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* bug#26486: 25.1.91; spurious warnings from cconv.el
@ 2017-04-13 18:59 John Williams
  2017-04-13 19:28 ` Noam Postavsky
  0 siblings, 1 reply; 8+ messages in thread
From: John Williams @ 2017-04-13 18:59 UTC (permalink / raw)
  To: 26486

When I byte compile a file where a macro expansion introduces an unused
lexical veriable, I get warnings from cconv.el, even if I wrap the
expansion in (with-no-warnings) and set byte-compile-warnings to nil.
IMHO warnings of this type should never be issued for code that comes
from a macro expansion, but it should at least be possible to suppress
them with the usual mechanisms.  Here's a file that demonstrates the
problem when it's compiled with byte-compile-file:

========================================================================
;; -*- lexical-binding: t; byte-compile-warnings: nil  -*-

(defmacro test ()
  `(let (unused)))

(with-no-warnings
  (test))
========================================================================



In GNU Emacs 25.1.91.1 (x86_64-pc-linux-gnu, GTK+ Version 3.10.8),
modified by Debian
Windowing system distributor 'The X.Org Foundation', version 11.0.11803000
System Description:     Ubuntu 14.04.5 LTS

Configured using:
 'configure --build x86_64-linux-gnu --build x86_64-linux-gnu
 --prefix=/usr --sharedstatedir=/var/lib --libexecdir=/usr/lib
 --localstatedir=/var/lib --infodir=/usr/share/info
 --mandir=/usr/share/man --with-pop=yes
 --enable-locallisppath=/etc/google-emacs:/etc/emacs:/usr/local/share/emacs/25.1.91+gg1+2/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/25.1.91+gg1+2/site-lisp:/usr/share/emacs/site-lisp
 --with-crt-dir=/usr/lib/x86_64-linux-gnu --disable-build-details
 --disable-silent-rules --with-modules GOOGLE_VERSION=25.1.91+gg1+2
 --with-x=yes --with-x-toolkit=gtk3 --with-toolkit-scroll-bars
 build_alias=x86_64-linux-gnu 'CFLAGS=-g -O2 -fstack-protector
 --param=ssp-buffer-size=4 -Wformat -Werror=format-security -Wall'
 'LDFLAGS=-Wl,-Bsymbolic-functions -Wl,-z,relro
 -Wl,-fuse-ld=gold,--export-dynamic-symbol=__google_auxv'
 'CPPFLAGS=-D_FORTIFY_SOURCE=2 -DGOOGLE_EMACS_DEFINE_AUXV''

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Important settings:
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  value of $XMODIFIERS: @im=ibus
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Major mode: Emacs-Lisp

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Recent messages:
nil
Mark set
nil
Quit
Type "q" in help window to restore its previous buffer.
Undo! [22 times]
Saving file /usr/local/google/home/jrw/homedir/test.el...
Wrote /usr/local/google/home/jrw/homedir/test.el
Compiling /usr/local/google/home/jrw/homedir/test.el...done
Wrote /usr/local/google/home/jrw/homedir/test.elc
Quit

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Memory information:
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 (heap 1024 30017 1036))





^ permalink raw reply	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2021-07-06 20:04 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2017-04-13 18:59 bug#26486: 25.1.91; spurious warnings from cconv.el John Williams
2017-04-13 19:28 ` Noam Postavsky
2021-07-05 15:17   ` bug#26486: 25.1.91; unused var warning from cconv.el can't be suppressed Lars Ingebrigtsen
2021-07-05 15:29     ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-07-06 14:48       ` Lars Ingebrigtsen
2021-07-06 19:53     ` Basil L. Contovounesios
2021-07-06 20:03       ` Lars Ingebrigtsen
2021-07-06 20:04         ` Lars Ingebrigtsen

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