* [Bug fortran/64474] [4.8 Regression] transfer(c_null_ptr, ...) causes an internal error
2015-01-02 15:14 [Bug fortran/64474] New: transfer(c_null_ptr, ...) causes an internal error arjen.markus895 at gmail dot com
@ 2015-01-02 15:28 ` janus at gcc dot gnu.org
2015-01-02 22:06 ` arjen.markus895 at gmail dot com
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: janus at gcc dot gnu.org @ 2015-01-02 15:28 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64474
janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-01-02
CC| |janus at gcc dot gnu.org
Summary|transfer(c_null_ptr, ...) |[4.8 Regression]
|causes an internal error |transfer(c_null_ptr, ...)
| |causes an internal error
Ever confirmed|0 |1
--- Comment #1 from janus at gcc dot gnu.org ---
I see the ICE with 4.7.4 and 4.8.3, but it is gone with 4.9.1 and trunk.
Also there is no ICE in 4.6.4, which technically makes it a regression. If we
can identify the commit which fixed this in 4.9, it could be backported to 4.8.
Btw, 4.7 and earlier show the warning:
subroutine croutine( array ) bind(c,name='croutine')
1
Warning: Variable 'array' at (1) is a parameter to the BIND(C) procedure
'croutine' but may not be C interoperable
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug fortran/64474] [4.8 Regression] transfer(c_null_ptr, ...) causes an internal error
2015-01-02 15:14 [Bug fortran/64474] New: transfer(c_null_ptr, ...) causes an internal error arjen.markus895 at gmail dot com
2015-01-02 15:28 ` [Bug fortran/64474] [4.8 Regression] " janus at gcc dot gnu.org
@ 2015-01-02 22:06 ` arjen.markus895 at gmail dot com
2015-01-09 11:31 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: arjen.markus895 at gmail dot com @ 2015-01-02 22:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64474
--- Comment #2 from Arjen Markus <arjen.markus895 at gmail dot com> ---
Hi Janus,
thanks for looking into this. Personally, I have no problem moving to
version 4.9. It's just that I ran into the problem.
Regards,
Arjen
2015-01-02 16:28 GMT+01:00 janus at gcc dot gnu.org <gcc-bugzilla@gcc.gnu.org>:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64474
>
> janus at gcc dot gnu.org changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> Keywords| |ice-on-valid-code
> Status|UNCONFIRMED |NEW
> Last reconfirmed| |2015-01-02
> CC| |janus at gcc dot gnu.org
> Summary|transfer(c_null_ptr, ...) |[4.8 Regression]
> |causes an internal error |transfer(c_null_ptr, ...)
> | |causes an internal error
> Ever confirmed|0 |1
>
> --- Comment #1 from janus at gcc dot gnu.org ---
> I see the ICE with 4.7.4 and 4.8.3, but it is gone with 4.9.1 and trunk.
>
> Also there is no ICE in 4.6.4, which technically makes it a regression. If we
> can identify the commit which fixed this in 4.9, it could be backported to 4.8.
>
> Btw, 4.7 and earlier show the warning:
>
> subroutine croutine( array ) bind(c,name='croutine')
> 1
> Warning: Variable 'array' at (1) is a parameter to the BIND(C) procedure
> 'croutine' but may not be C interoperable
>
> --
> You are receiving this mail because:
> You reported the bug.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug fortran/64474] [4.8 Regression] transfer(c_null_ptr, ...) causes an internal error
2015-01-02 15:14 [Bug fortran/64474] New: transfer(c_null_ptr, ...) causes an internal error arjen.markus895 at gmail dot com
2015-01-02 15:28 ` [Bug fortran/64474] [4.8 Regression] " janus at gcc dot gnu.org
2015-01-02 22:06 ` arjen.markus895 at gmail dot com
@ 2015-01-09 11:31 ` rguenth at gcc dot gnu.org
2015-01-23 19:25 ` dominiq at lps dot ens.fr
2015-02-11 14:31 ` burnus at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-01-09 11:31 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64474
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.8.5
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug fortran/64474] [4.8 Regression] transfer(c_null_ptr, ...) causes an internal error
2015-01-02 15:14 [Bug fortran/64474] New: transfer(c_null_ptr, ...) causes an internal error arjen.markus895 at gmail dot com
` (2 preceding siblings ...)
2015-01-09 11:31 ` rguenth at gcc dot gnu.org
@ 2015-01-23 19:25 ` dominiq at lps dot ens.fr
2015-02-11 14:31 ` burnus at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: dominiq at lps dot ens.fr @ 2015-01-23 19:25 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64474
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The ICE has been fixed between revisions r197010 (2013-03-23, ICE) and r197238
(2013-03-29, compile), likely the monster commit r197053 for a lot of PRs
(pr38536, ..., pr56378). AFAICR this commit is too invasive to be back ported
to 4.8. If there is no objection till Sunday, I'll close this PR as FIXED (4.9
and 5.0).
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug fortran/64474] [4.8 Regression] transfer(c_null_ptr, ...) causes an internal error
2015-01-02 15:14 [Bug fortran/64474] New: transfer(c_null_ptr, ...) causes an internal error arjen.markus895 at gmail dot com
` (3 preceding siblings ...)
2015-01-23 19:25 ` dominiq at lps dot ens.fr
@ 2015-02-11 14:31 ` burnus at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: burnus at gcc dot gnu.org @ 2015-02-11 14:31 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64474
Tobias Burnus <burnus at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |burnus at gcc dot gnu.org
Resolution|--- |WONTFIX
--- Comment #4 from Tobias Burnus <burnus at gcc dot gnu.org> ---
WONTFIX.
I don't think we will fix this for 4.8 - especially as 4.9 and 5 are working.
If someone feels inclined to fix it, feel free to reopen.
(In reply to Arjen Markus from comment #0)
> I needed to pass a null pointer from Fortran to C. One attempt to do so was
> via code like this:
> subroutine croutine( array ) bind(c,name='croutine')
> real, dimension(*) :: array
> end subroutine
How about using "OPTIONAL":
real, dimension(*), OPTIONAL :: array
> call croutine( transfer(c_null_ptr, dummy) )
... and call it simply as "call croutine()"?
That's a Fortran 2008 feature, supported by GCC since 4.7.
^ permalink raw reply [flat|nested] 6+ messages in thread