GNU bug report logs - #31072
27.0.50; Assertion failure in defvar

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Package: emacs;

Reported by: Philipp <p.stephani2 <at> gmail.com>

Date: Fri, 6 Apr 2018 01:25:02 UTC

Severity: minor

Found in version 27.0.50

Done: Paul Eggert <eggert <at> cs.ucla.edu>

Bug is archived. No further changes may be made.

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From: Philipp Stephani <p.stephani2 <at> gmail.com>
To: 31072 <at> debbugs.gnu.org
Subject: bug#31072: 27.0.50; Assertion failure in defvar
Date: Fri, 06 Apr 2018 15:57:40 +0000

[Message part 1 (text/plain, inline)]
Philipp <p.stephani2 <at> gmail.com> schrieb am Fr., 6. Apr. 2018 um 03:25 Uhr:

>
> Loading the following file triggers an assertion failure:
>
> ;;; -*- lexical-binding: t; -*-
> (defvar 1)
>
> $ emacs -Q -batch -l /tmp/crash.el
> eval.c:772: Emacs fatal error: assertion failed: SYMBOLP (sym)
> Fatal error 6: Abort trapAbort trap: 6
>
> This is because Fdefvar lacks a CHECK_SYMBOL in the second branch
> (lexical binding but only one argument)
>

Here is a patch.

[Message part 2 (text/html, inline)]
[0001-Avoid-undefined-behavior-in-defvar-Bug-31072.txt (text/plain, attachment)]
This bug report was last modified 7 years and 38 days ago.

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