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From: Yuta Yamada <sleepboy.zzz@gmail.com>
To: 23495@debbugs.gnu.org
Subject: bug#23495: byte-compile-file return t when there is "XXX can't use lexical var" error
Date: Mon, 09 May 2016 01:12:43 -0700 (PDT)	[thread overview]
Message-ID: <20160509.011243.271129867897113450.sleepboy.zzz@gmail.com> (raw)

Hello, emacs developers.

I found a weird behavior related to byte compile.

In following code named foo.el, `byte-compile-file' return t even
though there is an error message in compile log buffer.
(The `t' means the compilation was no errors, according to the function's
description.)

---- code ----
;; -*- lexical-binding: t; -*-
(defun foo ()
  (let* ((a nil))
    (add-to-list 'a "foo")))

(provide 'foo)
---- code end ----

In *Compile-Log* buffer, I got:

---- log ----
Compiling /home/uta/local/vcs/github.com/yuutayamada/emacs.d/elisp/self/hoge/foo.el...

In foo:
foo.el:6:13:Error: `add-to-list' can't use lexical var `a'; use `push' or
    `cl-pushnew'
---- log end ----

But actually `byte-compile-file' return `t'.
(I also tried "emacs -Q -batch -f batch-byte-compile ./foo.el", but
I got status code 0 after executing the command.)


I updated emacs (master branch) today.


I'm using cask for testing elisp files, which uses
`byte-recompile-file' function to build .el files, but this
byte compiler error can not detect due to the return value.


Thanks

Yuta





             reply	other threads:[~2016-05-09  8:12 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-09  8:12 Yuta Yamada [this message]
2016-05-10 18:23 ` bug#23495: byte-compile-file return t when there is "XXX can't use lexical var" error Michael Heerdegen
2016-05-10 23:45   ` Yuta Yamada
2016-05-11  0:29     ` Michael Heerdegen
2016-05-11 11:57       ` Michael Heerdegen
2016-05-11 14:33         ` Yuta Yamada
2016-05-11 16:25           ` Michael Heerdegen

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