[Bug c++/43313] ICE with non-POD and covariant return thunks

[bergner at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43313



--- Comment #7 from Peter Bergner <bergner at gcc dot gnu.org> 2012-11-07 
23:33:54 UTC ---

Backtrace:



#0  fancy_abort (file=0x113d6b90

"/home/bergner/gcc/gcc-fsf-mainline-base/gcc/expr.c", line=7597, 

    function=0x113d7158 <expand_expr_addr_expr_1(tree_node*, rtx_def*,

machine_mode, expand_modifier, unsigned char)::__FUNCTION__>

"expand_expr_addr_expr_1")

    at /home/bergner/gcc/gcc-fsf-mainline-base/gcc/diagnostic.c:1143

#1  0x000000001066f4e0 in expand_expr_addr_expr_1 (exp=0xfffb5cd1700,

target=0x0, tmode=SImode, 

    modifier=EXPAND_NORMAL, as=0 '\000') at

/home/bergner/gcc/gcc-fsf-mainline-base/gcc/expr.c:7597

#2  0x000000001066fdd4 in expand_expr_addr_expr (exp=0xfffb5a962e0, target=0x0,

tmode=SImode, 

    modifier=EXPAND_NORMAL) at

/home/bergner/gcc/gcc-fsf-mainline-base/gcc/expr.c:7706

#3  0x000000001066b0dc in expand_expr_real_1 (exp=0xfffb5a962e0, target=0x0,

tmode=VOIDmode, 

    modifier=EXPAND_NORMAL, alt_rtl=0x0) at

/home/bergner/gcc/gcc-fsf-mainline-base/gcc/expr.c:10386

#4  0x000000001066b328 in expand_expr_real (exp=0xfffb5a962e0, target=0x0,

tmode=VOIDmode, 

    modifier=EXPAND_NORMAL, alt_rtl=0x0) at

/home/bergner/gcc/gcc-fsf-mainline-base/gcc/expr.c:7866

#5  0x00000000104d8084 in expand_normal (exp=0xfffb5a962e0)

    at /home/bergner/gcc/gcc-fsf-mainline-base/gcc/expr.h:450

...





(gdb) p DECL_P (exp)

$22 = true

(gdb) p TREE_ADDRESSABLE (exp)

$23 = 1

(gdb) p ! MEM_P (result)

$24 = true

(gdb) p ! targetm.calls.allocate_stack_slots_for_args()

$25 = false

(gdb) ptree exp

 <parm_decl 0xfffb5cd1700 PidIndex

    type <record_type 0xfffb5c2fb58 CRemapPidIndex type_5 QI

        size <integer_cst 0xfffb5a92540 constant 8>

        unit size <integer_cst 0xfffb5a92560 constant 1>

        align 8 symtab 0 alias set -1 canonical type 0xfffb5c2fb58

        fields <type_decl 0xfffb5b94b78 CRemapPidIndex type <record_type

0xfffb5c2fdf8 CRemapPidIndex>

            nonlocal decl_4 VOID file foo.ii line 4 col 67

            align 1 context <record_type 0xfffb5c2fb58 CRemapPidIndex> result

<record_type 0xfffb5c2fb58 CRemapPidIndex>

           > context <translation_unit_decl 0xfffb5b90170 D.1>

        full-name "class CRemapPidIndex"

        X() X(constX&) this=(X&) n_parents=1 use_template=0 interface-unknown

        pointer_to_this <pointer_type 0xfffb5cc4398> chain <type_decl

0xfffb5b94898 CRemapPidIndex>>

    addressable used QI file foo.ii line 18 col 53 size <integer_cst

0xfffb5a92540 8> unit size <integer_cst 0xfffb5a92560 1>

    align 8 context <function_decl 0xfffb5c7f400

_ZTch0_h4_N8CPlayout14CreateCarouselE14CRemapPidIndex>



    (reg/v:QI 125 [ PidIndex ]) arg-type <record_type 0xfffb5c2fb58

CRemapPidIndex>

    incoming-rtl (mem:QI (reg:SI 4 4) [0 S1 A8])>