* lisp/emacs-lisp/macroexp.el: Break cycle with bytecomp/byte-opt

The recent change in macroexp triggered a cyclic dependency error
during eager macroexpansion when neither `bytecomp` nor `byte-opt` had
been byte-compiled yet.  This fixes it by moving the offending
function to macroexp.el.

* lisp/emacs-lisp/macroexp.el (macroexp--unfold-lambda): Move from
byte-opt.el and rename.
(macroexp--expand-all): Use it.

* lisp/emacs-lisp/byte-opt.el (byte-compile-unfold-lambda): Move to
macroexp.el.
(byte-compile-inline-expand, byte-optimize-form-code-walker):
* lisp/emacs-lisp/bytecomp.el (byte-compile-form):
Use `macroexp--unfold-lambda` instead.
This commit is contained in:
Stefan Monnier 2021-02-09 12:02:25 -05:00
parent 3c53d28ae1
commit 04fb1664a8
3 changed files with 68 additions and 78 deletions

View file

@ -195,7 +195,6 @@ otherwise adds \".elc\"."
(autoload 'byte-optimize-form "byte-opt")
;; This is the entry point to the lapcode optimizer pass2.
(autoload 'byte-optimize-lapcode "byte-opt")
(autoload 'byte-compile-unfold-lambda "byte-opt")
;; This is the entry point to the decompiler, which is used by the
;; disassembler. The disassembler just requires 'byte-compile, but
@ -3277,7 +3276,7 @@ for symbols generated by the byte compiler itself."
((and (eq (car-safe (car form)) 'lambda)
;; if the form comes out the same way it went in, that's
;; because it was malformed, and we couldn't unfold it.
(not (eq form (setq form (byte-compile-unfold-lambda form)))))
(not (eq form (setq form (macroexp--unfold-lambda form)))))
(byte-compile-form form byte-compile--for-effect)
(setq byte-compile--for-effect nil))
((byte-compile-normal-call form)))