Thanks! I think I have a repair, but I'm still testing before I push.

At Sat, 2 Jan 2016 17:31:36 -0500, Alex Knauth wrote:
> 
> > On Jan 2, 2016, at 4:20 PM, Alex Knauth <[email protected]> wrote:
> > 
> > You could try it by checking out my delay-light branch from 
> > https://github.com/AlexKnauth/racket/tree/delay-light
> > 
> > I get the error when compiling pkgs/racket-test/tests/racket/promise.rkt 
> where it uses `delay*`.
> 
> The branch where I switch it to use delayA is the delayA branch here:
> https://github.com/AlexKnauth/racket/tree/delayA
> With the switch to delayA 
> <https://github.com/AlexKnauth/racket/commit/57a636420bcdef266d5a65d8823924fdab
> 93897c> commit and the switch back to delay* 
> <https://github.com/AlexKnauth/racket/commit/65bc0a609154deb5d010bd333c1fd5958c
> de9687> commit.
> 
> >> On Jan 2, 2016, at 4:16 PM, Matthew Flatt <[email protected]> wrote:
> >> 
> >> That sounds like a bug. I fixed a bug with similar symptoms a few weeks
> >> ago, so maybe this one has a similar cause. How would I try it?
> >> 
> >> At Sat, 2 Jan 2016 15:41:44 -0500, Alex Knauth wrote:
> >>> Hello,
> >>> 
> >>> I've been getting a weird `link: module mismatch` error. Normally, those 
> kinds 
> >>> of errors go away when I delete a compiled/ directory or run raco setup. 
> This 
> >>> one stays even after I do that. 
> >>> 
> >>> But it gets even weirder. It  only  shows up when I use the identifier 
> >>> `delay*`, and not when I use the identifier `delayA`, for instance. (My 
> Dad 
> >>> suggested that) Since `*` is supposed to be a valid character in 
> identifiers, 
> >>> this seems like it should be a bug, unless I'm missing something.
> >>> 
> >>> Do any of you have an idea about what could cause this?
> >>> 
> >>> I'm providing `delay*` as lighter-weight a variant of `delay` in a pull 
> >>> request branch. It's originally defined as a macro `delay**`, and 
> >>> provided 
> >>> with a rename-out from that to `delay*`. Is it possible that the 
> rename-out is 
> >>> messing things up, combined with the star?
> >>> 
> >>> The full error message is this:
> >>> . ../../../../racket/collects/racket/promise.rkt:237:49: link: module 
> mismatch;
> >>> possibly, bytecode file needs re-compile because dependencies changed
> >>> importing module: 'promise
> >>> exporting module: 
> >>> 
> "/Users/Alex/Documents/GitHub/AlexKnauth/racket/racket/collects/racket/promise.
> >>> rkt"
> >>> exporting phase level: 0
> >>> internal explanation: variable not provided (directly or indirectly) in: 
> >>> delay*
> >>> 
> >>> Alex Knauth
> >>> 
> >>> 
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