[pkg-gnupg-maint] Bug#850946: pinentry-curses: does not quit on Ctrl-C (SIGINT), still grabs keys, takes 100% CPU time

[Vincent Lefevre]

Package: pinentry-curses
Version: 1.0.0-1
Severity: important

When I use

pinentry-program /usr/bin/pinentry-curses

in ~/.gnupg/gpg-agent.conf and I do:

$ gpg -d file.gpg

I get:

            ┌──────────────────────────────────────────────────────┐
            │ Enter passphrase                                     │
            │                                                      │
            │                                                      │
            │ Passphrase: ________________________________________ │
            │                                                      │
            │       <OK>                              <Cancel>     │
            └──────────────────────────────────────────────────────┘

Then if I type Ctrl-C, I get back to the shell, but pinentry-curses
is still running and grab keys, making the terminal and the shell
unusable: some keys go to the shell (I've tried with both bash and
zsh), other keys go to pinentry-curses, randomly. If I quit the
terminal, then pinentry-curses takes 100% CPU time until I manually
kill it.

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'stable-updates'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 4.8.0-2-amd64 (SMP w/8 CPU cores)
Locale: LANG=POSIX, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages pinentry-curses depends on:
ii  libassuan0     2.4.3-2
ii  libc6          2.24-8
ii  libgpg-error0  1.26-1
ii  libncursesw5   6.0+20161126-1
ii  libtinfo5      6.0+20161126-1

pinentry-curses recommends no packages.

Versions of packages pinentry-curses suggests:
pn  pinentry-doc  <none>

-- no debconf information