https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99849
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
There's a backtrace:
(gdb) p exp
$1 = (tree) 0x7ffff77ddea0
(gdb) p debug_tree(exp)
<compound_literal_expr 0x7ffff77ddea0
type <record_type 0x7ffff73e0930 uverbs_obj_idr_type readonly DI
size <integer_cst 0x7ffff75e1bb8 constant 64>
unit-size <integer_cst 0x7ffff75e1bd0 constant 8>
align:64 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff73e0d20
fields <field_decl 0x7ffff73e34c0 type type <record_type 0x7ffff73e0c78
uverbs_obj_type>
DI a.i:14:26 size <integer_cst 0x7ffff75e1bb8 64> unit-size
<integer_cst 0x7ffff75e1bd0 8>
align:64 warn_if_not_align:0 offset_align 128
offset <integer_cst 0x7ffff75e1be8 constant 0>
bit-offset <integer_cst 0x7ffff75e1c30 constant 0> context
<record_type 0x7ffff73e0888 uverbs_obj_idr_type>> context
<translation_unit_decl 0x7ffff75ec168 a.i>
pointer_to_this <pointer_type 0x7ffff73e8000>>
side-effects addressable
arg:0 <decl_expr 0x7ffff77dde80
type <void_type 0x7ffff75f6f18 void VOID
align:8 warn_if_not_align:0 symtab:0 alias-set -1
structural-equality
pointer_to_this <pointer_type 0x7ffff75fd000>>
side-effects
arg:0 <var_decl 0x7ffff73e7000 __compound_literal.0 type <record_type
0x7ffff73e0930 uverbs_obj_idr_type>
readonly addressable public ignored external DI a.i:26:42 size
<integer_cst 0x7ffff75e1bb8 64> unit-size <integer_cst 0x7ffff75e1bd0 8>
align:64 warn_if_not_align:0 context <translation_unit_decl
0x7ffff75ec168 a.i> initial <constructor 0x7ffff73d7978>
(mem/u/c:DI (symbol_ref:DI ("__compound_literal.0.lto_priv.0")
[flags 0x42] <var_decl 0x7ffff73e7000 __compound_literal.0>) [7
__compound_literal.0+0 S8 A64])>
a.i:26:42 start: a.i:26:42 finish: a.i:26:42>
a.i:26:71 start: a.i:26:71 finish: a.i:26:71>
$2 = void
(gdb) bt
#0 expand_expr_real_1 (exp=0x7ffff77ddea0, target=0x0, tmode=E_DImode,
modifier=EXPAND_INITIALIZER, alt_rtl=0x0, inner_reference_p=false) at
/home/marxin/Programming/gcc/gcc/expr.c:11556
#1 0x00000000009e9a73 in expand_expr_real (exp=0x7ffff77ddea0, target=0x0,
tmode=E_DImode, modifier=EXPAND_INITIALIZER, alt_rtl=0x0,
inner_reference_p=false) at /home/marxin/Programming/gcc/gcc/expr.c:8519
#2 0x00000000009c5d42 in expand_expr (exp=0x7ffff77ddea0, target=0x0,
mode=E_DImode, modifier=EXPAND_INITIALIZER) at
/home/marxin/Programming/gcc/gcc/expr.h:282
#3 0x00000000009e8aa2 in expand_expr_addr_expr_1 (exp=0x7ffff77ddea0,
target=0x0, tmode=..., modifier=EXPAND_INITIALIZER, as=0 '\000') at
/home/marxin/Programming/gcc/gcc/expr.c:8223
#4 0x00000000009e8fc0 in expand_expr_addr_expr_1 (exp=0x7ffff73fe7b0,
target=0x0, tmode=..., modifier=EXPAND_INITIALIZER, as=0 '\000') at
/home/marxin/Programming/gcc/gcc/expr.c:8269
#5 0x00000000009e94e1 in expand_expr_addr_expr (exp=0x7ffff77ddec0,
target=0x0, tmode=E_DImode, modifier=EXPAND_INITIALIZER) at
/home/marxin/Programming/gcc/gcc/expr.c:8344
#6 0x00000000009f88ed in expand_expr_real_1 (exp=0x7ffff77ddec0, target=0x0,
tmode=E_VOIDmode, modifier=EXPAND_INITIALIZER, alt_rtl=0x0,
inner_reference_p=false) at /home/marxin/Programming/gcc/gcc/expr.c:11513
#7 0x00000000009e9a73 in expand_expr_real (exp=0x7ffff77ddec0, target=0x0,
tmode=E_VOIDmode, modifier=EXPAND_INITIALIZER, alt_rtl=0x0,
inner_reference_p=false) at /home/marxin/Programming/gcc/gcc/expr.c:8519
#8 0x00000000010b3dcc in expand_expr (modifier=EXPAND_INITIALIZER,
mode=E_VOIDmode, target=0x0, exp=0x7ffff77ddec0) at
/home/marxin/Programming/gcc/gcc/expr.h:282
#9 output_constant (exp=0x7ffff77ddec0, size=8, align=64, reverse=<optimized
out>, merge_strings=<optimized out>) at
/home/marxin/Programming/gcc/gcc/varasm.c:5240
#10 0x00000000010b2e1e in output_constant (merge_strings=false, reverse=false,
align=64, size=<optimized out>, exp=0x7ffff77ddec0) at
/home/marxin/Programming/gcc/gcc/varasm.c:5529
#11 output_constructor_regular_field (local=<synthetic pointer>) at
/home/marxin/Programming/gcc/gcc/varasm.c:5529
#12 output_constructor (exp=0x7ffff74022e8, size=8, align=64,
reverse=<optimized out>, outer=0x0) at
/home/marxin/Programming/gcc/gcc/varasm.c:5796
#13 0x00000000010b4804 in output_constant (merge_strings=false, reverse=false,
align=64, size=<optimized out>, exp=<optimized out>) at
/home/marxin/Programming/gcc/gcc/varasm.c:5148
#14 assemble_variable_contents (decl=0x7ffff7fbef30, name=<optimized out>,
dont_output_data=<optimized out>, merge_strings=<optimized out>) at
/home/marxin/Programming/gcc/gcc/varasm.c:2211
#15 0x00000000010ba145 in assemble_variable (decl=0x7ffff7fbef30,
top_level=<optimized out>, at_end=<optimized out>, dont_output_data=0) at
/home/marxin/Programming/gcc/gcc/varasm.c:2390
#16 0x00000000010bde4a in varpool_node::assemble_decl (this=0x7ffff73eb380) at
/home/marxin/Programming/gcc/gcc/varpool.c:595
#17 varpool_node::assemble_decl (this=0x7ffff73eb380) at
/home/marxin/Programming/gcc/gcc/varpool.c:563
#18 0x00000000010be971 in symbol_table::output_variables
(this=this@entry=0x7ffff75e5000) at
/home/marxin/Programming/gcc/gcc/varpool.c:761
#19 0x00000000008ede77 in symbol_table::compile (this=<optimized out>) at
/home/marxin/Programming/gcc/gcc/cgraphunit.c:2361
#20 symbol_table::compile (this=<optimized out>) at
/home/marxin/Programming/gcc/gcc/cgraphunit.c:2269
#21 0x0000000000836bc5 in lto_main () at
/home/marxin/Programming/gcc/gcc/lto/lto.c:653
#22 0x0000000000d7076e in compile_file () at
/home/marxin/Programming/gcc/gcc/toplev.c:457
#23 0x000000000080e537 in do_compile () at
/home/marxin/Programming/gcc/gcc/toplev.c:2201
#24 toplev::main (this=this@entry=0x7fffffffdcee, argc=<optimized out>,
argc@entry=18, argv=<optimized out>, argv@entry=0x7fffffffddf8) at
/home/marxin/Programming/gcc/gcc/toplev.c:2340
#25 0x0000000000811105 in main (argc=18, argv=0x7fffffffddf8) at
/home/marxin/Programming/gcc/gcc/main.c:39
