Hi! On Tue, Jun 21, 2022 at 09:44:42AM -0500, Nathan Lynch wrote: > Not a problem to fix in your series, but I guess these should be > parenthesized i.e. > > #define H_P7 (-60) > #define H_P8 (-61) > #define H_P9 (-62) > #define H_NOOP (-63) Why? It does not change the semantics of any correct code. For what incorrect code will it make the diagnostics clearer? Segher