[Pkg-emacsen-addons] Bug#917050: Hangs infinitely when compiling for emacs 1:26.1+1-2

[Axel Beckert]

Package: elpa-markdown-mode
Version: 2.3+154-1
Severity: serious

Hi,

when upgrading emacs from 1:25.2+1-11 to 1:26.1+1-2, it hangs
infinitely at "install/markdown-mode-2.3snapshot154: byte-compiling
for emacs".

Relevant parts of an "ps auxwwwf" output:

root     20406  0.0  0.0   2388   764 pts/18   S+   Dec21   0:00              \_ /bin/sh /var/lib/dpkg/info/emacs-gtk.postinst configure 1:25.2+1-11
root     20409  0.0  0.0  18984 11432 pts/18   S+   Dec21   0:00                  \_ /usr/bin/perl -w /usr/lib/emacsen-common/emacs-install emacs
root     20682  0.0  0.0      0     0 pts/18   Z+   Dec21   0:00                      \_ [emacs-install] <defunct>
root     20820  0.0  0.0   2388   764 pts/18   S+   Dec21   0:00                      \_ /bin/sh /usr/lib/emacsen-common/packages/install/elpa-markdown-mode emacs
root     20823  0.0  0.0   2388   100 pts/18   S+   Dec21   0:00                          \_ /bin/sh /usr/lib/emacsen-common/packages/install/elpa-markdown-mode emacs
root     20824 99.9  0.0 274260 41400 pts/18   Rl+  Dec21 526:43                              \_ emacs -q -batch -l package --eval (add-to-list 'package-directory-list "/usr/share/emacs/site-lisp/elpa-src") -f package-initialize -f batch-byte-compile markdown-mode-autoloads.el markdown-mode-pkg.el markdown-mode.el

Please note 526 minutes (!) CPU time of process 20824.

Please feel free to reassign this to emacs in case you think this is
an issue with emacs 26.1 itself and not with this elpa package.

-- System Information:
Debian Release: buster/sid
  APT prefers unstable
  APT policy: (990, 'unstable'), (600, 'testing'), (500, 'unstable-debug'), (500, 'buildd-unstable'), (110, 'experimental'), (1, 'experimental-debug'), (1, 'buildd-experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 4.18.0-3-amd64 (SMP w/8 CPU cores)
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE=C.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)
LSM: AppArmor: enabled

Versions of packages elpa-markdown-mode depends on:
iu  emacs                1:26.1+1-2
iu  emacs-gtk [emacsen]  1:26.1+1-2
ii  emacsen-common       3.0.4

elpa-markdown-mode recommends no packages.

elpa-markdown-mode suggests no packages.

-- no debconf information