https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94578
Thomas Koenig changed:
What|Removed |Added
See Also||https://gcc.gnu.org/bugzill
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94578
--- Comment #11 from Jan-Willem Blokland ---
If you make use of an temporary variable, it sounds like you will do an
additional memory copy. Therefore, I am wondering what the performance impact
will be. Naively, I would think the span solution
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94578
--- Comment #10 from CVS Commits ---
The master branch has been updated by Thomas Kथà¤nig :
https://gcc.gnu.org/g:cf3f7b309ffdd888fdd85048ac9b4bcdc2713a45
commit r10-7960-gcf3f7b309ffdd888fdd85048ac9b4bcdc2713a45
Author: Thomas König
Date:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94578
--- Comment #9 from Thomas Koenig ---
Here's what a solution could look like. I am not really sure that this
is the way to go, there may be some corner cases (pointer to an
argument which was passed as a transposed argument?) which this
might
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94578
--- Comment #8 from Thomas Koenig ---
The bug appears to affect intrinsics only, for example this
program main
implicit none
type foo
integer :: x, y
end type foo
integer, dimension(:), pointer :: bp
type (foo), dimension(4),
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94578
--- Comment #7 from Jan-Willem Blokland ---
Thanks for verifying my case. Your test makes me wonder which intrinsics are
effected in this and other versions of gfortran. Furthermore, I assume it also
happens when you pass the pointer to
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94578
--- Comment #6 from Thomas Koenig ---
Also wrong:
program main
implicit none
type foo
integer :: x, y
end type foo
integer :: i
integer, dimension (2,2) :: array2d
integer, dimension(:), pointer :: array1d
type(foo),
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94578
--- Comment #5 from Thomas Koenig ---
Somewhat smaller test case:
program main
implicit none
type foo
integer :: x, y
end type foo
integer :: i
integer, dimension (2,2) :: array2d
integer, dimension(:), pointer :: array1d
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94578
--- Comment #4 from Thomas Koenig ---
Looks like span is not handled in reshape (at all).
It will be interesting to see how other intrinsics
such as maxloc and just about everything else
handles this.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94578
Thomas Koenig changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Ever confirmed|0
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94578
--- Comment #2 from Jan-Willem Blokland ---
Created attachment 48259
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48259=edit
Program bug_reshape
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94578
--- Comment #1 from Jan-Willem Blokland ---
Below are the results of the test program. The results of array1d should have
been identical to array2d.
--- array2d ---
1 1 0.100E+01 0.100E+01 0.100E+01 0.100E+00
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