http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50394
Jan Hubicka <hubicka at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mjambor at suse dot cz --- Comment #7 from Jan Hubicka <hubicka at gcc dot gnu.org> 2011-09-16 09:59:47 UTC --- OK, the error is ipa-cp trying to fold ctor reference as: #1 0x00000000005d2fee in fold_ctor_reference (type=0x7ffff53501f8, ctor=0x7ffff7ec0b10, offset=1088, size=64) at ../../gcc/gimple-fold.c:2880 2880 if (useless_type_conversion_p (type, TREE_TYPE (ctor)) (gdb) p debug_tree (type) <pointer_type 0x7ffff53501f8 __vtbl_ptr_type type <function_type 0x7ffff53502a0 type <integer_type 0x7ffff7ec95e8 int public SI size <integer_cst 0x7ffff7ecc240 constant 32> unit size <integer_cst 0x7ffff7ecc260 constant 4> align 32 symtab 0 alias set 5 canonical type 0x7ffff7ec95e8 precision 32 min <integer_cst 0x7ffff7ecc1e0 -2147483648> max <integer_cst 0x7ffff7ecc200 2147483647> pointer_to_this <pointer_type 0x7ffff7ed72a0> reference_to_this <reference_type 0x7ffff1c7c930>> QI size <integer_cst 0x7ffff7ecc080 constant 8> unit size <integer_cst 0x7ffff7ecc0a0 constant 1> align 8 symtab 0 alias set -1 canonical type 0x7ffff53502a0 pointer_to_this <pointer_type 0x7ffff53501f8 __vtbl_ptr_type>> public unsigned DI size <integer_cst 0x7ffff7eb9ec0 type <integer_type 0x7ffff7ec90a8 bitsizetype> constant 64> unit size <integer_cst 0x7ffff7eb9ee0 type <integer_type 0x7ffff7ec9000 sizetype> constant 8> align 64 symtab 0 alias set -1 canonical type 0x7ffff53591f8 pointer_to_this <pointer_type 0x7ffff5350150>> $2 = void (gdb) p debug_tree (ctor) <error_mark 0x7ffff7ec0b10> $3 = void (gdb) bt #0 useless_type_conversion_p (outer_type=0x7ffff53501f8, inner_type=0x66686e6973615f6e) at ../../gcc/tree-ssa.c:1292 #1 0x00000000005d2fee in fold_ctor_reference (type=0x7ffff53501f8, ctor=0x7ffff7ec0b10, offset=1088, size=64) at ../../gcc/gimple-fold.c:2880 #2 0x00000000005d3a6e in gimple_get_virt_method_for_binfo (token=960, known_binfo=<optimized out>) at ../../gcc/gimple-fold.c:3056 #3 0x0000000000ae4cce in devirtualization_time_bonus (node=<optimized out>, known_csts=0x3622de0, known_binfos=0x3622d80) at ../../gcc/ipa-cp.c:1170 #4 0x0000000000ae8b8c in estimate_local_effects (node=<optimized out>) at ../../gcc/ipa-cp.c:1401 #5 propagate_constants_topo (topo=<optimized out>) at ../../gcc/ipa-cp.c:1548 #6 ipcp_propagate_stage (topo=<optimized out>) at ../../gcc/ipa-cp.c:1631 #7 ipcp_driver () at ../../gcc/ipa-cp.c:2434 #8 0x00000000006710a7 in execute_one_pass (pass=0x10916e0) at ../../gcc/passes.c:2063 #9 0x0000000000671876 in execute_ipa_pass_list (pass=0x10916e0) at ../../gcc/passes.c:2430 #10 0x00000000004ab3c4 in do_whole_program_analysis () at ../../gcc/lto/lto.c:2670 #11 0x00000000004adf6d in lto_main () at ../../gcc/lto/lto.c:2796 #12 0x0000000000704a32 in compile_file () at ../../gcc/toplev.c:548 #13 do_compile () at ../../gcc/toplev.c:1886 #14 toplev_main (argc=171, argv=0x11fe290) at ../../gcc/toplev.c:1962 #15 0x00007ffff63efbc6 in __libc_start_main () from /lib64/libc.so.6 #16 0x00000000004909e9 in _start () at ../sysdeps/x86_64/elf/start.S:113 Martin, is this optimized out binfo? I will try to reduce this mess, but it is huge, as you could expect