cover C extension of pt=ython module with python3.5-dbg segfault

[davidtazy]

ubuntu 16.04 32 bits
kcov --version -> 35

I would like to cover code of python module C extension
#206 suggest to use python interp with debug symbols.

`

kcov cov/ /usr/bin/python3.5-dbg
Python 3.5.2 (default, Nov 12 2018, 13:43:14)
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
kcov: Process exited with signal 11 (SIGSEGV) at 0xb7fe0abd

kcov cov/ /usr/bin/python3.5-dbg myscript.py
kcov: Process exited with signal 11 (SIGSEGV) at 0xb7fe0abd

`
immediatly crash

I maybe missunderstand something, I thought python3.5-dbg was python binary with symbols

[SimonKagstrom]

Well, that might cover the extensions, but I'm not quite sure how python loads them.

It might be the same issue as in #82, and then you should add --verify to the kcov command line. However, you're probably not very interested in the Python interpreter sources itself, so add --include-pattern=path-to-where-your-extension-sources-are to limit collection.

[davidtazy]

--verify did the job!
and its working with standard version of python, (/usr/bin/python3)
maybe its an hidden feature you could promote
thx you

[SimonKagstrom]

Well, the Python 3 stuff is probably due to the fix in #250 .

As for verify, it would be good to have enabled by default, but unfortunately it decreases performance by quite a lot. It's also mainly needed for Rust programs, only sporadically for other languages.