Subject: 26.0.91; Crash in minibuffer prompt

From: Juri Linkov <[email-masked]>
Date: Tue, 13 Mar 2018 00:06:52 +0200

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and the GNU bug tracker at debbugs.gnu.org.  Please check that
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Please write in English if possible, as the Emacs maintainers
usually do not have translators for other languages.

Please describe exactly what actions triggered the bug, and
the precise symptoms of the bug.  If you can, give a recipe
starting from 'emacs -Q':

1. Eval:

(custom-set-variables
 '(enable-recursive-minibuffers t)
 '(minibuffer-depth-indicate-mode t)
 '(visual-order-cursor-movement t))

2. Type:

M-x M-x <left> <left> <left> <left> <left>

If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    'bt full' and 'xbacktrace'.

(gdb) xbacktrace
"move-point-visually" (0xffffb4d0)
"left-char" (0xffffb730)
"funcall-interactively" (0xffffb728)
"call-interactively" (0xffffb930)
"command-execute" (0xffffbb38)
"read-from-minibuffer" (0xffffbf90)
"completing-read-default" (0xffffc158)
"completing-read" (0xffffc2b0)
"read-extended-command" (0xffffc488)
"byte-code" (0xffffc5d0)
"call-interactively" (0xffffc820)
"command-execute" (0xffffca28)
"read-from-minibuffer" (0xffffce80)
"completing-read-default" (0xffffd048)
"completing-read" (0xffffd1a0)
"read-extended-command" (0xffffd378)
"byte-code" (0xffffd4c0)
"call-interactively" (0xffffd710)
"command-execute" (0xffffd918)

In GNU Emacs 26.0.91 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.10.8)