[Bug libfortran/30617] recursive I/O hangs under OSX

[dominiq at lps dot ens dot fr]

------- Comment #18 from dominiq at lps dot ens dot fr  2007-02-08 10:03 -------
Subject: Re:  recursive I/O hangs under OSX

> gfortran.dg/intrinsic_actual_2.f90 fails on Linux too when linked with
> -fopenmp (or -lpthread, -fopenmp implies that), but that is fine, the testcase
> is IMHO not valid Fortran95 source.

When you say "fails" what kind of failure do you get? Is this a timeout or not?
If this is a runtime error, a "seg fault", or whatever but hanging, this is
fine
with me.

> Now, if Fortran2003 allows some recursive access to the same unit (under which
> conditions?)

I think the question is settled: recursive access to external units is invalid.

> then anyone calling gfc_unit could then check the recursion count and if it is bigger than 1,
> unlock_unit it again and report an error.

This seems the path to follow to implement a runtime error, isn't it?
To be frank, I have a very limited understanding of what you are saying, but
I could look again to the code to figure out what it looks like: I understand
more or less the technical concepts, but not the actual implementation.

Thanks for your time.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30617