🚀 go-pugleaf

>It's not a bug - it's due to Sequent's C compiler being derived from
>AT&T's C compiler, which does not accept '$' as a valid character in an
>identifier.  Sequent is trying to be compatible with AT&T, so we have
>no plans to change this in the near future.

Berkeley's compiler is derived from AT&T's C compiler, but it accepts
"$" as a valid character in an identifier.  I don't see the harm in
extending Sequent's compiler; Sequent's C library presumably contains
"lstat()", but AT&T's doesn't (yet, anyway - S5R4 will).

>(It's invalid in ANSI C too.)

But specifically called out in A6.5.2 as a "common extension"; you may
have to provide a flag to disable it in order to have your compiler be a
legal ANSI C one, but you don't have to leave it out of your compiler
entirely.

Nevertheless, it's wise to avoid "$" in identifiers when writing code
for UNIX systems, since not all compilers support it.