https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92836
Dominique d'Humieres changed:
What|Removed |Added
Status|NEW |ASSIGNED
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92836
Janne Blomqvist changed:
What|Removed |Added
Assignee|unassigned at gcc dot gnu.org |jb at gcc dot gnu.org
--- Comme
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92836
--- Comment #17 from Janne Blomqvist ---
(In reply to Jerry DeLisle from comment #15)
> Did we conclude that this is an expected race condition?
>
> I run the example comment 14 and it just hangs for me.
Well, hangs in what sense?
For me it ru
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92836
Martin Liška changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Last reconfirmed|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92836
--- Comment #16 from Thomas Koenig ---
(In reply to Jerry DeLisle from comment #15)
> Did we conclude that this is an expected race condition?
>
> I run the example comment 14 and it just hangs for me.
It's certainly not mandated to work, but I
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92836
--- Comment #15 from Jerry DeLisle ---
Did we conclude that this is an expected race condition?
I run the example comment 14 and it just hangs for me.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92836
--- Comment #14 from Thomas Koenig ---
Created attachment 47441
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47441&action=edit
Output of valgrind --tool=helgrind
The code from https://gcc.gnu.org/ml/fortran/2019-12/msg00020.html :
prog
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92836
--- Comment #13 from Janne Blomqvist ---
To clarify my previous message, instead of
inquire(..., exist=exist)
if (exist) then
open(...)
else
! Handle file not existing
end if
you can do
open(..., status='old', iostat=stat)
if (stat /= o)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92836
--- Comment #12 from Andrew Benson ---
(In reply to Thomas Koenig from comment #11)
> (In reply to Andrew Benson from comment #10)
> > (In reply to Thomas Koenig from comment #8)
> > My reasoning for using INQUIRE to check the existence of the fi
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92836
--- Comment #11 from Thomas Koenig ---
(In reply to Andrew Benson from comment #10)
> (In reply to Thomas Koenig from comment #8)
> > Also, why do you use inquire at all? AFAIK, it is not an error
> > to OPEN a file more than one if you don't ch
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92836
--- Comment #10 from Andrew Benson ---
(In reply to Thomas Koenig from comment #8)
> > No. The inquire() is used only to see if the file exists already. If it
> > does, the code branches to read the file, if it does not, the code branches
> > to
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92836
--- Comment #9 from Janne Blomqvist ---
(In reply to Thomas Koenig from comment #8)
> > No. The inquire() is used only to see if the file exists already. If it
> > does, the code branches to read the file, if it does not, the code branches
> > to
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92836
Thomas Koenig changed:
What|Removed |Added
CC||tkoenig at gcc dot gnu.org
--- Comment #
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92836
--- Comment #7 from Tobias Burnus ---
(In reply to Jerry DeLisle from comment #3)
> character(len=27) :: c
> Fortran runtime error: Fortran runtime error: End of recordEnd of record
This error I get because 27 characters are not enough — Other
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92836
Tobias Burnus changed:
What|Removed |Added
CC||burnus at gcc dot gnu.org
--- Comment #6
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92836
Janne Blomqvist changed:
What|Removed |Added
CC||jb at gcc dot gnu.org
--- Comment #5 f
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92836
--- Comment #4 from Jerry DeLisle ---
Removing close statement:
$ ./a.out
0 8 4
2 8 4
-10
5 8 4
4 8 4
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92836
Jerry DeLisle changed:
What|Removed |Added
CC||jvdelisle at gcc dot gnu.org
--- Comment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92836
--- Comment #2 from Andrew Benson ---
Answers to questions raised by Jerry at:
https://gcc.gnu.org/ml/fortran/2019-12/msg00059.html
> 1) Are you opening a unique file (by file name) in each thread?
No. The code is operating on many files, but
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92836
--- Comment #1 from Andrew Benson ---
Running with -fsanitize=thread (suggested by Tobias) gives:
==
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=9982)
Cycle in lock order graph: M26 (0x7f02bb31c340)
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