[Bug c++/47303] New: [4.6 Regression] [C++0x] ICE: in varpool_node, at varpool.c:134 with -fabi-version=1

["zsojka at seznam dot cz" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47303

           Summary: [4.6 Regression] [C++0x] ICE: in varpool_node, at
                    varpool.c:134 with -fabi-version=1
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


Created attachment 22972
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22972
reduced testcase (from g++.dg/lookup/anon7.C)

Compiler output:
$ gcc -fabi-version=1 testcase.C 
testcase.C: In member function 'void F::xwrapper(int) [with void (Z::*
<anonymous>)(int) = &Z::cc]':
testcase.C:19:21:   instantiated from here
testcase.C:15:5: internal compiler error: in varpool_node, at varpool.c:134
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


(gdb) bt
#0  fancy_abort (file=0x12f6d78 "/mnt/svn/gcc-trunk/gcc/varpool.c", line=134,
function=0x12f6ee1 "varpool_node")
    at /mnt/svn/gcc-trunk/gcc/diagnostic.c:892
#1  0x0000000000c79047 in varpool_node (decl=0x7ffff7ee5500) at
/mnt/svn/gcc-trunk/gcc/varpool.c:133
#2  0x0000000000c7a1e5 in varpool_extra_name_alias (alias=0x7ffff7ee56e0,
decl=<value optimized out>)
    at /mnt/svn/gcc-trunk/gcc/varpool.c:664
#3  0x00000000005adc88 in finish_anon_union (anon_union_decl=0x7ffff7ee5500) at
/mnt/svn/gcc-trunk/gcc/cp/decl2.c:1412
#4  0x0000000000552d46 in tsubst_expr (t=<value optimized out>,
args=0x7ffff5d96258, complain=3, in_decl=0x7ffff5d93508, 
    integral_constant_expression_p=0 '\000') at
/mnt/svn/gcc-trunk/gcc/cp/pt.c:12005
#5  0x0000000000550fb5 in tsubst_expr (t=<value optimized out>,
args=0x7ffff5d96258, complain=3, in_decl=0x7ffff5d93508, 
    integral_constant_expression_p=0 '\000') at
/mnt/svn/gcc-trunk/gcc/cp/pt.c:11941
#6  0x0000000000550999 in tsubst_expr (t=0x7ffff5d6f800, args=0x7ffff5d96258,
complain=3, in_decl=0x7ffff5d93508, 
    integral_constant_expression_p=0 '\000') at
/mnt/svn/gcc-trunk/gcc/cp/pt.c:12120
#7  0x000000000057d932 in instantiate_decl (d=0x7ffff5d86600, defer_ok=<value
optimized out>, 
    expl_inst_class_mem_p=0 '\000') at /mnt/svn/gcc-trunk/gcc/cp/pt.c:17378
#8  0x0000000000584d44 in instantiate_pending_templates (retries=<value
optimized out>)
    at /mnt/svn/gcc-trunk/gcc/cp/pt.c:17475
#9  0x00000000005b3042 in cp_write_global_declarations () at
/mnt/svn/gcc-trunk/gcc/cp/decl2.c:3680
#10 0x0000000000a214b4 in compile_file (argc=14, argv=0x7fffffffdad8) at
/mnt/svn/gcc-trunk/gcc/toplev.c:591
#11 do_compile (argc=14, argv=0x7fffffffdad8) at
/mnt/svn/gcc-trunk/gcc/toplev.c:1874
#12 toplev_main (argc=14, argv=0x7fffffffdad8) at
/mnt/svn/gcc-trunk/gcc/toplev.c:1937
#13 0x00007ffff65f1bbd in __libc_start_main () from /lib/libc.so.6
#14 0x00000000004fa9d1 in _start ()


Tested revisions:
r168785 - crash
4.5 r168785 - OK
4.4 r168785 - OK