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* [Bug fortran/33847] New: Interface statement not detected: generate Error: Type/rank mismatch
@ 2007-10-21 6:53 m dot a dot hulsen at tue dot nl
2007-10-21 10:07 ` [Bug fortran/33847] " burnus at gcc dot gnu dot org
2007-10-21 10:33 ` burnus at gcc dot gnu dot org
0 siblings, 2 replies; 3+ messages in thread
From: m dot a dot hulsen at tue dot nl @ 2007-10-21 6:53 UTC (permalink / raw)
To: gcc-bugs
The following code gives:
t.f90:41.12:
call sub ( shape_line_P1 )
1
Error: Type/rank mismatch in argument 'sub1' at (1)
I tested ifort, lahey, g95 without any problem.
module int_m
interface shape_line_P1
module procedure shape_line_P1, shape_line_P1_2
end interface
contains
subroutine shape_line_P1 ( xr, phi, dphi )
real, intent(in), dimension(:) :: xr
real, intent(out), dimension(:,:) :: phi
real, intent(out), dimension(:,:), optional :: dphi
phi = 0
dphi = 0
end subroutine shape_line_P1
subroutine shape_line_P1_2 ( xr, phi, dphi )
real, intent(in), dimension(:,:) :: xr
real, intent(out), dimension(:,:) :: phi
real, intent(out), dimension(:,:,:), optional :: dphi
phi = 0
dphi = 0
end subroutine shape_line_P1_2
end module int_m
module tt
use int_m
contains
subroutine sub ( sub1 )
interface
subroutine sub1 ( xr, phi, dphi )
real, intent(in), dimension(:,:) :: xr
real, intent(out), dimension(:,:) :: phi
real, intent(out), dimension(:,:,:), optional :: dphi
end subroutine sub1
end interface
real, dimension(2,1) :: xr
real, dimension(2,2) :: phi
real, dimension(2,2,1) :: dphi
xr = 0
call sub1 ( xr, phi, dphi )
end subroutine sub
end module tt
program z
use tt
call sub ( shape_line_P1 )
end program z
--
Summary: Interface statement not detected: generate Error:
Type/rank mismatch
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: m dot a dot hulsen at tue dot nl
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33847
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug fortran/33847] Interface statement not detected: generate Error: Type/rank mismatch
2007-10-21 6:53 [Bug fortran/33847] New: Interface statement not detected: generate Error: Type/rank mismatch m dot a dot hulsen at tue dot nl
@ 2007-10-21 10:07 ` burnus at gcc dot gnu dot org
2007-10-21 10:33 ` burnus at gcc dot gnu dot org
1 sibling, 0 replies; 3+ messages in thread
From: burnus at gcc dot gnu dot org @ 2007-10-21 10:07 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from burnus at gcc dot gnu dot org 2007-10-21 10:07 -------
(And the program is accepted using the patch from bug 33162 comment 2, however,
I think the patch is the wrong to solution for this PR and bug 33162.)
NAG f95 also gives the following error:
Error: line 41: Actual proc SHAPE_LINE_P1 arg 1 is assumed-shape or POINTER
array with different rank from dummy proc SUB1 arg
Error: line 41: Incompatible procedure argument for SUB1 (no. 1) of SUB
The program works if one changes
call sub ( shape_line_P1 ) ! Generic functions; specific: *_1, *_2
into
call sub ( shape_line_P1_2 ) ! Specific function
Ad hoc, I expect that the program is valid, but I still have to check the
standard.
--
burnus at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Interface statement not |Interface statement not
|detected: generate Error: |detected: generate Error:
|Type/rank mismatch |Type/rank mismatch
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33847
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug fortran/33847] Interface statement not detected: generate Error: Type/rank mismatch
2007-10-21 6:53 [Bug fortran/33847] New: Interface statement not detected: generate Error: Type/rank mismatch m dot a dot hulsen at tue dot nl
2007-10-21 10:07 ` [Bug fortran/33847] " burnus at gcc dot gnu dot org
@ 2007-10-21 10:33 ` burnus at gcc dot gnu dot org
1 sibling, 0 replies; 3+ messages in thread
From: burnus at gcc dot gnu dot org @ 2007-10-21 10:33 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from burnus at gcc dot gnu dot org 2007-10-21 10:33 -------
I cannot read. You used:
interface shape_line_P1
module procedure shape_line_P1, shape_line_P1_2
end interface
Thus "shape_line_P1" is both a specific subroutine and a generic subroutine,
however, the standard mandates:
"If the specific name is also a generic name, only the specific procedure is
associated with the dummy argument."
And as the specific subroutine "shape_line_P1" does not match the interface of
sub's dummy argument "sub1", the program is invalid and the error printed by
gfortran and NAG f95 is correct.
To fix the program, change:
call sub ( shape_line_P1 ) ! wrong specific function
into
call sub ( shape_line_P1_2 ) ! correct specific function
-----------------
Now to the thing I read:
interface shape_line_P1
module procedure shape_line_P1_1, shape_line_P1_2
end interface !_________________^^
which means that "shape_line_P1" is only a generic function and not a specific
function. However, this is also invalid and properly rejected by gfortran. The
standard writes:
For "a dummy procedure[...], the associated actual argument shall be the
specific name".
Here, gfortran writes:
"Error: GENERIC non-INTRINSIC procedure 'shape_line_p1' is not allowed as an
actual argument"
----------------
Longer excerpt from the Fortran 2003 standard:
"12.4.1.3 Actual arguments associated with dummy procedure entities"
[...]
"If a dummy argument is a dummy procedure without the POINTER attribute, the
associated actual argument shall be the specific name of an external, module,
dummy, or intrinsic procedure, an associated procedure pointer, or a reference
to a function that returns an associated procedure pointer. The only intrinsic
procedures permitted are those listed in 13.6 and not marked with a bullet (*).
If the specific name is also a generic name, only the specific procedure is
associated with the dummy argument."
----------------------------
Closed as invalid on this basis of this analysis.
Nonetheless, thanks for reporting bugs in general - as user feedback is
essential to iron out bugs and sometimes it is not obvious whether something is
a bug or not.
--
burnus at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |burnus at gcc dot gnu dot
| |org
Status|UNCONFIRMED |RESOLVED
Resolution| |INVALID
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33847
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2007-10-21 6:53 [Bug fortran/33847] New: Interface statement not detected: generate Error: Type/rank mismatch m dot a dot hulsen at tue dot nl
2007-10-21 10:07 ` [Bug fortran/33847] " burnus at gcc dot gnu dot org
2007-10-21 10:33 ` burnus at gcc dot gnu dot org
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