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[Erich Eickmeyer <erich@xxxxxxxxxxxxxxxxxx>]

** Changed in: csound (Ubuntu)
       Status: Fix Committed => In Progress

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https://bugs.launchpad.net/bugs/1754944

Title:
  Crash in csladspa when starting ardour

Status in Ardour:
  Fix Released
Status in csound package in Ubuntu:
  In Progress

Bug description:
  Using Ubuntu 17.10, csladspa 1:6.09.1~dfsg-2 and ardour 5.12.

  On starting ardour:

  Thread 1 (Thread 0x7ffff7f8b8c0 (LWP 9037)):
  #0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
  #1  0x00007fffed074f5d in __GI_abort () at abort.c:90
  #2  0x00007fffed0bd28d in __libc_message (action=action@entry=do_abort, 
      fmt=fmt@entry=0x7fffed1e4528 "*** Error in `%s': %s: 0x%s ***\n")
      at ../sysdeps/posix/libc_fatal.c:181
  #3  0x00007fffed0c464a in malloc_printerr (action=<optimised out>, 
      str=0x7fffed1e0eae "free(): invalid pointer", ptr=<optimised out>, 
      ar_ptr=<optimised out>) at malloc.c:5426
  #4  0x00007fffed0c673e in _int_free (av=0x7fffed416c20 <main_arena>, 
      p=<optimised out>, have_lock=0) at malloc.c:4175
  #5  0x00007fffed0cb44e in __GI___libc_free (mem=<optimised out>)
      at malloc.c:3145
  #6  0x00007fffc51bf400 in ?? () from /usr/lib/ladspa/csladspa.so
  #7  0x00007fffc51bf622 in ladspa_descriptor () from /usr/lib/ladspa/csladspa.so
  #8  0x00007ffff70ef39b in ARDOUR::PluginManager::ladspa_discover(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >) ()
     from /opt/Ardour-5.12.0/lib/libardour.so.3
  #9  0x00007ffff70f02d7 in ARDOUR::PluginManager::ladspa_refresh() ()
     from /opt/Ardour-5.12.0/lib/libardour.so.3
  #10 0x00007ffff70f0a52 in ARDOUR::PluginManager::refresh(bool) ()
     from /opt/Ardour-5.12.0/lib/libardour.so.3

  The only workaround for now is to uninstall csladspa.

  Related ardour bug report: http://tracker.ardour.org/view.php?id=7502

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