[Bug lto/45959] New: [4.6 Regression] ICE: tree code 'template_type_parm' is not supported in gimple streams with -flto/-fwhopr

[Bug lto/45959] New: [4.6 Regression] ICE: tree code 'template_type_parm' is not supported in gimple streams with -flto/-fwhopr

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45959

           Summary: [4.6 Regression] ICE: tree code 'template_type_parm'
                    is not supported in gimple streams with -flto/-fwhopr
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz


Created attachment 22011
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22011
testcase

Compiler output:
$ gcc -flto testcase.C
testcase.C:106:1: internal compiler error: tree code 'template_type_parm' is
not supported in gimple streams
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r165241 - crash
r165220 - crash
r165152 - OK

[Bug lto/45959] [4.6 Regression] ICE: tree code 'template_type_parm' is not supported in gimple streams with -flto/-fwhopr

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45959

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2010.10.10 11:29:26
         AssignedTo|unassigned at gcc dot       |rguenth at gcc dot gnu.org
                   |gnu.org                     |
     Ever Confirmed|0                           |1

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-10-10 11:29:26 UTC ---
We are writing DECL_CONTEXT of a TYPE_DECL which is a RECORD_TYPE which
is not instantiated.

We should probably simply clear all fields of RECORD_TYPEs which are
"incomplete" this way.

A more radical approach would be to do for TYPE_FIELDS what we do now
for BLOCK_SUBBLOCKS and BLOCK_VARS - write them lazily (but given that
they are possibly shared between multiple instances of RECORD_TYPEs
re-constructing the field list isn't really possible).

I have a patch.

[Bug lto/45959] [4.6 Regression] ICE: tree code 'template_type_parm' is not supported in gimple streams with -flto/-fwhopr

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45959

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-10-10 11:30:16 UTC ---
*** Bug 45960 has been marked as a duplicate of this bug. ***

[Bug lto/45959] [4.6 Regression] ICE: tree code 'template_type_parm' is not supported in gimple streams with -flto/-fwhopr

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45959

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jason at gcc dot gnu.org
         AssignedTo|rguenth at gcc dot gnu.org  |jason at gcc dot gnu.org

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> 2010-10-10 20:11:01 UTC ---
Mine.

[Bug lto/45959] [4.6 Regression] ICE: tree code 'template_type_parm' is not supported in gimple streams with -flto/-fwhopr

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45959

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> 2010-10-11 13:25:45 UTC ---
Author: jason
Date: Mon Oct 11 13:25:37 2010
New Revision: 165306

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=165306
Log:
    PR lto/45959
    PR lto/45960
    * pt.c (tsubst_copy) [INTEGER_CST]: Instantiate the type.

Added:
    trunk/gcc/testsuite/g++.dg/lto/20101010-1_0.C
    trunk/gcc/testsuite/g++.dg/lto/20101010-2_0.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/pt.c
    trunk/gcc/testsuite/ChangeLog

[Bug lto/45959] [4.6 Regression] ICE: tree code 'template_type_parm' is not supported in gimple streams with -flto/-fwhopr

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45959

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
                 CC|                            |rguenth at gcc dot gnu.org
         Resolution|                            |FIXED

--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> 2010-10-11 13:30:16 UTC ---
Fixed.

[Bug lto/45959] [4.6 Regression] ICE: tree code 'template_type_parm' is not supported in gimple streams with -flto/-fwhopr

[scovich at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45959

Ryan Johnson <scovich at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |scovich at gmail dot com

--- Comment #6 from Ryan Johnson <scovich at gmail dot com> 2010-10-11 13:53:42 UTC ---
Actually, this isn't a regression -- not on 4.6, at least. The following
minimal test case makes x86_64-unknown-linux-gnu-gcc-4.5.1 die with the same
error message:

$ cat > lto-bug.h <<EOF
#pragma interface
template<class T> struct foo;
template<class T>
struct foo<T*&> : foo<T&> {
    foo<T*&>(T* t) : foo<T&>(*t) { }
};
EOF

$ cat > lto-bug.C <<EOF
#pragma implementation "lto-bug.h"
#include "lto-bug.h"
EOF

$ gcc-4.5.1 -flto lto-bug.C
In file included from lto-bug.C:2:0:
lto-bug.h:6:2: internal compiler error: tree code ‘template_type_parm’ is not
supported in gimple streams
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Removing anything at all makes the ICE disappear

I don't have a copy of the 4.6 sources to test whether the just checked-in fix
takes care of this... reopen?

[Bug lto/45959] [4.6 Regression] ICE: tree code 'template_type_parm' is not supported in gimple streams with -flto/-fwhopr

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45959

--- Comment #7 from Jason Merrill <jason at gcc dot gnu.org> 2010-10-11 16:49:52 UTC ---
(In reply to comment #6)
> #pragma interface
> template<class T> struct foo;
> template<class T>
> struct foo<T*&> : foo<T&> {
>     foo<T*&>(T* t) : foo<T&>(*t) { }
> };

This looks like a different bug that just produces the same error message. 
This testcase works fine with pre-4.6, and is not fixed in 4.5 by the patch for
45959.

[Bug lto/45959] [4.6 Regression] ICE: tree code 'template_type_parm' is not supported in gimple streams with -flto/-fwhopr

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=45959

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.6.0