[Bug fortran/64613] New: <incomplete type> allocatable array after 4.7

[Bug fortran/64613] New: <incomplete type> allocatable array after 4.7

[ql.le at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64613

            Bug ID: 64613
           Summary: <incomplete type> allocatable array after 4.7
           Product: gcc
           Version: 4.9.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ql.le at hotmail dot com

A small code to test:

```
integer :: x(2,3)
integer, allocatable :: y(:,:)

allocate(y(2,3))

x = reshape([1,2,3,4,5,6], [2,3], order=[2,1])
y = reshape([1,2,3,4,5,6], [2,3], order=[2,1])

print *, 'x', transpose(x)
print *, 'y', transpose(y)

end
```

On 4.7, gdb works fine with both x and y

```
[qlle@(none) ~]$ gdb --version | head -n1
GNU gdb (GDB) Fedora (7.4.50.20120120-54.fc17)
[qlle@(none) ~]$ gfortran --version | head -n1
GNU Fortran (GCC) 4.7.2 20120921 (Red Hat 4.7.2-2)

(gdb) i lo
x = (( 1, 4) ( 2, 5) ( 3, 6) )
y = (( 1, 4) ( 2, 5) ( 3, 6) )
(gdb) p y(:,2)
$1 = (2, 5)
(gdb) p y(2,:)
$2 = (4, 5, 6)
(gdb) show language 
The current source language is "auto; currently fortran".
```

However on 4.9, `<incomplete type>` was shown instead:

```
~/Downloads❯ gdb --version | head -n 1
GNU gdb (GDB) 7.8.1

~/Downloads❯ gfortran --version | head -n1
GNU Fortran (Homebrew gcc 4.9.2_1) 4.9.2

~/Downloads❯ gdb a.out
...
(gdb) break 9
Breakpoint 1 at 0x100000b41: file alloc.f90, line 9.
run
...
(gdb) info locals
x = (( 1, 4) ( 2, 5) ( 3, 6) )
y = <incomplete type>
```
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From: "ramana at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/64310] libgcc2.c:2051:1: internal compiler error: in curr_insn_transform, at lra-constraints.c:3383
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idd310

Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:

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

--- Comment #4 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
Fixed then....

[Bug fortran/64613] <incomplete type> allocatable array after 4.7

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64613

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2015-03-31
     Ever confirmed|0                           |1

--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I get

(gdb) i lo
x = {{1, 4, 2}, {5, 3, 6}}
y = <incomplete type>

with 4.6.4, 4.7.3, and 4.8.2. With 5.0 I get

x = (( 1, 4) ( 2, 5) ( 3, 6) )
y = ()

Could this be related/duplicate of pr59438?

[Bug fortran/64613] <incomplete type> allocatable array after 4.7

[ql.le at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64613

--- Comment #2 from Quang Linh LE <ql.le at hotmail dot com> ---
Actually the problem was because I recompiled vanilla versions of GCC/GDB on
Fedora (I was on Fedora 17 with GCC 4.7). Fedora has long history of patches
for GBD include VLA. After trying serveral times with Archer and other VLA
implement, I gave up. The best way I can suggest to a normal user is grabbing a
new version of Fedora with recent version of GCC and GDB...

Unfortunately, if one is on OS X, I can't find any solution atm.

[Bug fortran/64613] <incomplete type> allocatable array after 4.7

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64613

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

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

--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Actually the problem was because I recompiled vanilla versions of GCC/GDB
> on Fedora (I was on Fedora 17 with GCC 4.7). Fedora has long history
> of patches for GBD include VLA. After trying serveral times with Archer
> and other VLA implement, I gave up. The best way I can suggest
> to a normal user is grabbing a new version of Fedora with recent version
> of GCC and GDB...

Oldest supported version is now 4.9. If the problem persists with Fedora,
please report upstream.

> Unfortunately, if one is on OS X, I can't find any solution atm.

I don't understand this reference to OS X.