[Bug c++/44561] New: using nullptr_t with -flto/-fwhopr causes ICE: tree code 'lang_type' is not supported in gimple streams

[Bug c++/44561] New: using nullptr_t with -flto/-fwhopr causes ICE: tree code 'lang_type' is not supported in gimple streams

[zsojka at seznam dot cz]

Command line:
$ g++ -std=gnu++0x -flto testcase.C
testcase.C:2:12: internal compiler error: tree code 'lang_type' is not
supported in gimple streams

-------- testcase.C --------
typedef decltype(nullptr) nullptr_t;
nullptr_t a;
----------------------------

Tested revisions:
r160687 - crash
r159696 - crash
r159387 - crash
r158969 - nullptr is not recognized

The problem is that almost any code using C++0x mode fails to compile with
-flto -fkeep-inline-functions.


-- 
           Summary: using nullptr_t with -flto/-fwhopr causes ICE: tree code
                    'lang_type' is not supported in gimple streams
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: zsojka at seznam dot cz


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44561

[Bug c++/44561] using nullptr_t with -flto/-fwhopr causes ICE: tree code 'lang_type' is not supported in gimple streams

[rguenth at gcc dot gnu dot org]

------- Comment #1 from rguenth at gcc dot gnu dot org  2010-06-16 20:39 -------
Confirmed.

It isn't valid for LANG_TYPE node to leak to the middle-end.

gdb) call debug_tree (expr)
 <lang_type 0xb77a3180 nullptr_t unsigned SI
    size <integer_cst 0xb7722288 type <integer_type 0xb7739060 bit_size_type>
constant 32>
    unit size <integer_cst 0xb77220c0 type <integer_type 0xb7739000 unsigned
int> constant 4>
    align 8 symtab 0 alias set -1 canonical type 0xb7799000>


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jason at gcc dot gnu dot org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2010-06-16 20:39:38
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44561