Use "cs/c" to be parallel to the source tree, because making them
different is asking for trouble (e.g., using `configure` without
a separate "build" directory goes wrong).
The rktio/parse.rkt grammar doesn't handle empty argument lists and
was choking on this line, before it even got to my new line adding
rktio_udp_set_receive_buffer.
Fix by following example of using `(void)` instead of `()`. Two notes:
- I forget which variation of C or C++ requires (void) instead of ().
- Strictly speaking, this commit isn't part of the theme of this PR.
If I squash the other commits down to one, maybe I should leave this
separate.
Make a call to a foreign function behave as in traditional Racket: the
arguments are considered reachable un their unwrapped forms until the
foreign function returns.
A missing `unwrap` caused references to structure constructors to be
treated as potentially non-primitive procedures, which significantly
slows down calls to the constructor.
Probably, this started going wrong at a point where original names
were more consistently associated to defined identifier.
Report source name when accessing a variable too early, and allow
multiple returns (based on continuation capture) for the right-hand
side of a `letrec`.
The repair directly implements `letrec` as needed in terms of `let`
and `set!`, instead of relying on Chez Scheme's `letrec`, unless
right-hand sides are simple enough. Implementing `letrec` that way
risks losing Chez Scheme optimizations, but schemify takes care
of many improvements already.
Get more of the benefit of traditional Racket's lazy bytecode
unmarshaling by using an explicit `fasl->s-exp` stap on the serialized
form of syntax objects. This approach also avoids generating pointless
machine code for constructing the serialized form, effectively using
`fasl->s-exp` as an interpreter. The result is significantly smaller
".zo" files for RacketCS and slightly faater load times.
+ overwrite any failed download attempts (after catching the exception &
retrying the download)
+ pause between download attempts
+ ensure that `(get-test-file)` always returns a file that exists
+ check whether downloaded file is empty
+ delete bad downloaded files
+ skip the test if download fails
