Re: [MIT-Scheme-devel] Edwin cannot run `M-x shell' on Mac OS 10.8

[Chris Hanson]

FWIW, the the build I'm using works fine on 10.8.  Hopefully we'll get
that released soon.

On Sat, Jun 22, 2013 at 3:18 PM, Taylor R Campbell <address@hidden> wrote:
>    Date: Sat, 22 Jun 2013 17:03:15 -0400
>    From: Rich Loveland <address@hidden>
>
>    Do you mean a Scheme stack trace? I'm not sure how to get one. No
>    error was signalled in the controlling terminal, nor did the debugger
>    pop up in the terminal or in Edwin -- just the error message in an
>    Edwin window.
>
> M-x set-variable RET debug-on-internal-error RET #t RET
>
>    I did grab some dtruss output from running Edwin and doing `M-x shell'
>    again; this is the only error I found (longer version is attached):
>
> That's not the error in question -- look for fcntl(..., F_SETFL, ...),
> or the numeric value from <sys/fcntl.h> instead of F_SETFL.  It looks
> like this is probably the failure:
>
> fcntl(0x5, 0x4, 0x6)             = -1 Err#25
>
> But I don't see the creation of file descriptor 5, unless the trace
> got out of order.
>
> (We should stop using sigprocmask so much...  The dstack abstraction
> is handy, but it can be done more safely with less overhead, and
> without so thoroughly cluttering system call traces.)
>
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