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* [Bug fortran/59202] Erroneous argument aliasing with defined assignment
[not found] <bug-59202-4@http.gcc.gnu.org/bugzilla/>
@ 2014-03-22 15:41 ` dominiq at lps dot ens.fr
2021-06-01 15:38 ` vladimir.fuka at gmail dot com
` (2 subsequent siblings)
3 siblings, 0 replies; 4+ messages in thread
From: dominiq at lps dot ens.fr @ 2014-03-22 15:41 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59202
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2014-03-22
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Behavior still present at r208765.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug fortran/59202] Erroneous argument aliasing with defined assignment
[not found] <bug-59202-4@http.gcc.gnu.org/bugzilla/>
2014-03-22 15:41 ` [Bug fortran/59202] Erroneous argument aliasing with defined assignment dominiq at lps dot ens.fr
@ 2021-06-01 15:38 ` vladimir.fuka at gmail dot com
2021-06-03 8:34 ` federico.perini at gmail dot com
2021-06-03 8:35 ` federico.perini at gmail dot com
3 siblings, 0 replies; 4+ messages in thread
From: vladimir.fuka at gmail dot com @ 2021-06-01 15:38 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59202
Vladimir Fuka <vladimir.fuka at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |vladimir.fuka at gmail dot com
--- Comment #2 from Vladimir Fuka <vladimir.fuka at gmail dot com> ---
Behaviour still present in GCC 11.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug fortran/59202] Erroneous argument aliasing with defined assignment
[not found] <bug-59202-4@http.gcc.gnu.org/bugzilla/>
2014-03-22 15:41 ` [Bug fortran/59202] Erroneous argument aliasing with defined assignment dominiq at lps dot ens.fr
2021-06-01 15:38 ` vladimir.fuka at gmail dot com
@ 2021-06-03 8:34 ` federico.perini at gmail dot com
2021-06-03 8:35 ` federico.perini at gmail dot com
3 siblings, 0 replies; 4+ messages in thread
From: federico.perini at gmail dot com @ 2021-06-03 8:34 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59202
federico <federico.perini at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |federico.perini at gmail dot com
--- Comment #3 from federico <federico.perini at gmail dot com> ---
Created attachment 50918
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50918&action=edit
test program for self-assignment with derived type
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug fortran/59202] Erroneous argument aliasing with defined assignment
[not found] <bug-59202-4@http.gcc.gnu.org/bugzilla/>
` (2 preceding siblings ...)
2021-06-03 8:34 ` federico.perini at gmail dot com
@ 2021-06-03 8:35 ` federico.perini at gmail dot com
3 siblings, 0 replies; 4+ messages in thread
From: federico.perini at gmail dot com @ 2021-06-03 8:35 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59202
--- Comment #4 from federico <federico.perini at gmail dot com> ---
The self-assignment issue is present even if the derived type has no
allocatable components. Here is a sample test program that gives an error with
gfortran 10.2.0:
module assign
implicit none
private
type, public :: t
integer :: a
contains
procedure :: destroy=>t_destroy
procedure :: assign=>t_assign
generic :: assignment(=) =>assign
end type t
contains
elemental subroutine t_destroy(this)
class(t), intent(inout) :: this
this%a = 0
end subroutine t_destroy
subroutine t_assign(this,that)
class(t), intent(inout) :: this
class(t), intent(in) :: that
call this%destroy() ! Clean memory first
select type (thatPtr=>that)
type is (t)
this%a = thatPtr%a
end select
end subroutine t_assign
end module assign
program test
use assign
type(t), allocatable :: t1(:)
allocate(t1(10))
do i=1,10
t1(i)%a = i
end do
n = 0
do i=1,10
if (mod(i,2)/=0) then
n = n + 1
t1(n) = t1(i)
print *, 'i=',i,' t(i)%a=',t1(i)%a,' expected t(i)%a=',i,':
',merge('ERROR!','OK ',t1(i)%a/=i)
endif
end do
end program test
^ permalink raw reply [flat|nested] 4+ messages in thread
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[not found] <bug-59202-4@http.gcc.gnu.org/bugzilla/>
2014-03-22 15:41 ` [Bug fortran/59202] Erroneous argument aliasing with defined assignment dominiq at lps dot ens.fr
2021-06-01 15:38 ` vladimir.fuka at gmail dot com
2021-06-03 8:34 ` federico.perini at gmail dot com
2021-06-03 8:35 ` federico.perini at gmail dot com
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