Repair pushed. The problem was related to the bytecode format, so I had to bump the version number.
Thanks! At Tue, 21 Jul 2015 13:27:14 -0400, Stephen Chang wrote: > The previous example now works. Thanks. > > But here is a variation that still seg faults: > > file1.rkt: > > #lang racket > (require (for-syntax syntax/parse)) > (provide (rename-out [my-define define])) > (define-syntax my-define > (syntax-parser > [(_ x:id e) > ;; undef is unbound identifier > #:with y (local-expand #'undef 'expression null) > #'(void)])) > > ; (my-define X 1) produces: "undef: unbound identifier in module in: undef" > > file2.rkt > > #lang racket > (require "file1.rkt") > (define X 1) > > Running file2.rkt in drracket with the new expander crashes drracket with: > > SIGSEGV MAPERR si_code 1 fault on addr 0x20 > Aborted > > On Mon, Jul 20, 2015 at 3:49 PM, Matthew Flatt <[email protected]> wrote: > > I've just pushed a repair for this bug. Thanks for the report! > > > > > > > >> On Jul 20, 2015, at 12:47 PM, Stephen Chang <[email protected]> wrote: > >> > >> The following code produces a seg fault with the new expander (today's > >> build) in the scenario described below: > >> > >> file1.rkt: > >> > >> #lang racket > >> (require (for-syntax syntax/parse)) > >> > >> (define-syntax (define-constructor stx) > >> (syntax-parse stx > >> [(_ X:id) > >> #'(define-syntax X > >> (syntax-parser > >> [(_ x (... ...)) #'(void x (... ...))]))])) > >> > >> (define-constructor C) > >> > >> (define-syntax define-alias > >> (syntax-parser > >> [(_ alias:id e) > >> #:with e+ (local-expand #'e 'expression null) > >> #'(define-syntax alias > >> (syntax-parser [x:id #'e+]))])) > >> > >> (define-alias D (C 1)) > >> > >> file2.rkt: > >> (require "file1.rkt") > >> > >> A few notes: > >> - running file2.rkt in DrRacket with the new expander crashes drracket > >> with the error: > >> > >> SIGSEGV MAPERR si_code 1 fault on addr (nil) > >> Aborted > >> > >> - running file2.rkt with racket (new expander) produces no error > >> - running file2.rkt produced no error with the old expander > >> - running file1.rkt with either racket or drracket, new expander or > >> old expander, produces no error > >> > >> I'm not completely caught up with the new expander threads so > >> apologies in advance if someone has already raised this issue. > >> > >> -- > >> You received this message because you are subscribed to the Google Groups > "Racket Developers" group. > >> To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > >> To post to this group, send email to [email protected]. > >> To view this discussion on the web visit > https://groups.google.com/d/msgid/racket-dev/CAFfiA1LDBwHox-1iP9UdDQOKSLMU-TbhU > Vtbsd-TLrNNO0eB_g%40mail.gmail.com. > >> For more options, visit https://groups.google.com/d/optout. > >> -- You received this message because you are subscribed to the Google Groups "Racket Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-dev/20150721193303.E24E16501DD%40mail-svr1.cs.utah.edu. For more options, visit https://groups.google.com/d/optout.
