[Bug libstdc++/55649] New: libstdcxx gdb python pretty printer for tr1 not working

[Bug libstdc++/55649] New: libstdcxx gdb python pretty printer for tr1 not working

[david.simmonds at igmarkets dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55649

             Bug #: 55649
           Summary: libstdcxx gdb python pretty printer for tr1 not
                    working
    Classification: Unclassified
           Product: gcc
           Version: 4.7.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: david.simmonds@igmarkets.com


The Tr1UnorderedMapPrinter pretty printer, and other tr1 pretty printers look
for variables starting with _M_, the actual variable names start with m_
For example, should be m_element_count rather than _M_element_count

[Bug libstdc++/55649] libstdcxx gdb python pretty printer for tr1 not working

[david.simmonds at igmarkets dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55649

--- Comment #1 from Dave Simmonds <david.simmonds at igmarkets dot com> 2012-12-11 16:19:09 UTC ---
(gdb) print g_epicmap->m_Map
$1 = Traceback (most recent call last):
  File "/usr/share/gdb/python/libstdcxx/v6/printers.py", line 536, in to_string
    return '%s with %d elements' % (self.typename,
self.val['_M_element_count'])
RuntimeError: There is no member or method named _M_element_count.
Traceback (most recent call last):
  File "/usr/share/gdb/python/libstdcxx/v6/printers.py", line 555, in children
    data = self.flatten (itertools.imap (self.format_one, Tr1HashtableIterator
(self.val)))
  File "/usr/share/gdb/python/libstdcxx/v6/printers.py", line 477, in __init__
    self.n_buckets = hash['_M_element_count']
RuntimeError: There is no member or method named _M_element_count.

(gdb) print /r g_epicmap->m_Map
$2 = {
  <std::tr1::hashtable<char const*, std::pair<char const* const,
boost::shared_ptr<CEpicRecord> >, std::allocator<std::pair<char const* const,
boost::shared_ptr<CEpicRecord> > >, Internal::extract1st<std::pair<char const*
const, boost::shared_ptr<CEpicRecord> > >, _ConstCharPtrCmp, _ConstCharHash,
Internal::mod_range_hashing, Internal::default_ranged_hash,
Internal::prime_rehash_policy, false, false, true>> = {
    <Internal::rehash_base<Internal::prime_rehash_policy,
std::tr1::hashtable<char const*, std::pair<char const* const,
boost::shared_ptr<CEpicRecord> >, std::allocator<std::pair<char const* const,
boost::shared_ptr<CEpicRecord> > >, Internal::extract1st<std::pair<char const*
const, boost::shared_ptr<CEpicRecord> > >, _ConstCharPtrCmp, _ConstCharHash,
Internal::mod_range_hashing, Internal::default_ranged_hash,
Internal::prime_rehash_policy, false, false, true> >> = {<No data fields>},
    <Internal::hash_code_base<char const*, std::pair<char const* const,
boost::shared_ptr<CEpicRecord> >, Internal::extract1st<std::pair<char const*
const, boost::shared_ptr<CEpicRecord> > >, _ConstCharPtrCmp, _ConstCharHash,
Internal::mod_range_hashing, Internal::default_ranged_hash, false>> = {
      m_extract = {<No data fields>},
      m_eq = {<No data fields>},
      m_h1 = {<No data fields>},
      m_h2 = {<No data fields>}
    },
    <Internal::map_base<char const*, std::pair<char const* const,
boost::shared_ptr<CEpicRecord> >, Internal::extract1st<std::pair<char const*
const, boost::shared_ptr<CEpicRecord> > >, true, std::tr1::hashtable<char
const*, std::pair<char const* const, boost::shared_ptr<CEpicRecord> >,
std::allocator<std::pair<char const* const, boost::shared_ptr<CEpicRecord> > >,
Internal::extract1st<std::pair<char const* const,
boost::shared_ptr<CEpicRecord> > >, _ConstCharPtrCmp, _ConstCharHash,
Internal::mod_range_hashing, Internal::default_ranged_hash,
Internal::prime_rehash_policy, false, false, true> >> = {<No data fields>},
    members of std::tr1::hashtable<char const*, std::pair<char const* const,
boost::shared_ptr<CEpicRecord> >, std::allocator<std::pair<char const* const,
boost::shared_ptr<CEpicRecord> > >, Internal::extract1st<std::pair<char const*
const, boost::shared_ptr<CEpicRecord> > >, _ConstCharPtrCmp, _ConstCharHash,
Internal::mod_range_hashing, Internal::default_ranged_hash,
Internal::prime_rehash_policy, false, false, true>:
    m_node_allocator = {
      <__gnu_cxx::new_allocator<Internal::hash_node<std::pair<char const*
const, boost::shared_ptr<CEpicRecord> >, false> >> = {<No data fields>}, <No
data fields>},
    m_buckets = 0x2aaaaaaac010,
    m_bucket_count = 92203,
    m_element_count = 69182,
    m_rehash_policy = {
      m_max_load_factor = 1,
      m_growth_factor = 2,
      m_next_resize = 92203
    }
  }, <No data fields>}

[Bug libstdc++/55649] libstdcxx gdb python pretty printer for tr1 not working

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55649

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-12-11 16:34:09 UTC ---
(In reply to comment #0)
> The Tr1UnorderedMapPrinter pretty printer, and other tr1 pretty printers look
> for variables starting with _M_, the actual variable names start with m_

No they don't:
http://gcc.gnu.org/viewcvs/trunk/libstdc%2B%2B-v3/include/tr1/unordered_map.h?view=markup

[Bug libstdc++/55649] libstdcxx gdb python pretty printer for tr1 not working

[david.simmonds at igmarkets dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55649

--- Comment #3 from Dave Simmonds <david.simmonds at igmarkets dot com> 2012-12-11 16:49:17 UTC ---
(In reply to comment #2)
> (In reply to comment #0)
> > The Tr1UnorderedMapPrinter pretty printer, and other tr1 pretty printers look
> > for variables starting with _M_, the actual variable names start with m_
> 
> No they don't:
> http://gcc.gnu.org/viewcvs/trunk/libstdc%2B%2B-v3/include/tr1/unordered_map.h?view=markup

Thanks for your reply, but the link isn't showing any variables with _M_ or
with m_, so doesn't help. Why do you say they don't? Certainly it's not working
for me as is, and if I create my own pretty printer with _M_ replaced by m_ it
works.

[Bug libstdc++/55649] libstdcxx gdb python pretty printer for tr1 not working

[david.simmonds at igmarkets dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55649

Dave Simmonds <david.simmonds at igmarkets dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED

--- Comment #4 from Dave Simmonds <david.simmonds at igmarkets dot com> 2012-12-11 16:56:19 UTC ---
(In reply to comment #3)
> (In reply to comment #2)
> > (In reply to comment #0)
> > > The Tr1UnorderedMapPrinter pretty printer, and other tr1 pretty printers look
> > > for variables starting with _M_, the actual variable names start with m_
> > 
> > No they don't:
> > http://gcc.gnu.org/viewcvs/trunk/libstdc%2B%2B-v3/include/tr1/unordered_map.h?view=markup
> 
> Thanks for your reply, but the link isn't showing any variables with _M_ or
> with m_, so doesn't help. Why do you say they don't? Certainly it's not working
> for me as is, and if I create my own pretty printer with _M_ replaced by m_ it
> works.

OK, I looked at the include file, I compiled against gcc 4.1.2, which has m_,
4.7.2 has _M_

Problem is that redhat el5 comes with gcc 4.1.2 and a pretty printer with _M_
which doesn't work togther

[Bug libstdc++/55649] libstdcxx gdb python pretty printer for tr1 not working

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55649

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|FIXED                       |INVALID

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-12-11 17:10:29 UTC ---
(In reply to comment #3)
> Thanks for your reply, but the link isn't showing any variables with _M_ or
> with m_, so doesn't help.

Sorry, I should have used
http://gcc.gnu.org/viewcvs/trunk/libstdc%2B%2B-v3/include/tr1/hashtable_policy.h?view=markup
or
http://gcc.gnu.org/viewcvs/trunk/libstdc%2B%2B-v3/include/tr1/hashtable.h?view=markup