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* [Bug fortran/53326] New: -finit-integer, -finit-real and INTENT(OUT)
@ 2012-05-11 17:20 arnaud02 at users dot sourceforge.net
2012-05-11 17:59 ` [Bug fortran/53326] " arnaud02 at users dot sourceforge.net
2015-10-08 8:55 ` dominiq at lps dot ens.fr
0 siblings, 2 replies; 3+ messages in thread
From: arnaud02 at users dot sourceforge.net @ 2012-05-11 17:20 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53326
Bug #: 53326
Summary: -finit-integer, -finit-real and INTENT(OUT)
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: arnaud02@users.sourceforge.net
^ permalink raw reply [flat|nested] 3+ messages in thread* [Bug fortran/53326] -finit-integer, -finit-real and INTENT(OUT)
2012-05-11 17:20 [Bug fortran/53326] New: -finit-integer, -finit-real and INTENT(OUT) arnaud02 at users dot sourceforge.net
@ 2012-05-11 17:59 ` arnaud02 at users dot sourceforge.net
2015-10-08 8:55 ` dominiq at lps dot ens.fr
1 sibling, 0 replies; 3+ messages in thread
From: arnaud02 at users dot sourceforge.net @ 2012-05-11 17:59 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53326
--- Comment #1 from Arnaud Desitter <arnaud02 at users dot sourceforge.net> 2012-05-11 17:31:12 UTC ---
Consider:
>cat UIN15-int.f
!! check whether uninitialised variables are detected
!! for INTENT(OUT) arrays
program uin
integer x(10)
x = 2
call sub2(x,size(x)) ! x undefined on return
write(*,*) x(1)
end
subroutine sub2(x,n)
integer, intent(in) :: n
integer, intent(out) :: x(n)
end
>gfortran470 -finit-integer=10 UIN15-int.f
abg-ecldev01:/tmp/arnaud>./a.out
2
>cat UIN15-double.f
!! check whether uninitialised variables are detected
!! for INTENT(OUT) arrays
program uin
double precision x(10)
x = 2
call sub2(x,size(x)) ! x undefined on return
write(*,*) x(1)
end
subroutine sub2(x,n)
integer, intent(in) :: n
double precision, intent(out) :: x(n)
end
>gfortran470 -finit-real=snan UIN15-double.f
>./a.out
2.0000000000000000
As seen above, -finit-real and -finit-integer have no effect on INTENT(OUT)
variables. This would be a nice and useful improvement.
Note that the NAG compiler ("-nan") and the Sun compiler ("-xcheck=init_local
-stackvar") implement this feature.
(tests "UNI15" of http://ftp.aset.psu.edu/pub/ger/fortran/test/results.txt are
related)
^ permalink raw reply [flat|nested] 3+ messages in thread* [Bug fortran/53326] -finit-integer, -finit-real and INTENT(OUT)
2012-05-11 17:20 [Bug fortran/53326] New: -finit-integer, -finit-real and INTENT(OUT) arnaud02 at users dot sourceforge.net
2012-05-11 17:59 ` [Bug fortran/53326] " arnaud02 at users dot sourceforge.net
@ 2015-10-08 8:55 ` dominiq at lps dot ens.fr
1 sibling, 0 replies; 3+ messages in thread
From: dominiq at lps dot ens.fr @ 2015-10-08 8:55 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53326
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-10-08
Ever confirmed|0 |1
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Still present on trunk (6.0) at r228594.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2012-05-11 17:20 [Bug fortran/53326] New: -finit-integer, -finit-real and INTENT(OUT) arnaud02 at users dot sourceforge.net
2012-05-11 17:59 ` [Bug fortran/53326] " arnaud02 at users dot sourceforge.net
2015-10-08 8:55 ` dominiq at lps dot ens.fr
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