[Bug fortran/42945] Gcov -a fails on Fortan generated object file (infinite loop?)

[cleme051 at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42945

--- Comment #6 from cleme051 at gmail dot com ---
Hello,

I'm trying to use lcov with a research code developed in Fortran (F77,F90) but
I have a similar problem than Graeme Parkin. 

The code is structured as follow :

./CODE/

 ./CODE/bin 

 ./CODE/src 

 ./CODE/testcases

 ./CODE/tools

After compiling the code (gfortran-4.4.5) with the "-fprofile-arcs"
"-ftest-coverage" options, I launch the following command :

"lcov -c -z ." 

Then, I run a test by using the executable located in ./CODE/bin where all the
".gda" and ".gcno" files are well generated. 

The next command is the source of my problems 

"lcov -b . -c -d . -o CODE.info"

More precisely, the problem comes from the following command (launched by lcov) 

"gcov file-problem.gcda -o file -b -c -p -a "

and, more particularly, from the uses of the option '-a'. The ".gcov" file is
never generated and, by using "strace", I see that the process is waited (what?
I don't know).

Without the option "-a", gcov works well. 

Richard Biener advices to avoid the use of '-a' but lcov uses it automatically.



My work is still in progress to understand the source of this problem but if
you have any ideas about it or advices....


Thanks you.