[Bug 1516438] Re: Segfault when simulating removing all i386 packages

[Axel Beckert]

** Also affects: aptitude (Debian) via
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=801430
   Importance: Unknown
       Status: Unknown

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Title:
  Segfault when simulating removing all i386 packages

Status in aptitude package in Ubuntu:
  New
Status in aptitude package in Debian:
  Unknown

Bug description:
  I wanted to see what would happen if I removed all i386 packages (I am
  on amd64) so I ran

  aptitude -s remove '~ri386 ~i'

  I got a segfault.  I compiled aptitude with debug info and got this
  backtrace:

  #0  0x00007ffff5a518ef in _int_malloc (av=av at entry=0x7ffff5d94c00 <main_arena>, bytes=bytes at entry=48)
      at malloc.c:3326
  #1  0x00007ffff5a5450e in __GI___libc_malloc (bytes=48) at malloc.c:2895
  #2  0x00007ffff6347188 in operator new(unsigned long) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
  #3  0x00007ffff7b42177 in pkgDepCache::SetReInstall(pkgCache::PkgIterator const&, bool) ()
     from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.16
  #4  0x0000555555795974 in aptitudeDepCache::internal_mark_delete (this=0x555555daff30, Pkg=..., Purge=false, 
      unused_delete=true) at ../../../../src/generic/apt/aptcache.cc:1248

  There then follow hundreds more repetitions of internal_mark_delete.
  I am not sure if this is very deep recursion, or stack corruption, or
  what.

  I assume this is probably specific to the set of packages I have
  installed.  What is the best way for me to send the information that
  you need?

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: aptitude 0.7.3-1ubuntu1
  ProcVersionSignature: Ubuntu 4.2.0-18.22-generic 4.2.3
  Uname: Linux 4.2.0-18-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.19.1-0ubuntu4
  Architecture: amd64
  Date: Sun Nov 15 13:02:14 2015
  SourcePackage: aptitude
  UpgradeStatus: Upgraded to wily on 2015-11-15 (0 days ago)

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