[Bug fortran/18689] New: Internal compiler error with character pointer association in module subroutine

[Bug fortran/18689] New: Internal compiler error with character pointer association in module subroutine

[paulthomas2 at wanadoo dot fr]

!Extracted from linked data demo in appendix G
!
! (c) Copyright Michael Metcalf and John Reid, 1992. This file may be
! freely used and copied for educational purposes provided this notice
! remains attached. Extracted from "Fortran 90 Explained" Oxford
! University Press (Oxford and New York), ISBN 0-19-853772-7.
!
MODULE bug
   character(4), allocatable, target :: names(:)
CONTAINS
  SUBROUTINE bugeye(pnames)
    character(4), pointer                      :: pnames(:)
    allocate (names(10))
    pnames => names
  end subroutine bugeye
end module bug
program bug_demo
  use bug
end program bug_demo

$ /gcc-4.0/bin/gfortran -O3 bug_demo.f90 -o bug_demo
bug_demo.f90: In function 'bugeye':
bug_demo.f90:16: internal compiler error: in gfc_add_modify_expr, 
at /fortran/tr
ans.c:154
Please submit a full bug report,

-- 
           Summary: Internal compiler error with character pointer
                    association in module subroutine
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: paulthomas2 at wanadoo dot fr
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18689

[Bug fortran/18689] Internal compiler error with character pointer association in module subroutine

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-11-27 15:14 -------
Confirmed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2004-11-27 15:14:28
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18689

[Bug fortran/18689] Internal compiler error with character pointer association in module subroutine

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-05-01 14:19 -------
Fixed for 4.0.0.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18689

[Bug fortran/18689] Internal compiler error with character pointer association in module subroutine

[paulthomas2 at wanadoo dot fr]

------- Additional Comments From paulthomas2 at wanadoo dot fr  2005-05-01 15:11 -------
Subject: Re:  Internal compiler error with character pointer association in module subroutine

Andrew,

I have taken my eye off the ball, after my most recent cock-up; when did 
this get fixed?  I have searched for something related to PR18689 but have 
not found it - has this benefitted from fall-out from something else?  If 
so, a wee test case should be prepared.

Paul T 




-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18689

[Bug fortran/18689] Internal compiler error with character pointer association in module subroutine

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-05-01 15:15 -------
Woops, this is not fixed, I must have used the wrong file to test with.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18689

[Bug fortran/18689] Internal compiler error with character pointer association in module subroutine

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |NEW
   Target Milestone|4.0.0                       |---


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18689

[Bug fortran/18689] Internal compiler error with character pointer association in module subroutine

[paulthomas2 at wanadoo dot fr]

------- Additional Comments From paulthomas2 at wanadoo dot fr  2005-05-01 15:17 -------
Subject: Re:  Internal compiler error with character pointer association in module subroutine

In fact, how come it is fixed in 4.0 and not in 4.1?  I get the error still 
with yesterday's cvs for any optmisation.  I did not think that was 
possible?

Paul T 




-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18689

[Bug fortran/18689] Internal compiler error with character pointer association in module subroutine

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-05-29 16:02 -------
Subject: Bug 18689

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	pault@gcc.gnu.org	2005-05-29 16:02:11

Modified files:
	gcc/fortran    : trans-array.c trans-expr.c 

Log message:
	2005-05-29 Paul Thomas  <pault@gcc.gnu.org>
	
	PR fortran/16939
	PR fortran/17192
	PR fortran/17193
	PR fortran/17202
	PR fortran/18689
	PR fortran/18890
	PR fortran/21297
	* fortran/trans-array.c (gfc_conv_resolve_dependencies): Add string
	length to temp_ss for character pointer array assignments.
	* fortran/trans-expr.c (gfc_conv_variable): Correct errors in
	dereferencing of characters and character pointers.
	* fortran/trans-expr.c (gfc_conv_function_call): Provide string
	length as return argument for various kinds of handling of return.
	Return a char[]* temporary for character pointer functions and
	dereference the temporary upon return.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fortran/trans-array.c.diff?cvsroot=gcc&r1=1.45&r2=1.46
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fortran/trans-expr.c.diff?cvsroot=gcc&r1=1.44&r2=1.45



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18689

[Bug fortran/18689] Internal compiler error with character pointer association in module subroutine

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-06-05 08:59 -------
Subject: Bug 18689

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-4_0-branch
Changes by:	pault@gcc.gnu.org	2005-06-05 08:59:18

Modified files:
	gcc/fortran    : ChangeLog trans-array.c trans-expr.c 

Log message:
	005-05-31  Paul Thomas  <pault@gcc.gnu.org>
	
	PR fortran/18109
	PR fortran/18283
	PR fortran/19107
	PR fortran/16939
	PR fortran/17192
	PR fortran/17193
	PR fortran/17202
	PR fortran/18689
	PR fortran/18890
	* fortran/trans-array.c (gfc_conv_expr_descriptor): Obtain the
	string length from the expression typespec character length value
	and set temp_ss->stringlength and backend_decl. Obtain the
	tree expression from gfc_conv_expr rather than gfc_conv_expr_val.
	Dereference the expression to obtain the character.
	* fortran/trans-array.c (gfc_conv_resolve_dependencies): Add string
	length to temp_ss for character pointer array assignments.
	* fortran/trans-expr.c (gfc_conv_component_ref): Remove the
	dereference of scalar character pointer structure components.
	* fortran/trans-expr.c (gfc_trans_subarray_assign): Obtain the
	string length for the structure component from the component
	expression.
	* fortran/trans-expr.c (gfc_conv_variable): Correct errors in
	dereferencing of characters and character pointers.
	* fortran/trans-expr.c (gfc_conv_function_call): Provide string
	length as return argument for various kinds of handling of return.
	Return a char[]* temporary for character pointer functions and
	dereference the temporary upon return.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fortran/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.335.2.66&r2=1.335.2.67
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fortran/trans-array.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.39.2.3&r2=1.39.2.4
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fortran/trans-expr.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.38.2.4&r2=1.38.2.5



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18689

[Bug fortran/18689] Internal compiler error with character pointer association in module subroutine

[pault at gcc dot gnu dot org]

------- Additional Comments From pault at gcc dot gnu dot org  2005-06-05 22:46 -------
Fixed in 4.0 and 4.1

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18689

[Bug fortran/18689] Internal compiler error with character pointer association in module subroutine

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.0.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18689