bug#68083: 30.0.50; Intermittent build failure with native compilation

[Eli Zaretskii]

> From: Aaron Jensen <aaronjensen@gmail.com>
> Date: Thu, 28 Dec 2023 09:05:25 -0500
> 
> 
> On macOS, I am often getting this when building Emacs from scratch. Could 
> this be a race condition with a parallel build?
> 
> I bisected and the problematic commit is: 
> e670412a3e101e70dc26e021f467faece8cb7f6b
> 
> In toplevel form:
> org/org-element.el:64:2: Error: Eager macro-expansion failure: 
> (native-compiler-error (lambda (arg322 &optional arg323) (let ((f 
> #'macroexpand)) (funcall f arg322 arg323))) "Compiling 
> /private/var/tmp/emacs-plusA30-20231227-
> 10652-1cz0rs/.brew_home/.emacs.d/eln-cache/30.0.50-69afc345/subr--trampoline-6d6163726f657870616e64_macroexpand_0.eln...
> File already exists: 
> /private/var/tmp/emacs-plusA30-20231227-10652-1cz0rs/.brew_home/.emacs.d/eln-cache/30.0.50-69afc345/subr--trampoline-6d6163726f657870616e64_macroexpand_0.eln
> 
> Error: file-already-exists (\"File already exists\" 
> \"/private/var/tmp/emacs-plusA30-20231227-10652-1cz0rs/.brew_home/.emacs.d/eln-cache/30.0.50-69afc345/subr--trampoline-6d6163726f657870616e64_macroexpand_0.eln\")
>   mapbacktrace(#f(compiled-function (evald func args flags) #<bytecode 
> -0x1fcb3a734512f81>))
>   debug-early-backtrace()
>   debug-early(error (file-already-exists \"File already exists\" 
> \"/private/var/tmp/emacs-plusA30-20231227-10652-1cz0rs/.brew_home/.emacs.d/eln-cache/30.0.50-69afc345/subr--trampoline-6d6163726f657870616e64_macroexpand_0.eln
> \"))
>   
> rename-file(\"/private/var/tmp/emacs-plusA30-20231227-10652-1cz0rs/.brew_home/.emacs.d/eln-cache/30.0.50-69afc345/subr--trampoline-6d6163726f657870616e64_macroexpand_08i0tl8.eln.tmp\"
>  \"/private/var/tmp/emacs-plusA30-20231
> 227-10652-1cz0rs/.brew_home/.emacs.d/eln-cache/30.0.50-69afc345/subr--trampoline-6d6163726f657870616e64_macroexpand_0.eln\")
>   
> comp-delete-or-replace-file(\"/private/var/tmp/emacs-plusA30-20231227-10652-1cz0rs/.brew_home/.emacs.d/eln-cache/30.0.50-69afc345/subr--trampoline-6d6163726f657870616e64_macroexpand_0.eln\"
>  \"/private/var/tmp/emacs-plusA30
> -20231227-10652-1cz0rs/.brew_home/.emacs.d/eln-cache/30.0.50-69afc345/subr--trampoline-6d6163726f657870616e64_macroexpand_08i0tl8.eln.tmp\")
>   
> comp--compile-ctxt-to-file(\"/private/var/tmp/emacs-plusA30-20231227-10652-1cz0rs/.brew_home/.emacs.d/eln-cache/30.0.50-69afc345/subr--trampoline-6d6163726f657870616e64_macroexpand_0.eln\")
>   
> comp-compile-ctxt-to-file(\"/private/var/tmp/emacs-plusA30-20231227-10652-1cz0rs/.brew_home/.emacs.d/eln-cache/30.0.50-69afc345/subr--trampoline-6d6163726f657870616e64_macroexpand_0.eln\")
>   comp-final1()
>   
> load-with-code-conversion(\"/private/var/tmp/emacs-int-comp-subr--trampoline-6d6163726f657870616e64_macroexpand_0-haajZW.el\"
>  
> \"/private/var/tmp/emacs-int-comp-subr--trampoline-6d6163726f657870616e64_macroexpand_0-haajZW.e
> l\" nil t)
>   command-line-1((\"-l\" 
> \"/private/var/tmp/emacs-int-comp-subr--trampoline-6d6163726f657870616e64_macroexpand_0-haajZW.el\"))
>   command-line()
>   normal-top-level()
> ")
> gmake[3]: *** [Makefile:330: org/org-element.elc] Error 1

Thanks.  Adding Andrea to the discussion.