CODEWITHSUNDEEP
pythonc++linuxstlgdb
Mackerel
Mackerel

Reputation: 76

gdb pretty printer for stl throw a "TypeError"

I followed STL Support Tools and find it is not working on my system. I use gnome Ubuntu 14.04. And I tried this:

(gdb) p vct
Python Exception <class 'TypeError'> iter() returned non-iterator of type '_iterator': 
$1 = std::vector of length 20, capacity 32

It threw a "TypeError", and only print length and capacity. My g++ and gdb version:

g++ --version
g++ (Ubuntu 4.8.2-19ubuntu1) 4.8.2
gdb --version 
GNU gdb (Ubuntu 7.7-0ubuntu3.1) 7.7

My .gdbinit:

python
import sys 
sys.path.insert(0,'/home/james/bin/gdb_printers/python')
from libstdcxx.v6.printers import register_libstdcxx_printers
register_libstdcxx_printers (None)
end

Please help me, thank you very much.

Upvotes: 2

Views: 493

Answers (3)

Tom Tromey
Tom Tromey

Reputation: 22549

Note that those instructions are really just for folks either in the past (before this stuff was packaged up) or on non-Linux systems. Your typical modern Linux distro will install these debugging scripts in a way that "just works" without any additional configury on your part.

Upvotes: 0

Mackerel
Mackerel

Reputation: 76

git clone https://github.com/Manicqin/gdb_printers__python python

This will solve the problem perfectly.

no TypeError and no python 3 problem.

Upvotes: 0

Employed Russian
Employed Russian

Reputation: 213754

sys.path.insert(0,'/home/james/bin/gdb_printers/python')

How did you get /home/james/bin/gdb_printers/python?

Assuming you followed (inaccurate) instructions on the wiki, and did this:

svn co svn://gcc.gnu.org/svn/gcc/trunk/libstdc++-v3/python

you now have pretty-printers that match the latest libstdc++ sources (aka "trunk"), while your libstdc++ itself is over a year old, and came from gcc-4.8.

To get correct pretty-printers, you need to get them from a matching gcc branch. I believe the correct command is:

svn co svn://gcc.gnu.org/svn/gcc/branches/gcc-4_8-branch/libstdc++-v3/python

Upvotes: 5

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