[Bug libstdc++/53477] New: pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[Bug libstdc++/53477] New: pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[pluto at agmk dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

             Bug #: 53477
           Summary: pretty printer fails with: Python Exception <type
                    'exceptions.IndexError'> list index out of range
    Classification: Unclassified
           Product: gcc
           Version: 4.7.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: pluto@agmk.net


Created attachment 27490
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27490
testcase

$ x86_64-gnu-linux-g++ t.cpp -Wall -o t -g2 -gdwarf-4
$ cgdb ./t

in line 15 pretty printer fails with error.

 7│ int main()
 8│ {
 9│         icapSelection_[ /* frame */ 7 ][ /* word */ 3 ].insert( 5 );
10│         icapSelection_[ /* frame */ 7 ][ /* word */ 3 ].insert( 1 );
11│         for ( IcapSelection::const_iterator i = icapSelection_.begin(); i
!= icapSelection_.end(); ++i )
12│         {
13│                 IcapSelection::key_type frame( i->first );
14│                 IcapSelection::mapped_type const& wordBitsetMap( i->second
);
15├───────────────> for ( IcapSelection::mapped_type::const_iterator j =
wordBitsetMap.begin(); j != wordBitsetMap.end(); ++j )
16│                 {
17│                         IcapSelection::mapped_type::key_type word( j->first
);
18│                         IcapSelection::mapped_type::mapped_type const&
bits( j->second );
19│                         for (
IcapSelection::mapped_type::mapped_type::const_iterator k = bits.begin(); k !=
bits.end(); ++k )
20│                         {
21│                                 unsigned bit( *k );
22│                         }
23│                 }
24│         }
25│ }
/home/users/pawels/dvm.git/t.cpp

Breakpoint 1, main () at t.cpp:9
(gdb) n
(gdb)
(gdb) p icapSelection_
$1 = std::map with 1 elements = {
  [7] = std::map with 1 elements = {
    [3] = std::set with 2 elements = {
      [0] = 1,
      [1] = 5
    }
  }
}
(gdb) n
(gdb)
(gdb)
(gdb) p wordBitsetMap
$2 = Python Exception <type 'exceptions.IndexError'> list index out of range:
std::map with 1 elements

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[tromey at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

Tom Tromey <tromey at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |3.1.x/3.2.x

--- Comment #1 from Tom Tromey <tromey at gcc dot gnu.org> 2012-07-13 18:38:18 UTC ---
(Fixed the component)

I can't reproduce this.
I can print wordMapBitset before it is initialized but
I get a different error:

(gdb) p wordBitsetMap
$4 = std::map with 140737488349518 elementsCannot access memory at address
0x68732f6c61636f7c

... which isn't pretty but is at least vaguely understandable
as "GIGO".

What version of gdb are you using?
Can you do it with stack-printing enabled?
("set python print-stack on" in recent versions, somewhere under
"maint" in older ones.)
This might help.

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.1.x/3.2.x                 |---

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[pluto at agmk dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

--- Comment #2 from Pawel Sikora <pluto at agmk dot net> 2012-07-16 19:03:27 UTC ---
(In reply to comment #1)
> (Fixed the component)
> 
> I can't reproduce this.
> I can print wordMapBitset before it is initialized but
> I get a different error:
> 
> (gdb) p wordBitsetMap
> $4 = std::map with 140737488349518 elementsCannot access memory at address
> 0x68732f6c61636f7c

in line 15 the wordBitsetMap reference is initialized.

(gdb) p wordBitsetMap
$3 = Python Exception <type 'exceptions.IndexError'> list index out of range:
std::map with 1 elements
         ^^^^^^^^^^^^^^^ this is true.

> What version of gdb are you using?

gdb from git 7.4/master branch.

> Can you do it with stack-printing enabled?
> ("set python print-stack on" in recent versions, somewhere under
> "maint" in older ones.)
> This might help.

(gdb) set python print-stack full
(gdb) p wordBitsetMap
$6 = std::map with 1 elementsTraceback (most recent call last):
  File "/opt/gcc47/share/gcc-4.7.2/python/libstdcxx/v6/printers.py", line 427,
in children
    rep_type = find_type(self.val.type, '_Rep_type')
  File "/opt/gcc47/share/gcc-4.7.2/python/libstdcxx/v6/printers.py", line 43,
in find_type
    field = typ.fields()[0]
IndexError: list index out of range

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[asmwarrior at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

asmwarrior <asmwarrior at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |asmwarrior at gmail dot com

--- Comment #3 from asmwarrior <asmwarrior at gmail dot com> ---
I have the same error when try to print a stl container, see the log: (this
happens when I debug Code::Blocks), I'm using GCC 4.6.3 and GDB CVS HEAD.

[debug]> p m_Headers
[debug]Python Exception <type 'exceptions.IndexError'> list index out of range: 
[debug]$2 = std::set with 1 elements
[debug]>>>>>>cb_gdb:

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[asmwarrior at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

--- Comment #4 from asmwarrior <asmwarrior at gmail dot com> ---
This is what I get when I enable the python stack print:

> set python print-stack full

[debug]> set python print-stack full
[debug]>>>>>>cb_gdb:

> p m_Headers

[debug]> p m_Headers
[debug]Traceback (most recent call last):
[debug]  File "E:\code\gcc\PCXMinGW463\bin\libstdcxx\v6\printers.py", line 477,
in children
[debug]    rep_type = find_type(self.val.type, '_Rep_type')
[debug]  File "E:\code\gcc\PCXMinGW463\bin\libstdcxx\v6\printers.py", line 52,
in find_type
[debug]    field = typ.fields()[0]
[debug]IndexError: list index out of range
[debug]$3 = std::set with 1 elements
[debug]>>>>>>cb_gdb:

Thanks.

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[asmwarrior at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

--- Comment #5 from asmwarrior <asmwarrior at gmail dot com> ---
> p /r m_Headers

[debug]> p /r m_Headers
[debug]$5 = (StringSet &) @0x116d0bc4: {_M_t = {_M_impl =
{<std::allocator<std::_Rb_tree_node<wxString> >> =
{<__gnu_cxx::new_allocator<std::_Rb_tree_node<wxString> >> = {<No data
fields>}, <No data fields>}, _M_key_compare = {<std::binary_function<wxString,
wxString, bool>> = {<No data fields>}, <No data fields>}, _M_header = {_M_color
= std::_S_red, _M_parent = 0x116d2d28, _M_left = 0x116d2d28, _M_right =
0x116d2d28}, _M_node_count = 1}}}
[debug]>>>>>>cb_gdb:

When I see the E:\code\gcc\PCXMinGW463\bin\libstdcxx\v6\printers.py, I see in
the line: 476
    def children (self):
        rep_type = find_type(self.val.type, '_Rep_type')
        node = find_type(rep_type, '_Link_type')
        node = node.strip_typedefs()
        return self._iter (RbtreeIterator (self.val), node)

The variable is declared as:  StringSet&              m_Headers;
and the StringSet is defined as: typedef std::set<wxString>  StringSet;

Hope those information can help to solve this bug.

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[asmwarrior at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

--- Comment #6 from asmwarrior <asmwarrior at gmail dot com> ---
Hi, all, I create a simple c++ program to reproduce this bug:

#include <set>
#include <map>
typedef std::set<int>  IntSet;
typedef std::map<int, IntSet> IntToSetMap;

int main()
{
    IntToSetMap m;
    IntSet s;
    s.insert(5);
    m[3] = s;
    IntSet& refSet = m[3];
    refSet.insert(6);
    return 0;
}

Now, you can set a BP in the line "refSet.insert(6);", and run the command "p
refSet", you will get the error message.

Python Exception <type 'exceptions.IndexError'> list index out of range: 
$1 = std::set with 1 elements

If you run "n", and then type "p refSet" again, you get:
Python Exception <type 'exceptions.IndexError'> list index out of range: 
$2 = std::set with 2 elements

It looks like the elements number(from 1 to 2) is correct.
Thanks

Yuanhui Zhang

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[asmwarrior at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

--- Comment #7 from asmwarrior <asmwarrior at gmail dot com> ---
Ok, I found another issue on the line "return 0", see the GDB log:

[debug]> p m
[debug]$2 = std::map with 1 elements = {[3] = std::set with 2 elements = {[0] =
5, [1] = 6}}
[debug]>>>>>>cb_gdb:
[debug]> p m[3]
[debug]Attempt to take address of value not located in memory.
[debug]>>>>>>cb_gdb:

"p m" shows the correct value, but I'm not sure why "p m[3]" failed? Is it a
GDB bug?

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[tomga at wp dot pl]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

Tomasz Gajewski <tomga at wp dot pl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tomga at wp dot pl

--- Comment #8 from Tomasz Gajewski <tomga at wp dot pl> ---
The testcase can be reduced to:

#include <map>

typedef std::map<int, int> IntToIntMap;

int main()
{
  IntToIntMap amap;
  IntToIntMap & mapref = amap;
  amap[1] = 1;
  return 0;
}

and the problem is with map references. Executing on line with 'amap[1] = 1;'
commands to print 'amap' and 'mapref' I get:

(gdb) set python print-stack full
(gdb) p mapref
Traceback (most recent call last):
  File "/home/tomga/devel/gdb-scripts/python/libstdcxx/v6/printers.py", line
438, in children
    rep_type = find_type(self.val.type, '_Rep_type')
  File "/home/tomga/devel/gdb-scripts/python/libstdcxx/v6/printers.py", line
52, in find_type
    field = typ.fields()[0]
IndexError: list index out of range
$3 = std::map with 0 elements
(gdb) p amap
$4 = std::map with 0 elements

I get this with:

$ g++ --version
g++ (Ubuntu/Linaro 4.7.3-1ubuntu1) 4.7.3
...
$ gdb --version
GNU gdb (GDB) 7.5.91.20130417-cvs-ubuntu
...

Pretty printers from svn://gcc.gnu.org/svn/gcc/trunk/libstdc++-v3/python
(currently latest revision: 200105.

Currently I don't know how to debug this further.

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[tomga at wp dot pl]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

--- Comment #9 from Tomasz Gajewski <tomga at wp dot pl> ---
Following patch seems to solve this problem although I don't like it very much.
I think whole get_basic_type function should be moved to the beginning of
printers.py.

And additionally I'm not sure if this change does not break something somewhere
else. If not I think get_basic_type and find_type should be merged into one
function. If not calls to them should be replaced appappropriately. I leave it
to someone else.


Index: libstdcxx/v6/printers.py
===================================================================
--- libstdcxx/v6/printers.py    (revision 200105)
+++ libstdcxx/v6/printers.py    (working copy)
@@ -39,7 +39,7 @@
 # handles searching upward through superclasses.  This is needed to
 # work around http://sourceware.org/bugzilla/show_bug.cgi?id=13615.
 def find_type(orig, name):
-    typ = orig.strip_typedefs()
+    typ = Printer.get_basic_type(orig)
     while True:
         search = str(typ) + '::' + name
         try:

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[tomga at wp dot pl]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

--- Comment #11 from Tomasz Gajewski <tomga at wp dot pl> ---
Created attachment 30474
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30474&action=edit
Patch that fixes all testcases added by me in previous patch to simple.cc

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[pmuldoon at redhat dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

Phil Muldoon <pmuldoon at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pmuldoon at redhat dot com

--- Comment #12 from Phil Muldoon <pmuldoon at redhat dot com> ---
I checked in a patch to fix this yesterday.  Not sure why the bug did not
auto-update.  Here is the link to the patch:

http://gcc.gnu.org/ml/gcc-cvs/2013-08/msg00497.html

Author: pmuldoon
Date: Tue Aug 20 19:20:42 2013
New Revision: 201888

URL: http://gcc.gnu.org/viewcvs?rev=201888&root=gcc&view=rev
Log:
2013-08-20  Phil Muldoon  <pmuldoon@redhat.com>

    PR libstdc++/53477
    http://sourceware.org/bugzilla/show_bug.cgi?id=15195

    * python/libstdcxx/v6/printers.py (Printer.__call__): If a value
    is a reference, fetch referenced value.
    (RxPrinter.invoke): Ditto.
    * testsuite/libstdc++-prettyprinters/cxx11.cc (main): Add -O0
    flag. Add referenced value tests.


Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/python/libstdcxx/v6/printers.py
    trunk/libstdc++-v3/testsuite/libstdc++-prettyprinters/cxx11.cc

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

--- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Phil Muldoon from comment #12)
> I checked in a patch to fix this yesterday.  Not sure why the bug did not
> auto-update.

Unfortunately after the sourceware.org hardware upgrade the script to update
bugzilla from commits was lost or disabled, and noone's restored it.  Thanks
for adding the commit details manually, most of us don't bother because it adds
a step to the process and is quite tedious when you're making lots of commits.

Is this RESOLVED now then?

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[pmuldoon at redhat dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

--- Comment #14 from Phil Muldoon <pmuldoon at redhat dot com> ---
It should be fixed for all cases in the PR.  I think we can close it, and if
any of the people commenting on this bug have issues, they can reopen it.

My pmuldoon@redhat.com account does not have sufficient privileges to alter the
state of the bug, or the assignee. (Though I did not try with my gcc.gnu.org
account)

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[mpolacek at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mpolacek at gcc dot gnu.org

--- Comment #15 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
With your gcc.gnu.org account it should work.

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[pluto at agmk dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

Pawel Sikora <pluto at agmk dot net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|                            |4.9.0

--- Comment #16 from Pawel Sikora <pluto at agmk dot net> ---
(In reply to Phil Muldoon from comment #14)
> It should be fixed for all cases in the PR.  I think we can close it, and if
> any of the people commenting on this bug have issues, they can reopen it.
> 
> My pmuldoon@redhat.com account does not have sufficient privileges to alter
> the state of the bug, or the assignee. (Though I did not try with my
> gcc.gnu.org account)


i still see a failure:

(gdb) p wordBitsetMap
$1 = Python Exception <type 'exceptions.ValueError'> Cannot find type const
std::map<unsigned int, std::map<unsigned int, std::set<unsigned int,
std::__7::les
s<unsigned int>, std::__7::allocator<unsigned int> >, std::__7::less<unsigned
int>, std::__7::allocator<std::__7::pair<unsigned int const, std::set<unsigned
i
nt, std::__7::less<unsigned int>, std::__7::allocator<unsigned int> > > > >,
std::__7::less<unsigned int>, std::__7::allocator<std::__7::pair<unsigned int
con
st, std::map<unsigned int, std::set<unsigned int, std::__7::less<unsigned int>,
std::__7::allocator<unsigned int> >, std::__7::less<unsigned int>, std::__7::a
llocator<std::__7::pair<unsigned int const, std::set<unsigned int,
std::__7::less<unsigned int>, std::__7::allocator<unsigned int> > > > > > >
>::mapped_type:
:_Rep_type:
std::map with 1 elements


previously it failed with:

(gdb) p wordBitsetMap
$1 = Python Exception <type 'exceptions.IndexError'> list index out of range:
std::map with 1 elements

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[pluto at agmk dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

--- Comment #17 from Pawel Sikora <pluto at agmk dot net> ---
pure gcc 4.9.0 20140106 still fails:


Breakpoint 2, main () at pr53477.cpp:15
(gdb) p wordBitsetMap
$1 = std::map with 1 elementsTraceback (most recent call last):
  File "/home/pawels/gcc/4.9/share/gcc-4.9.0/python/libstdcxx/v6/printers.py",
line 438, in children
    rep_type = find_type(self.val.type, '_Rep_type')
  File "/home/pawels/gcc/4.9/share/gcc-4.9.0/python/libstdcxx/v6/printers.py",
line 54, in find_type
    raise ValueError, "Cannot find type %s::%s" % (str(orig), name)
ValueError: Cannot find type const std::map<unsigned int, std::map<unsigned
int, std::set<unsigned int, std::__7::less<unsigned int>,
std::__7::allocator<unsigned int> >, std:
:__7::less<unsigned int>, std::__7::allocator<std::__7::pair<unsigned int
const, std::set<unsigned int, std::__7::less<unsigned int>,
std::__7::allocator<unsigned int> > > > >
, std::__7::less<unsigned int>, std::__7::allocator<std::__7::pair<unsigned int
const, std::map<unsigned int, std::set<unsigned int, std::__7::less<unsigned
int>, std::__7::al
locator<unsigned int> >, std::__7::less<unsigned int>,
std::__7::allocator<std::__7::pair<unsigned int const, std::set<unsigned int,
std::__7::less<unsigned int>, std::__7::al
locator<unsigned int> > > > > > > >::mapped_type::_Rep_type



patch propses in comment #10 works for me:

Breakpoint 2, main () at pr53477.cpp:15
(gdb) p wordBitsetMap
$1 = std::map with 1 elements = {
  [3] = std::set with 2 elements = {
    [0] = 1,
    [1] = 5
  }
}

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[jiyouguo at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

JiYouguo <jiyouguo at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jiyouguo at gmail dot com

--- Comment #18 from JiYouguo <jiyouguo at gmail dot com> ---

(In reply to Pawel Sikora from comment #17)
Would you mind telling how to patch a bug? I just can't find the file
simple.cc.
> pure gcc 4.9.0 20140106 still fails:
> 
> 
> Breakpoint 2, main () at pr53477.cpp:15
> (gdb) p wordBitsetMap
> $1 = std::map with 1 elementsTraceback (most recent call last):
>   File
> "/home/pawels/gcc/4.9/share/gcc-4.9.0/python/libstdcxx/v6/printers.py", line
> 438, in children
>     rep_type = find_type(self.val.type, '_Rep_type')
>   File
> "/home/pawels/gcc/4.9/share/gcc-4.9.0/python/libstdcxx/v6/printers.py", line
> 54, in find_type
>     raise ValueError, "Cannot find type %s::%s" % (str(orig), name)
> ValueError: Cannot find type const std::map<unsigned int, std::map<unsigned
> int, std::set<unsigned int, std::__7::less<unsigned int>,
> std::__7::allocator<unsigned int> >, std:
> :__7::less<unsigned int>, std::__7::allocator<std::__7::pair<unsigned int
> const, std::set<unsigned int, std::__7::less<unsigned int>,
> std::__7::allocator<unsigned int> > > > >
> , std::__7::less<unsigned int>, std::__7::allocator<std::__7::pair<unsigned
> int const, std::map<unsigned int, std::set<unsigned int,
> std::__7::less<unsigned int>, std::__7::al
> locator<unsigned int> >, std::__7::less<unsigned int>,
> std::__7::allocator<std::__7::pair<unsigned int const, std::set<unsigned
> int, std::__7::less<unsigned int>, std::__7::al
> locator<unsigned int> > > > > > > >::mapped_type::_Rep_type
> 
> 
> 
> patch propses in comment #10 works for me:
> 
> Breakpoint 2, main () at pr53477.cpp:15
> (gdb) p wordBitsetMap
> $1 = std::map with 1 elements = {
>   [3] = std::set with 2 elements = {
>     [0] = 1,
>     [1] = 5
>   }
> }

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

--- Comment #19 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to JiYouguo from comment #18)
> Would you mind telling how to patch a bug? I just can't find the file
> simple.cc.

simple.cc is a test file, patching that won't fix anything. The patch you want
is probably comment 11

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[jiyouguo at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

--- Comment #20 from JiYouguo <jiyouguo at gmail dot com> ---
Got it. Thank you very much.
:)


2014-05-06 17:11 GMT+08:00 redi at gcc dot gnu.org <gcc-bugzilla@gcc.gnu.org
>:

> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477
>
> --- Comment #19 from Jonathan Wakely <redi at gcc dot gnu.org> ---
> (In reply to JiYouguo from comment #18)
> > Would you mind telling how to patch a bug? I just can't find the file
> > simple.cc.
>
> simple.cc is a test file, patching that won't fix anything. The patch you
> want
> is probably comment 11
>
> --
> You are receiving this mail because:
> You are on the CC list for the bug.
>

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2015-05-22
     Ever confirmed|0                           |1

--- Comment #21 from Jonathan Wakely <redi at gcc dot gnu.org> ---
If this is still a problem please provide a complete testcase that reproduces
it (one that actually links!)

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[tomga at wp dot pl]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

--- Comment #22 from Tomasz Gajewski <tomga at wp dot pl> ---
In comment #10 I've provided test patch to test case that exposed a problem
(and in comment #11 some fix to all those tests). Currently I can't check if it
applies cleanly and if errors occur. If you want probably I can find some time
in next few weeks.

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

--- Comment #23 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Tomasz Gajewski from comment #22)
> In comment #10 I've provided test patch to test case that exposed a problem
> (and in comment #11 some fix to all those tests). Currently I can't check if
> it applies cleanly and if errors occur. If you want probably I can find some
> time in next few weeks.

It applies cleanly, but all the tests pass for me.

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[tomga at wp dot pl]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

--- Comment #24 from Tomasz Gajewski <tomga at wp dot pl> ---
Well, they certainly did not at that time, so I think the bug can be closed.

[Bug libstdc++/53477] pretty printer fails with: Python Exception <type 'exceptions.IndexError'> list index out of range

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477

--- Comment #25 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Pawel, since you say you still see problems could you please provide a testcase
that actually links?