[PATCH v2 2/2] ioctl console test v2

[Dmitry V. Levin]

On Tue, Mar 17, 2020 at 10:11:38PM +0530, Bran S wrote:
> On Mon, 9 Mar 2020 at 19:19, Eugene Syromiatnikov <esyr at redhat.com> wrote:
> >
> > On Mon, Mar 09, 2020 at 07:06:49PM +0530, Bran S wrote:
> > > I am interested in the Comprehensive test suite project.
> >
> > I'd suggest building strace with LCOV with different kernel headers
> > on different arches (./configure --enable-code-coverage && make check &&
> > make code-coverage-capture) and look at parts of the code (and branches)
> > that are not covered by tests.  Other possibility is to check out
> > codecov[1], but it's vaguely representative (it's built against rather
> > old kernel and only on x86_64).
> >
> > [1] https://codecov.io/gh/strace/strace
> 
> On running `make code-coverage-capture` I am getting below error.
> ----------
> lcov  --directory . --capture --output-file
> "strace-5.5.0.67.269b-coverage.info.tmp" --test-name
> "strace_5_5_0_67_269b" --no-checksum --compat-libtool  --rc
> lcov_branch_coverage=1 --gcov-tool "gcov"
> Capturing coverage data from .
> Found gcov version: 8.2.1
> Using intermediate gcov format
> Scanning . for .gcda files ...
> Found 313 data files in .
> Processing libmpers_m32_a-fetch_struct_stat64.gcda
> geninfo: ERROR: GCOV failed for
> /home/mybox/strace/libmpers_m32_a-fetch_struct_stat64.gcda!
> make: *** [Makefile:9957: code-coverage-capture] Error 29
> ----------
> 
> Searching about I found a suggestion to make sure that the gcc and
> gcov versions are same.
> My gcc and gcov version are same i.e. gcc (GCC) 8.2.1 20180801 and
> gcov (GCC) 8.2.1 20180801 respectively.
> Any ideas ?

Apparently, your lcov is too old and cannot handle the gcov data
produced by gcc.  FWIW, lcov v1.14-6-g40580cd is known to work.


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