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[Martin Pecka <peci1@xxxxxxxxx>]

I confirm this on current 14.04 LTS release.

However, I no longer have problems regarding bug #1256419, so it seems
the printers.py file syntax has already been updated in upstream.

So just commenting out the two lines Simon Suggests solves the issue for
me (however, I'm not doing any multiarch releases, so I don't know what
is broken by this fix).

** Changed in: gcc-4.8 (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1446828

Title:
  gdb pretty printers do not auto-load on Trusty

Status in gcc-4.8 package in Ubuntu:
  Confirmed

Bug description:
  On Ubuntu 14.04.2 (Trusty), the file in libstdc++6-4.8-dbg to auto-
  load the pretty printers doesn't resolve the right path to the
  printers. To reproduce, on a fresh install:

  $ cat test.cpp
  #include <vector>
  int main() {
    std::vector<int> v;
    v.push_back(1);
    return 0;
  }
  $ g++ test.cpp -g
  $ gdb a.out -ex start
  Reading symbols from a.out...done.
  Temporary breakpoint 1 at 0x400956: file test.cpp, line 3.
  Starting program: /home/emaisin/a.out 
  Traceback (most recent call last):
    File "/usr/lib/debug/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.19-gdb.py", line 63, in <module>
      from libstdcxx.v6.printers import register_libstdcxx_printers
  ImportError: No module named 'libstdcxx'

  Temporary breakpoint 1, main () at test.cpp:3
  3	  std::vector<int> v;
  (gdb) 

  It seems like the fixup for multiarch actually adds an extra "..":

      if not os.path.basename(os.path.dirname(__file__)).startswith('lib'):
          backdirs += 1 # multiarch subdir

  Removing these two lines almost makes it work:

  $ gdb a.out -ex start
  Reading symbols from a.out...done.
  Temporary breakpoint 1 at 0x400956: file test.cpp, line 3.
  Starting program: /home/emaisin/a.out 
  Traceback (most recent call last):
    File "/usr/lib/debug/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.19-gdb.py", line 63, in <module>
      from libstdcxx.v6.printers import register_libstdcxx_printers
    File "/usr/lib/x86_64-linux-gnu/../../share/gcc-4.8/python/libstdcxx/v6/printers.py", line 54
      raise ValueError, "Cannot find type %s::%s" % (str(orig), name)
                      ^
  SyntaxError: invalid syntax

  Temporary breakpoint 1, main () at test.cpp:3
  3	  std::vector<int> v;

  
  That last problem is tracked in bug #1256419, which is still a pending issue in Trusty.

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