Package: aptitude
Version: 0.8.1-1
Severity: normal

If I press "!" in aptitude's TUI and there's no conflict to solve,
aptitude segfaults.

This can happen if you e.g. accidentially press "!" twice in a row
instead of only once to solve a conflict.

Backtrace:

#0  imm::set<std::pair<aptitude_resolver_package, 
generic_choice<aptitude_universe> >, 
imm::key_compare<aptitude_resolver_package, generic_choice<aptitude_universe>, 
aptitude::util::compare3_f<aptitude_resolver_package> >, imm::nil_t, 
imm::nil_t, 4>::const_iterator::const_iterator (root=..., this=0x7fffffffc7e0)
    at ../../src/generic/util/immset.h:592
#1  imm::set<std::pair<aptitude_resolver_package, 
generic_choice<aptitude_universe> >, 
imm::key_compare<aptitude_resolver_package, generic_choice<aptitude_universe>, 
aptitude::util::compare3_f<aptitude_resolver_package> >, imm::nil_t, 
imm::nil_t, 4>::begin (this=<optimized out>)
    at ../../src/generic/util/immset.h:1061
#2  imm::map<aptitude_resolver_package, generic_choice<aptitude_universe>, 
aptitude::util::compare3_f<aptitude_resolver_package>, imm::nil_t, 
imm::nil_t>::begin (this=<optimized out>) at 
../../src/generic/util/immset.h:1272
#3  generic_choice_set<aptitude_universe>::begin (this=<optimized out>) at 
../../src/generic/problemresolver/choice_set.h:310
#4  0x000055555578b358 in resolver_manager::approve_all_broken_deps 
(this=0x555556d987d0) at ../../../../src/generic/apt/resolver_manager.cc:1606
#5  0x000055555567adf6 in do_apply_solution () at ../../src/ui.cc:2332
#6  0x00007ffff71d6338 in sigc::slot0<void>::operator() (this=0x555555cd4d48) 
at /usr/include/sigc++-2.0/sigc++/functors/slot.h:440
#7  cwidget::widgets::widget::handle_key (this=this@entry=0x555555cd3bb0, 
k=...) at widget.cc:242
#8  0x00007ffff71ad406 in cwidget::widgets::passthrough::handle_key 
(this=0x555555cd3bb0, k=...) at passthrough.cc:98
#9  0x00007ffff71d9ab3 in cwidget::widgets::widget::dispatch_key 
(this=0x555555cd3bb0, k=...) at widget.cc:267
#10 0x00007ffff718e1f1 in cwidget::widgets::menubar::handle_key 
(this=0x555555cc09b0, k=...) at menubar.cc:641
#11 0x00007ffff71d9ab3 in cwidget::widgets::widget::dispatch_key 
(this=0x555555cc09b0, k=...) at widget.cc:267
#12 0x00007ffff715bdc9 in 
cwidget::toplevel::input_thread::get_input_event::dispatch 
(this=0x7fffe00008c0) at toplevel.cc:400
#13 0x00007ffff71536b5 in cwidget::toplevel::mainloop (synch=synch@entry=0) at 
toplevel.cc:1171
#14 0x000055555568c64a in ui_main () at ../../src/ui.cc:3075
#15 0x00005555555b50e0 in main (argc=<optimized out>, argv=<optimized out>) at 
../../src/main.cc:1398

-- Package-specific info:
Terminal: eterm-color
$DISPLAY is set.
which aptitude: /usr/bin/aptitude

aptitude version information:
aptitude 0.8.1
Compiler: g++ 5.3.1 20160429
Compiled against:
  apt version 5.0.0
  NCurses version 6.0
  libsigc++ version: 2.8.0
  Gtk+ support disabled.
  Qt support disabled.

Current library versions:
  NCurses version: ncurses 6.0.20160319
  cwidget version: 0.5.17
  Apt version: 5.0.0

aptitude linkage:
        linux-vdso.so.1 (0x00007fff7e9f3000)
        libgtk3-nocsd.so.0 => /usr/lib/x86_64-linux-gnu/libgtk3-nocsd.so.0 
(0x00007fa2df774000)
        libapt-pkg.so.5.0 => /usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0 
(0x00007fa2df3fc000)
        libncursesw.so.5 => /lib/x86_64-linux-gnu/libncursesw.so.5 
(0x00007fa2df1cb000)
        libtinfo.so.5 => /lib/x86_64-linux-gnu/libtinfo.so.5 
(0x00007fa2defa1000)
        libsigc-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libsigc-2.0.so.0 
(0x00007fa2ded9a000)
        libcwidget.so.3 => /usr/lib/x86_64-linux-gnu/libcwidget.so.3 
(0x00007fa2dea9c000)
        libsqlite3.so.0 => /usr/lib/x86_64-linux-gnu/libsqlite3.so.0 
(0x00007fa2de7a2000)
        libboost_iostreams.so.1.58.0 => 
/usr/lib/x86_64-linux-gnu/libboost_iostreams.so.1.58.0 (0x00007fa2de588000)
        libboost_filesystem.so.1.58.0 => 
/usr/lib/x86_64-linux-gnu/libboost_filesystem.so.1.58.0 (0x00007fa2de36e000)
        libboost_system.so.1.58.0 => 
/usr/lib/x86_64-linux-gnu/libboost_system.so.1.58.0 (0x00007fa2de16a000)
        libxapian.so.22 => /usr/lib/x86_64-linux-gnu/libxapian.so.22 
(0x00007fa2ddd66000)
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 
(0x00007fa2ddb48000)
        libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 
(0x00007fa2dd7c8000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fa2dd4ca000)
        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 
(0x00007fa2dd2b3000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fa2dcf0f000)
        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fa2dcd0b000)
        libutil.so.1 => /lib/x86_64-linux-gnu/libutil.so.1 (0x00007fa2dcb07000)
        libresolv.so.2 => /lib/x86_64-linux-gnu/libresolv.so.2 
(0x00007fa2dc8f0000)
        libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007fa2dc6d5000)
        libbz2.so.1.0 => /lib/x86_64-linux-gnu/libbz2.so.1.0 
(0x00007fa2dc4c4000)
        liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007fa2dc2a1000)
        liblz4.so.1 => /usr/lib/x86_64-linux-gnu/liblz4.so.1 
(0x00007fa2dc08f000)
        librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007fa2dbe86000)
        libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007fa2dbc81000)
        /lib64/ld-linux-x86-64.so.2 (0x000055fc0f635000)
-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (990, 'unstable'), (980, 'unstable-debug'), (600, 'testing'), 
(111, 'buildd-unstable'), (111, 'buildd-experimental'), (110, 'experimental'), 
(105, 'experimental-debug')
Architecture: amd64 (x86_64)

Kernel: Linux 4.5.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages aptitude depends on:
ii  aptitude-common            0.8.1-1
ii  libapt-pkg5.0              1.2.11
ii  libboost-filesystem1.58.0  1.58.0+dfsg-5+b1
ii  libboost-iostreams1.58.0   1.58.0+dfsg-5+b1
ii  libboost-system1.58.0      1.58.0+dfsg-5+b1
ii  libc6                      2.22-7
ii  libcwidget3v5              0.5.17-4+b1
ii  libgcc1                    1:6.1.1-1
ii  libncursesw5               6.0+20160319-1
ii  libsigc++-2.0-0v5          2.8.0-1
ii  libsqlite3-0               3.12.2-1
ii  libstdc++6                 6.1.1-1
ii  libtinfo5                  6.0+20160319-1
ii  libxapian22v5              1.2.23-1

Versions of packages aptitude recommends:
ii  libparse-debianchangelog-perl  1.2.0-8
ii  sensible-utils                 0.0.9

Versions of packages aptitude suggests:
ii  apt-xapian-index                0.47+nmu2
ii  aptitude-doc-en [aptitude-doc]  0.8.1-1
ii  debtags                         2.1
ii  tasksel                         3.34

-- no debconf information

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