Re: Bug or incompatible change of byte-compile-file?

[Eli Zaretskii]

> Date: Wed, 16 Dec 2020 17:40:12 +0900 (JST)
> From: Yasuhiro KIMURA <yasu@utahime.org>
> 
> ----------------------------------------------------------------------
> if test "emacs" != "no"; then \
>   am__dir=. am__subdir_includes=''; \
>   case cannarpc.elc in */*) \
>     am__dir=`echo 'cannarpc.elc' | sed 's,/[^/]*$,,'`; \
>     am__subdir_includes="-L $am__dir -L ./$am__dir"; \
>   esac; \
>   test -d "$am__dir" || /usr/bin/mkdir -p "$am__dir" || exit 1; \
>   emacs --batch \
>     -q -no-site-file -no-init-file --eval="(setq load-path (append (list 
> (expand-file-name \"..\")) load-path))" --eval="(load \"docomp.el\")"  \
>     $am__subdir_includes -L . -L . \
>     --eval "(defun byte-compile-dest-file (f) \"cannarpc.elc\")" \
>     --eval "(unless (byte-compile-file \"cannarpc.el\") (kill-emacs 1))"; \
> else :; fi
> Loading c:/Users/yasu/Work/Emacs/master/tamago/docomp.el (source)...
> Package cl is deprecated
> Debugger entered--Lisp error: (wrong-type-argument stringp nil)
>   file-writable-p(nil)
>   byte-compile-file("cannarpc.el")
>   (if (byte-compile-file "cannarpc.el") nil (kill-emacs 1))
>   (unless (byte-compile-file "cannarpc.el") (kill-emacs 1))
>   eval((unless (byte-compile-file "cannarpc.el") (kill-emacs 1)) t)
>   command-line-1(("--eval=(setq load-path (append (list (expand-file-..." 
> "--eval=(load \"docomp.el\")" "-L" "." "-L" "." "--eval" "(defun 
> byte-compile-dest-file (f) \"cannarpc.elc\")" "--eval" "(unless 
> (byte-compile-file \"cannarpc.el\") (kill-em..."))
>   command-line()
>   normal-top-level()
> 
> make[2]: *** [Makefile:315: cannarpc.elc] Error 127
> make[2]: Leaving directory '/c/Users/yasu/Work/Emacs/master/tamago/egg'
> make[1]: *** [Makefile:489: all-recursive] Error 1
> make[1]: Leaving directory '/c/Users/yasu/Work/Emacs/master/tamago'
> make: *** [Makefile:361: all] Error 2
> ----------------------------------------------------------------------
> 
> Is this bug or incompatible change of byte-compile-file?

It's a bug.  Please report it using "M-x report-emacs-bug".