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bug#47049: [feature/native] macro-expansion cycle when compiling comp.el
From: |
Stefan Monnier |
Subject: |
bug#47049: [feature/native] macro-expansion cycle when compiling comp.el |
Date: |
Thu, 11 Mar 2021 10:26:03 -0500 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
>> > I made some local modifications in comp.el, and used that modified
>> > comp.el for a while (by loading it manually at run time) to debug some
>> > problem. Then I undid those local modifications of comp.el (by saying
>> > "git checkout") and said "make" to rebuild Emacs. And I see this:
>> >
>> > ELC emacs-lisp/comp.elc
>> > Warning: Eager macro-expansion skipped due to cycle:
>> > => (load "comp.el") => (macroexpand-all (defalias
>> > 'comp-add-call-cstr )) => (macroexpand (comp-loop-insn-in-block )) =>
>> > (load "comp.el")
>> >
>> > Why does this happen?
>>
>> I'm not sure, but I can reproduce it.
>>
>> I guess (just a guess) it might be because `comp-add-call-cstr' is using
>> a macro `comp-loop-insn-in-block' that is expanding with a
>> `cl-symbol-macrolet' inside? (no idea why this should be a problem).
>>
>> > could it be that while comp.el was modified it
>> > got native-compiled, and now that inconsistent comp.eln gets in the
>> > way?
>>
>> I think this has not to do specifically with native compilation.
>>
>> I see it goes away removing '(setq load-prefer-newer t)' from the
>> invocation tho.
>>
>> Perhaps somebody already more into the macro expansion business might
>> have some suggestion.
>
> Stefan, can you help, please?
Nothing jumps at me by looking at the code. I'll have to look at the
actual complete stacktrace I think.
Stefan
- bug#47049: [feature/native] macro-expansion cycle when compiling comp.el, Eli Zaretskii, 2021/03/10
- bug#47049: [feature/native] macro-expansion cycle when compiling comp.el, Andrea Corallo, 2021/03/10
- bug#47049: [feature/native] macro-expansion cycle when compiling comp.el, Eli Zaretskii, 2021/03/10
- bug#47049: [feature/native] macro-expansion cycle when compiling comp.el,
Stefan Monnier <=
- bug#47049: [feature/native] macro-expansion cycle when compiling comp.el, Andrea Corallo, 2021/03/12
- bug#47049: [feature/native] macro-expansion cycle when compiling comp.el, Andrea Corallo, 2021/03/12
- bug#47049: [feature/native] macro-expansion cycle when compiling comp.el, Stefan Monnier, 2021/03/12
- bug#47049: [feature/native] macro-expansion cycle when compiling comp.el, Andrea Corallo, 2021/03/12
- bug#47049: [feature/native] macro-expansion cycle when compiling comp.el, Stefan Monnier, 2021/03/12
- bug#47049: [feature/native] macro-expansion cycle when compiling comp.el, Andrea Corallo, 2021/03/12
- bug#47049: [feature/native] macro-expansion cycle when compiling comp.el, Eli Zaretskii, 2021/03/13
bug#47049: [feature/native] macro-expansion cycle when compiling comp.el, Eli Zaretskii, 2021/03/12