https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72808
Bug ID: 72808
Summary: [6/7 Regression] ICE on valid c++ code in verify_type
(gcc/tree.c:14047)
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
Target Milestone: ---
I've just isolated following snippet from Firefox master:
typedef int uint32_t;
class A
{
virtual void m_fn1 ();
};
class B : A
{
void m_fn1 ();
enum TrackCommands : uint32_t;
};
enum B::TrackCommands : uint32_t
{
TRACK_EVENT_UNUSED
};
void
B::m_fn1 ()
{
}
$ g++ reduced.ii -g
reduced.ii:18:1: error: type variant has different TYPE_FIELDS
}
^
<record_type 0x7f274761b000 B addressable asm_written tree_2
needs-constructing type_5 type_6 BLK
size <integer_cst 0x7f27474aae58 type <integer_type 0x7f27474ae2a0
bitsizetype> constant 64>
unit size <integer_cst 0x7f27474aae70 type <integer_type 0x7f27474ae1f8
sizetype> constant 8>
align 64 symtab 1196241216 alias set -1 canonical type 0x7f274761b000
fields <const_decl 0x7f27474c62a0 TRACK_EVENT_UNUSED
type <enumeral_type 0x7f274761b3f0 TrackCommands type <integer_type
0x7f2747612c78 uint32_t>
asm_written type_5 SI
size <integer_cst 0x7f27474cb0a8 constant 32>
unit size <integer_cst 0x7f27474cb0c0 constant 4>
align 32 symtab 1196241296 alias set -1 canonical type
0x7f274761b3f0 precision 32 min <integer_cst 0x7f27474cb060 -2147483648> max
<integer_cst 0x7f27474cb078 2147483647>
values <tree_list 0x7f2747609eb0
purpose <identifier_node 0x7f2747614528 TRACK_EVENT_UNUSED
bindings <(nil)>
local bindings <(nil)>> value <const_decl 0x7f27474c62a0
TRACK_EVENT_UNUSED>> context <record_type 0x7f274761b000 B>
chain <type_decl 0x7f2747613850 TrackCommands>>
readonly constant private VOID file reduced.ii line 13 col 3
align 1 context <enumeral_type 0x7f274761b3f0 TrackCommands> initial
<integer_cst 0x7f27475ffa08 0>
chain <field_decl 0x7f27476138e8 D.2261 type <record_type
0x7f2747612e70 A>
ignored decl_6 BLK file reduced.ii line 6 col 7 size <integer_cst
0x7f27474aae58 64> unit size <integer_cst 0x7f27474aae70 8>
align 64 offset_align 128
offset <integer_cst 0x7f27474aae88 constant 0>
bit offset <integer_cst 0x7f27474aaed0 constant 0> context
<record_type 0x7f274761b000 B> chain <type_decl 0x7f27476137b8 B>>> context
<translation_unit_decl 0x7f27474b6168 D.1>
full-name "class B"
needs-constructor X() X(constX&) this=(X&) n_parents=1 use_template=0
pointer_to_this <pointer_type 0x7f274761b2a0> chain <type_decl
0x7f2747613720 B>>
reduced.ii:18:1: error: first mismatch is field
<field_decl 0x7f27476138e8 D.2261
type <record_type 0x7f2747612e70 A addressable tree_2 needs-constructing
type_5 type_6 BLK
size <integer_cst 0x7f27474aae58 constant 64>
unit size <integer_cst 0x7f27474aae70 constant 8>
align 64 symtab 1196241536 alias set -1 canonical type 0x7f2747612e70
fields <field_decl 0x7f2747613558 _vptr.A type <pointer_type
0x7f274760e498>
unsigned virtual DI file reduced.ii line 2 col 7 size <integer_cst
0x7f27474aae58 64> unit size <integer_cst 0x7f27474aae70 8>
align 64 offset_align 128
offset <integer_cst 0x7f27474aae88 constant 0>
bit offset <integer_cst 0x7f27474aaed0 constant 0> context
<record_type 0x7f2747612e70 A> chain <type_decl 0x7f27476134c0 A>> context
<translation_unit_decl 0x7f27474b6168 D.1>
full-name "class A"
needs-constructor X() X(constX&) this=(X&) n_parents=0 use_template=0
interface-unknown
pointer_to_this <pointer_type 0x7f2747612888> chain <type_decl
0x7f2747613428 A>>
ignored decl_6 BLK file reduced.ii line 6 col 7 size <integer_cst
0x7f27474aae58 64> unit size <integer_cst 0x7f27474aae70 8>
align 64 offset_align 128 offset <integer_cst 0x7f27474aae88 0> bit offset
<integer_cst 0x7f27474aaed0 0> context <record_type 0x7f274761b000 B> chain
<type_decl 0x7f27476137b8 B>>
reduced.ii:18:1: error: and field
<const_decl 0x7f27474c62a0 TRACK_EVENT_UNUSED
type <enumeral_type 0x7f274761b3f0 TrackCommands
type <integer_type 0x7f2747612c78 uint32_t public type_6 SI
size <integer_cst 0x7f27474cb0a8 constant 32>
unit size <integer_cst 0x7f27474cb0c0 constant 4>
align 32 symtab 1196240976 alias set -1 canonical type
0x7f27474ae7e0 precision 32 min <integer_cst 0x7f27474cb060 -2147483648> max
<integer_cst 0x7f27474cb078 2147483647>>
asm_written type_5 SI size <integer_cst 0x7f27474cb0a8 32> unit size
<integer_cst 0x7f27474cb0c0 4>
align 32 symtab 1196241296 alias set -1 canonical type 0x7f274761b3f0
precision 32 min <integer_cst 0x7f27474cb060 -2147483648> max <integer_cst
0x7f27474cb078 2147483647>
values <tree_list 0x7f2747609eb0
purpose <identifier_node 0x7f2747614528 TRACK_EVENT_UNUSED
bindings <(nil)>
local bindings <(nil)>> value <const_decl 0x7f27474c62a0
TRACK_EVENT_UNUSED>> context <record_type 0x7f274761b000 B>
chain <type_decl 0x7f2747613850 TrackCommands>>
readonly constant private VOID file reduced.ii line 13 col 3
align 1 context <enumeral_type 0x7f274761b3f0 TrackCommands> initial
<integer_cst 0x7f27475ffa08 0> chain <field_decl 0x7f27476138e8 D.2261>>
<record_type 0x7f274761b0a8 B addressable tree_2 needs-constructing type_5 BLK
size <integer_cst 0x7f27474aae58 type <integer_type 0x7f27474ae2a0
bitsizetype> constant 64>
unit size <integer_cst 0x7f27474aae70 type <integer_type 0x7f27474ae1f8
sizetype> constant 8>
align 64 symtab 0 alias set -1 canonical type 0x7f274761b000
fields <field_decl 0x7f27476138e8 D.2261
type <record_type 0x7f2747612e70 A addressable tree_2
needs-constructing type_5 type_6 BLK size <integer_cst 0x7f27474aae58 64> unit
size <integer_cst 0x7f27474aae70 8>
align 64 symtab 1196241536 alias set -1 canonical type
0x7f2747612e70 fields <field_decl 0x7f2747613558 _vptr.A> context
<translation_unit_decl 0x7f27474b6168 D.1>
full-name "class A"
needs-constructor X() X(constX&) this=(X&) n_parents=0
use_template=0 interface-unknown
pointer_to_this <pointer_type 0x7f2747612888> chain <type_decl
0x7f2747613428 A>>
ignored decl_6 BLK file reduced.ii line 6 col 7 size <integer_cst
0x7f27474aae58 64> unit size <integer_cst 0x7f27474aae70 8>
align 64 offset_align 128
offset <integer_cst 0x7f27474aae88 constant 0>
bit offset <integer_cst 0x7f27474aaed0 constant 0> context <record_type
0x7f274761b000 B>
chain <type_decl 0x7f27476137b8 B type <record_type 0x7f274761b0a8 B>
nonlocal decl_4 VOID file reduced.ii line 7 col 1
align 1 context <record_type 0x7f274761b000 B> result <record_type
0x7f274761b000 B>
chain <type_decl 0x7f2747613850 TrackCommands>>> context
<translation_unit_decl 0x7f27474b6168 D.1>
full-name "class B"
needs-constructor X() X(constX&) this=(X&) n_parents=1 use_template=0
chain <type_decl 0x7f2747613720 B>>
reduced.ii:18:1: internal compiler error: verify_type failed
0x10543d2 verify_type(tree_node const*)
../../gcc/tree.c:14047
0xa3c4fc gen_type_die_with_usage
../../gcc/dwarf2out.c:22712
0xa3d8b6 gen_type_die
../../gcc/dwarf2out.c:22910
0xa355b9 gen_decl_die
../../gcc/dwarf2out.c:23502
0xa44048 gen_member_die
../../gcc/dwarf2out.c:22381
0xa44048 gen_struct_or_union_type_die
../../gcc/dwarf2out.c:22487
0xa45566 gen_tagged_type_die
../../gcc/dwarf2out.c:22690
0xa3cb8c gen_type_die_with_usage
../../gcc/dwarf2out.c:22855
0xa3d8b6 gen_type_die
../../gcc/dwarf2out.c:22910
0xa355b9 gen_decl_die
../../gcc/dwarf2out.c:23502
0xa35fbe dwarf2out_decl
../../gcc/dwarf2out.c:23962
0xa4da1b dwarf2out_type_decl
../../gcc/dwarf2out.c:23672
0xcd019f rest_of_type_compilation(tree_node*, int)
../../gcc/passes.c:333
0x8052a5 note_debug_info_needed(tree_node*)
../../gcc/cp/search.c:2365
0x762d3e maybe_emit_vtables
../../gcc/cp/decl2.c:2135
0x763a88 c_parse_final_cleanups()
../../gcc/cp/decl2.c:4611
