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From: Andrea Corallo <akrl@sdf.org>
To: Sebastian Sturm <mail@sebastian-sturm.de>
Cc: 42088@debbugs.gnu.org, Stefan Monnier <monnier@iro.umontreal.ca>
Subject: bug#42088: [feature/native-comp] Lockup on opening TypeScript files
Date: Sun, 28 Jun 2020 10:43:22 +0000	[thread overview]
Message-ID: <xjfk0zrsc6t.fsf@sdf.org> (raw)
In-Reply-To: <xjfzh8oryjd.fsf@sdf.org> (Andrea Corallo's message of "Sat, 27 Jun 2020 21:25:58 +0000")

Okay after some digging I think I've an idea of what is going on:

the code was hanging in `typescript--ensure-cache' in the loop

(cl-loop while (re-search-forward typescript--quick-match-re-func nil t)...

This because typescript--quick-match-re-func is not set correctly going
back and back this is because `typescript--available-frameworks' is set
to nil.

IIUC the reason for that is: cl-macs is expanding cl-loop using various
`--cl-var--', these looks the same but each of this is a separete
uninterned symbol.  The native compiler squash them all toghether having
to pass them through the reader and a simple testcase like this fails to
behave as expected.

===
(require 'cl-lib)

(defun foo ()
  (cl-loop for xxx in '(a b)
           for yyy = xxx
           do (print xxx)))
===

This fails only compiling for dynamic scope because in lexical all
--cl-vars-- are absorbed as slots in the execution stack.

I suspect the solution is to have some renaming performed by the native
compiler not to confuse them.

  Andrea

--
akrl@sdf.org





  reply	other threads:[~2020-06-28 10:43 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-27 16:55 bug#42088: [feature/native-comp] Lockup on opening TypeScript files Sebastian Sturm
2020-06-27 21:25 ` Andrea Corallo
2020-06-28 10:43   ` Andrea Corallo [this message]
2020-06-28 20:38     ` Andrea Corallo
2020-06-30  2:33     ` Stefan Monnier
2020-06-30  8:06       ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2020-06-30 14:03         ` Stefan Monnier
2020-06-30 14:43           ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2020-06-29 21:01 ` Sebastian Sturm

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