY. (expand_call): Likewise. (emit_library_call): Likewise. ... Toshi