Re: “Too many root sets” when calling compile frequently

[Jean Abou Samra <jean@abou-samra.fr>]

Le 19/08/2022 à 00:18, Jean Abou Samra a écrit :
> Calling the Guile compiler often causes this BDWGC error: “Too
> many root sets”.
>
> scheme@(guile-user)> (define-syntax-rule (repeat n expr expr* ...) (do 
> ((i 0 (1+ i))) ((eqv? i n)) expr expr* ...))
> scheme@(guile-user)> (use-modules (system base compile))
> scheme@(guile-user)> (repeat 10000 (compile 5))
> Too many root sets
> Abandon (core dumped)
>
> Any idea what is going on here? Should I report it as a bug?
> Is there a workaround?


Interestingly:

scheme@(guile-user)> (define-syntax-rule (repeat n expr expr* ...) (do 
((i 0 (1+ i))) ((eqv? i n)) expr expr* ...))
scheme@(guile-user)> (use-modules (system base compile))
scheme@(guile-user)> (repeat 10000 (compile 5 #:to 'bytecode))
scheme@(guile-user)> (use-modules (system vm loader))
scheme@(guile-user)> (repeat 10000 (load-thunk-from-memory (compile 5 
#:to 'bytecode)))
Too many root sets
Abandon (core dumped)


So the problem lies in the VM loading infrastructure. (This is
as far as I can investigate for now.)