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

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

[dominiq at lps dot ens.fr]

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

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2013-06-23
     Ever confirmed|0                           |1

--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Is the problem still there? I cannot reproduce it with trunk: 'gcov -abcfu
mdl.f90' executes in milliseconds (I don't have lcov).

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

[dominiq at lps dot ens.fr]

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

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|---                         |WORKSFORME

--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
No reply since 9 months, inactive since more than 4 years. Closing as
WORSFORME.

[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.

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

[kargl at gcc dot gnu.org]

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

--- Comment #7 from kargl at gcc dot gnu.org ---
(In reply to OTIS from comment #6)
> 
> gfortran-4.4.5
>

4.4.5 was released almost 4 years.  There have numerous
releases since 4.4.5 came out.  See comment #5.

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

[graeme dot parkin at btinternet dot com]

------- Comment #3 from graeme dot parkin at btinternet dot com  2010-02-03 15:47 -------
(In reply to comment #2)
> -a is very expensive and prone to run into some endless cfg reduction, try
> to avoid it.
> 
I am actually using lcov (1.9) which uses it automatically (only by looking
into lcov discovered it used -a if available). I assume lcov uses it for some
analysis purpose. Not sure you can stop it and not sure what it does if I do.


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

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

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2010-02-03 15:41 -------
-a is very expensive and prone to run into some endless cfg reduction, try
to avoid it.


-- 


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

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

[graeme dot parkin at btinternet dot com]

------- Comment #1 from graeme dot parkin at btinternet dot com  2010-02-03 15:06 -------
Created an attachment (id=19796)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19796&action=view)
Contains all Fortran files which give this gcov -a error

Note can use compile.sh to run compilation etc. Expects lcov in place but can
remove and replace with gcov -a. Only run under cygwin 1.7.1.


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