bug#13188: par-map causes VM stack overflow

[Ludovic Courtès]

Hi,

Nala Ginrut <address@hidden> skribis:

> scheme@(guile-user)> (par-map 1+ (iota 10000))
> While executing meta-command:
> ERROR: Throw to key `vm-error' with args `(vm-run "VM: Stack
> overflow" ())'.

Commit 8a177d3 fixes this.  I added a paragraph in the documentation
that explains what happens: delimited continuations to the rescue once
again!  ;-)

Comments welcome.

Ludo’.