Re: Emacs:Native-Comp Backtrace

[T.V Raman]

thanks. Emacspeak (https://github.com/tvraman/emacspeak) should prove
a good test-bed re advice. Note that with-eval-after-load turns its
body into an anonymous lambda --- an din general, those may not be
worth native-compiling Andrea Corallo writes:
 > "T.V Raman" <raman@google.com> writes:
 > 
 > > "T.V Raman" <raman@google.com> writes:
 > >
 > > Here is some more info based on a work-around:
 > >
 > > Conjecture: native-comp has issues with with-eval-after-load and
 > > friends:
 > >
 > > The following setup produced the afore-mentioned error:
 > >
 > > 1. In the emacs startup, load dired-x when dired is loaded:
 > >    (with-eval-after-load "dired" (require 'dired-x))
 > >    2. dired-mode-hook contains dired-omit-mode defined in dired-x
 > > 3. During startup, a dired buffer is opened -- either via psession,
 > >    desktop or some other means
 > >
 > >    With the above, you get the error (symbol's function definition is
 > >    void: dired-omit-mode)
 > >
 > >    Fix: If in the startup file, you remove the with-eval-after-load and
 > >    simply require dired-x, then it works.
 > >
 > >    Additional info which lends credence to the conjecture:
 > >
 > >    Emacspeak loads module-specific code using eval-after-load e.g. when
 > >    "ido" is loaded, it loads emacspeak-ido after ido is done loading. In
 > >    native-comp emacs, I find that (featurep 'emacspeak-ido) is nil after
 > >    ido is loaded.
 > >
 > >    I suspect use-package may also  be affected in  a similar way.
 > 
 > Hi Raman
 > 
 > thanks for having a look.
 > 
 > This issue sounds strange but before looking into it I'd like to rework
 > the advicing primitive mechanism for the native code.
 > 
 > This is a source of incompatibility that may cause a number of the small
 > strange behaviours we still see today.  As a matter of fact today any
 > primitive that gets advised if is not listed in
 > `comp-never-optimize-functions' will misbehave with respect to the
 > vanilla implementation.
 > 
 > This should be the last non small area that need intervention and I'll
 > be on this very soon.
 > 
 >   Andrea
 > 
 > -- 
 > akrl@sdf.org

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