https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100229
Bug ID: 100229
Summary: arm: UB in arm_block_set_aligned_non_vect (shift
exponent 32 is too large for 32-bit type)
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: acoplan at gcc dot gnu.org
Target Milestone: ---
$ cat test.c
int a[1];
__attribute((always_inline)) void g(void *c, int d, int e) {
__builtin_memset(c, d, e);
}
void f() { g(a, 0, 0); }
$ gcc/xgcc -B gcc -c test.c -ftree-ter
test.c:2:35: warning: ‘always_inline’ function might not be inlinable
[-Wattributes]
2 | __attribute((always_inline)) void g(void *c, int d, int e) {
| ^
/data_sdb/toolchain/src/gcc/gcc/config/arm/arm.c:32358:22: runtime error: shift
exponent 32 is too large for 32-bit type 'unsigned int'
#0 0x2427a05 in arm_block_set_aligned_non_vect(rtx_def*, unsigned long,
unsigned long, unsigned long)
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0x2427a05)
#1 0x2428ce6 in arm_gen_setmem(rtx_def**)
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0x2428ce6)
#2 0x2c32189 in gen_setmemsi(rtx_def*, rtx_def*, rtx_def*, rtx_def*)
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0x2c32189)
#3 0x16ddcf1 in rtx_insn* insn_gen_fn::operator()<rtx_def*, rtx_def*,
rtx_def*, rtx_def*>(rtx_def*, rtx_def*, rtx_def*, rtx_def*) const
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0x16ddcf1)
#4 0x16dcd35 in maybe_gen_insn(insn_code, unsigned int, expand_operand*)
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0x16dcd35)
#5 0x16dd513 in maybe_expand_insn(insn_code, unsigned int, expand_operand*)
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0x16dd513)
#6 0x10561d0 in set_storage_via_setmem(rtx_def*, rtx_def*, rtx_def*,
unsigned int, unsigned int, long, unsigned long, unsigned long, unsigned long)
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0x10561d0)
#7 0xc7df36 in expand_builtin_memset_args(tree_node*, tree_node*,
tree_node*, rtx_def*, machine_mode, tree_node*)
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0xc7df36)
#8 0xc7db6f in expand_builtin_memset(tree_node*, rtx_def*, machine_mode)
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0xc7db6f)
#9 0xc8ccc8 in expand_builtin(tree_node*, rtx_def*, rtx_def*, machine_mode,
int) (/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0xc8ccc8)
#10 0x108ff58 in expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0x108ff58)
#11 0x1079c93 in expand_expr_real(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0x1079c93)
#12 0xd0c350 in expand_expr(tree_node*, rtx_def*, machine_mode,
expand_modifier) (/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0xd0c350)
#13 0xd1b56d in expand_call_stmt(gcall*)
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0xd1b56d)
#14 0xd211e3 in expand_gimple_stmt_1(gimple*)
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0xd211e3)
#15 0xd21b56 in expand_gimple_stmt(gimple*)
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0xd21b56)
#16 0xd32062 in expand_gimple_basic_block(basic_block_def*, bool)
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0xd32062)
#17 0xd35db8 in (anonymous namespace)::pass_expand::execute(function*)
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0xd35db8)
#18 0x17d2355 in execute_one_pass(opt_pass*)
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0x17d2355)
#19 0x17d2b6e in execute_pass_list_1(opt_pass*)
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0x17d2b6e)
#20 0x17d2c65 in execute_pass_list(function*, opt_pass*)
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0x17d2c65)
#21 0xdf27ac in cgraph_node::expand()
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0xdf27ac)
#22 0xdf3a23 in cgraph_order_sort::process()
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0xdf3a23)
#23 0xdf4135 in output_in_order()
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0xdf4135)
#24 0xdf4e01 in symbol_table::compile()
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0xdf4e01)
#25 0xdf55ea in symbol_table::finalize_compilation_unit()
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0xdf55ea)
#26 0x1ac3baa in compile_file()
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0x1ac3baa)
#27 0x1ac8a15 in do_compile()
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0x1ac8a15)
#28 0x1ac8f10 in toplev::main(int, char**)
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0x1ac8f10)
#29 0x36a5ee7 in main
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0x36a5ee7)
#30 0x7ffff5ca1bf6 in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x21bf6)
#31 0x980249 in _start
(/data_sdb/toolchain/cc1s/ubsan-arm/gcc/cc1+0x980249)
