* Update syntax/readerr documentation to match code.
This change simply updates the documentation to match the contract that's actually enforced on `raise-read-eof-error` and `raise-read-error`.
Fixes#1837.
* Fix additional typo noticed by @bennn
Repairs a problem reported by Laurent Orseau, where running the
following program with errotrace enabled reports an error:
#lang racket/base
(require racket/class)
(new object%)
(define-namespace-anchor nsa)
(define ns (namespace-anchor->namespace nsa))
(eval '(new object%) ns)
I haven't been able to make a standalone test, yet, but I'll keep
trying.
Since `get-info/full` may return a function that is undefined
for the symbol 'scribblings, pass a failure thunk.
The function can be undefined for 'scribblings if:
1. Install a package with a `scribblings` in its info.rkt
2. Remove `scribblings` from the info file
3. Run `raco setup`
The current example fails to illustrate the complete use, as the final evaluation of `apple` would succeed even without the `namespace-attach-module` call. This updated example demonstrates that `namespace-require` is still needed after the module is attached, and also shows how the behavior differs from `namespace-attach-module-declaration`.
Normally, it's impossible to generate lots of `eq?`-hashing
collisions, but when the compiler inlines a function, it can duplicate
variables in a way that gives each copy the same `eq?` hash code. The
immutable-hash tree implementation failed when more than 32 collisions
occurred (which triggers a subtree in the collision node).
It's similarly very difficult to generate > 32 values that collide on
`eqv?` hashes but are not `eqv?` (although it must be possible using
exact rationals or complex numbers).
On my machine, this reduces the running time of the sqlite3
tests by about 1/4 (~3.2s to ~2.4s).
Other things I tried that didn't make as big a difference:
- coalesce A regions
- fast path for call-with-lock
Note: quasisyntax has a bug: #`(... (1 2 #,@(list 3) 4)).
Within an escape, no way to express splicing desugaring.
So add a private variant of ?@ that is interpreted even escaped.
Make datum->syntax explicit in guide rather than combined with
constructors like t-cons/x and t-dots (conditional).
This will make datum support easier, later.
For now, it makes it easier to do relocate correctly.
Also, make t-metafun, h-splice inlinable.
