http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56852
Bug #: 56852
Summary: ICE on invalid: "Bad array reference" for an
undeclared loop variable
Classification: Unclassified
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: fortran
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: b...@stellardeath.org
Created attachment 29811
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29811
Minimal testcase, invalid code, uncomment line 4 to make it valid (and compile)
The following (invalid code) example produces an internal error, hit this with
4.7.2, seems to also affect my self-compiled 4.9.0 (which is used in the
following transcript).
The only thing remotely similar I could find is #55172, which however seems to
involve OOP.
If I declare "i" as integer to make the code valid, it compiles flawlessly.
Here the transcript, minimal.f90 is also appended as attachment:
$> cat minimal.f90
program test
implicit none
real :: a(4)
! integer :: i
read(0) (a(i),i=1,4)
end program
$> gfortran minimal.f90
minimal.f90:5.14:
read(0) (a(i),i=1,4)
1
Error: Symbol 'i' at (1) has no IMPLICIT type
minimal.f90:1.12:
program test
1
Internal Error at (1):
gfc_variable_attr(): Bad array reference
$> gfortran --version
GNU Fortran (GCC) 4.9.0 20130405 (experimental)
Copyright (C) 2013 Free Software Foundation, Inc.
GNU Fortran comes with NO WARRANTY, to the extent permitted by law.
You may redistribute copies of GNU Fortran
under the terms of the GNU General Public License.
For more information about these matters, see the file named COPYING
$>
