[Bug fortran/45795] New: [OOP] ICE in in gfc_add_component_ref plus bogus error message

[Bug fortran/45795] New: [OOP] ICE in in gfc_add_component_ref plus bogus error message

[sfilippone at uniroma2 dot it]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45795

           Summary: [OOP] ICE in in gfc_add_component_ref plus bogus error
                    message
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: sfilippone@uniroma2.it


Created attachment 21886
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=21886
test case

Hello,
This was working until a few days ago, now it's broken: the compiler gives a
bogus error message, and then ICEs. 
Trunk at r164617:
========================================================
[sfilippo@localhost bug24]$ gfortran -v
Using built-in specs.
COLLECT_GCC=gfortran
COLLECT_LTO_WRAPPER=/usr/local/gnu46/libexec/gcc/x86_64-unknown-linux-gnu/4.6.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc/configure --prefix=/usr/local/gnu46
--enable-languages=c,c++,fortran : (reconfigured) ../gcc/configure
--prefix=/usr/local/gnu46 --enable-languages=c,c++,fortran : (reconfigured)
../gcc/configure --prefix=/usr/local/gnu46 --enable-languages=c,c++,fortran :
(reconfigured) ../gcc/configure --prefix=/usr/local/gnu46
--enable-languages=c,c++,fortran : (reconfigured) ../gcc/configure
--prefix=/usr/local/gnu46 --enable-languages=c,c++,fortran,lto --no-create
--no-recursion : (reconfigured) ../gcc/configure --prefix=/usr/local/gnu46
--enable-languages=c,c++,fortran,lto --no-create --no-recursion :
(reconfigured) ../gcc/configure --prefix=/usr/local/gnu46
--enable-languages=c,c++,fortran,lto --no-create --no-recursion :
(reconfigured) ../gcc/configure --prefix=/usr/local/gnu46
--enable-languages=c,c++,fortran,lto --no-create --no-recursion
Thread model: posix
gcc version 4.6.0 20100925 (experimental) (GCC) 
[sfilippo@localhost bug24]$ gfortran -c bug24.f03      
bug24.f03:68.10:

    call b%cp_to_foo(tmp,info)
          1
Error: Type mismatch in argument 'a' at (1); passed CLASS(base) to
CLASS(s_base)
bug24.f03:11:0: internal compiler error: in gfc_add_component_ref, at
fortran/class.c:77
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

[Bug fortran/45795] [OOP] ICE in in gfc_add_component_ref plus bogus error message

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45795

--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2010-09-25 21:21:19 UTC ---
It is very likely a duplicate of pr45783.

[Bug fortran/45795] [OOP] ICE in in gfc_add_component_ref plus bogus error message

[sfilippone at uniroma2 dot it]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45795

--- Comment #3 from Salvatore Filippone <sfilippone at uniroma2 dot it> 2010-09-26 07:33:13 UTC ---
(In reply to comment #2)
> It is very likely a duplicate of pr45783.

The code compiles at r164549

[Bug fortran/45795] [OOP] ICE in in gfc_add_component_ref plus bogus error message

[sfilippone at uniroma2 dot it]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45795

--- Comment #4 from Salvatore Filippone <sfilippone at uniroma2 dot it> 2010-09-26 07:43:51 UTC ---
(In reply to comment #3)
> (In reply to comment #2)
> > It is very likely a duplicate of pr45783.
> 
> The code compiles at r164549

and fails at r164550....

[Bug fortran/45795] [OOP] ICE in in gfc_add_component_ref plus bogus error message

[domob at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45795

Daniel Kraft <domob at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2010.09.26 08:04:08
               date|                            |
                 CC|                            |domob at gcc dot gnu.org
         AssignedTo|unassigned at gcc dot       |domob at gcc dot gnu.org
                   |gnu.org                     |
     Ever Confirmed|0                           |1

--- Comment #5 from Daniel Kraft <domob at gcc dot gnu.org> 2010-09-26 08:04:08 UTC ---
Confirmed.  I do not yet see how this is related to my commit, but will look
into it of course.  Thanks for the report!

[Bug fortran/45795] [OOP] ICE in in gfc_add_component_ref plus bogus error message

[sfilippone at uniroma2 dot it]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45795

--- Comment #6 from Salvatore Filippone <sfilippone at uniroma2 dot it> 2010-09-26 10:27:41 UTC ---
(In reply to comment #5)
> Confirmed.  I do not yet see how this is related to my commit, but will look
> into it of course.  Thanks for the report!
Well, considering how many times I have been burned by things that "should not
have anything to do with", it was relatively easy to home in onto the only
change in recent days that had touched SELECT TYPE :-) 

As I read somewhere "Interesting problems prove their worth by biting back"
Salvatore

[Bug fortran/45795] [OOP] ICE in in gfc_add_component_ref plus bogus error message

[domob at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45795

--- Comment #7 from Daniel Kraft <domob at gcc dot gnu.org> 2010-09-26 19:25:55 UTC ---
Author: domob
Date: Sun Sep 26 19:25:52 2010
New Revision: 164638

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=164638
Log:
2010-09-26  Daniel Kraft  <d@domob.eu>

    PR fortran/45783
    PR fortran/45795
    * resolve.c (resolve_select_type): Clarify code.
    (resolve_assoc_var): Only set typespec if it is currently unknown.

2010-09-26  Daniel Kraft  <d@domob.eu>

    PR fortran/45783
    PR fortran/45795
    * gfortran.dg/select_type_18.f03: New test.

Added:
    trunk/gcc/testsuite/gfortran.dg/select_type_18.f03
Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/resolve.c
    trunk/gcc/testsuite/ChangeLog

[Bug fortran/45795] [OOP] ICE in in gfc_add_component_ref plus bogus error message

[domob at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45795

Daniel Kraft <domob at gcc dot gnu.org> changed:

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

--- Comment #8 from Daniel Kraft <domob at gcc dot gnu.org> 2010-09-26 19:32:37 UTC ---
Fixed.