Xapian devel - Mar 2016 - Unable to generate lcov test coverage reports (Out of memory error)

Hi all,

I was trying to generate lcov test coverage reports for xapian-core but got
an out of memory error:

$ lcov --capture --directory . --output-file xapian-core.info
Capturing coverage data from .
Found gcov version: 4.7.3
Scanning . for .gcda files ...
Found 270 data files in .
Processing bin/xapian-progsrv.gcda
Out of memory!

These are the steps I followed in xapian-core directory **(lcov.xapian.org
is down so I referred to xapian-core/HACKING and some online resources for
these steps):

$ ./configure CXXFLAGS='-g -O0 --coverage' CFLAGS='-g -O0
--coverage'
$ make check
$ lcov --capture --directory . --output-file xapian-core.info

which rendered the error mentioned above.

I did make sure that gcc and gcov have same versions. Can someone please
help me out? (I am generating these tests reports for getting familiar with
writing tests for use in Letor stabilization project for gsoc)

Regards,
Ayush
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On Sat, Mar 12, 2016 at 08:15:35PM -0500, Ayush Tomar
wrote:
> I was trying to generate lcov test coverage reports for xapian-core but got
> an out of memory error:
> 
> $ lcov --capture --directory . --output-file xapian-core.info
> Capturing coverage data from .
> Found gcov version: 4.7.3
> Scanning . for .gcda files ...
> Found 270 data files in .
> Processing bin/xapian-progsrv.gcda
> Out of memory!
What version of lcov are you using?  1.11 has some fixes I submitted
which significantly reduce memory usage (without these, I couldn't
run lcov on Xapian's testsuite on a VM with 1GB of RAM - with them
it worked fine).

Cheers,
    Olly

Thanks for your help. I was using version 1.19 of lcov. Getting version
1.11 fixed the issue.

On Sun, Mar 13, 2016 at 7:31 PM, Olly Betts <olly at survex.com> wrote:
> On Sat, Mar 12, 2016 at 08:15:35PM -0500, Ayush Tomar wrote:
> > I was trying to generate lcov test coverage reports for xapian-core
but
> got
> > an out of memory error:
> >
> > $ lcov --capture --directory . --output-file xapian-core.info
> > Capturing coverage data from .
> > Found gcov version: 4.7.3
> > Scanning . for .gcda files ...
> > Found 270 data files in .
> > Processing bin/xapian-progsrv.gcda
> > Out of memory!
>
> What version of lcov are you using?  1.11 has some fixes I submitted
> which significantly reduce memory usage (without these, I couldn't
> run lcov on Xapian's testsuite on a VM with 1GB of RAM - with them
> it worked fine).
>
> Cheers,
>     Olly
>
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