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Adds 'rustc fails to detect duplicate switch cases due to integer overrflow' ICE #3
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…rflow' ICE Reference: rust-lang/rust#13727
steveklabnik
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Oct 23, 2015
Adds 'rustc fails to detect duplicate switch cases due to integer overrflow' ICE
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Jul 29, 2021
=== stdout ===
DefId(0:7 ~ rust_out[6150]::{impl#0}::print):
Thir {
arms: [
Arm {
pattern: Pat {
ty: (&&str,),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
kind: Leaf {
subpatterns: [
FieldPat {
field: field[0],
pattern: Pat {
ty: &&str,
span: <anon>:6:49: 6:50 (#4),
kind: Binding {
mutability: Not,
name: "arg0",
mode: ByValue,
var: HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 29,
},
ty: &&str,
subpattern: None,
is_primary: true,
},
},
},
],
},
},
guard: None,
body: e36,
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 31,
},
),
scope: Node(31),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
},
Arm {
pattern: Pat {
ty: &Foo,
span: <anon>:6:13: 6:24 (#0),
kind: Deref {
subpattern: Pat {
ty: Foo,
span: <anon>:6:14: 6:24 (#0),
kind: Leaf {
subpatterns: [
FieldPat {
field: field[0],
pattern: Pat {
ty: str,
span: <anon>:6:18: 6:23 (#0),
kind: Binding {
mutability: Not,
name: "s",
mode: ByRef(
Shared,
),
var: HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 6,
},
ty: &str,
subpattern: None,
is_primary: true,
},
},
},
],
},
},
},
},
guard: None,
body: e50,
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 9,
},
),
scope: Node(9),
span: <anon>:6:13: 6:51 (#0),
},
],
exprs: [
Expr {
ty: &Foo,
temp_lifetime: Some(
Node(57),
),
span: <anon>:5:15: 5:19 (#0),
kind: VarRef {
id: HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 2,
},
},
},
Expr {
ty: &Foo,
temp_lifetime: Some(
Node(57),
),
span: <anon>:5:15: 5:19 (#0),
kind: Scope {
region_scope: Node(4),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 4,
},
),
value: e0,
},
},
Expr {
ty: for<'r> fn(std::fmt::Arguments<'r>) {std::io::_print},
temp_lifetime: Some(
Node(52),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:9: 98:27 (#3),
kind: Literal {
literal: Const {
ty: for<'r> fn(std::fmt::Arguments<'r>) {std::io::_print},
val: Value(
Scalar(
<ZST>,
),
),
},
user_ty: None,
const_id: None,
},
},
Expr {
ty: for<'r> fn(std::fmt::Arguments<'r>) {std::io::_print},
temp_lifetime: Some(
Node(52),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:9: 98:27 (#3),
kind: Scope {
region_scope: Node(13),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 13,
},
),
value: e2,
},
},
Expr {
ty: fn(&[&'static str], &[std::fmt::ArgumentV1]) -> std::fmt::Arguments {std::fmt::Arguments::new_v1},
temp_lifetime: Some(
Node(52),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
kind: Literal {
literal: Const {
ty: fn(&[&'static str], &[std::fmt::ArgumentV1]) -> std::fmt::Arguments {std::fmt::Arguments::new_v1},
val: Value(
Scalar(
<ZST>,
),
),
},
user_ty: Some(
Canonical {
max_universe: U0,
variables: [
CanonicalVarInfo {
kind: Region(
U0,
),
},
CanonicalVarInfo {
kind: Region(
U0,
),
},
],
value: TypeOf(
DefId(2:8955 ~ core[734c]::fmt::{impl#3}::new_v1),
UserSubsts {
substs: [
ReLateBound(DebruijnIndex(0), BoundRegion { var: 0, kind: BrAnon(0) }),
],
user_self_ty: Some(
UserSelfTy {
impl_def_id: DefId(2:8953 ~ core[734c]::fmt::{impl#3}),
self_ty: std::fmt::Arguments<'_>,
},
),
},
),
},
),
const_id: None,
},
},
Expr {
ty: fn(&[&'static str], &[std::fmt::ArgumentV1]) -> std::fmt::Arguments {std::fmt::Arguments::new_v1},
temp_lifetime: Some(
Node(52),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
kind: Scope {
region_scope: Node(20),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 20,
},
),
value: e4,
},
},
Expr {
ty: &str,
temp_lifetime: Some(
Node(52),
),
span: <anon>:6:38: 6:47 (#0),
kind: Literal {
literal: Const {
ty: &str,
val: Value(
Slice {
data: Allocation {
bytes: [
102,
34,
],
relocations: Relocations(
SortedMap {
data: [],
},
),
init_mask: InitMask {
blocks: [
3,
],
len: Size {
raw: 2,
},
},
align: Align {
pow2: 0,
},
mutability: Not,
extra: (),
},
start: 0,
end: 2,
},
),
},
user_ty: None,
const_id: None,
},
},
Expr {
ty: &str,
temp_lifetime: Some(
Node(52),
),
span: <anon>:6:38: 6:47 (#0),
kind: Scope {
region_scope: Node(21),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 21,
},
),
value: e6,
},
},
Expr {
ty: &str,
temp_lifetime: Some(
Node(52),
),
span: <anon>:6:38: 6:47 (#0),
kind: Literal {
literal: Const {
ty: &str,
val: Value(
Slice {
data: Allocation {
bytes: [
34,
10,
],
relocations: Relocations(
SortedMap {
data: [],
},
),
init_mask: InitMask {
blocks: [
3,
],
len: Size {
raw: 2,
},
},
align: Align {
pow2: 0,
},
mutability: Not,
extra: (),
},
start: 0,
end: 2,
},
),
},
user_ty: None,
const_id: None,
},
},
Expr {
ty: &str,
temp_lifetime: Some(
Node(52),
),
span: <anon>:6:38: 6:47 (#0),
kind: Scope {
region_scope: Node(22),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 22,
},
),
value: e8,
},
},
Expr {
ty: [&str; 2],
temp_lifetime: Some(
Node(52),
),
span: <anon>:6:38: 6:47 (#0),
kind: Array {
fields: [
e7,
e9,
],
},
},
Expr {
ty: [&str; 2],
temp_lifetime: Some(
Node(52),
),
span: <anon>:6:38: 6:47 (#0),
kind: Scope {
region_scope: Node(23),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 23,
},
),
value: e10,
},
},
Expr {
ty: &[&str; 2],
temp_lifetime: Some(
Node(52),
),
span: <anon>:6:38: 6:47 (#0),
kind: Borrow {
borrow_kind: Shared,
arg: e11,
},
},
Expr {
ty: [&str; 2],
temp_lifetime: Some(
Node(52),
),
span: <anon>:6:38: 6:47 (#0),
kind: Deref {
arg: e12,
},
},
Expr {
ty: &[&str; 2],
temp_lifetime: Some(
Node(52),
),
span: <anon>:6:38: 6:47 (#0),
kind: Borrow {
borrow_kind: Shared,
arg: e13,
},
},
Expr {
ty: &[&str],
temp_lifetime: Some(
Node(52),
),
span: <anon>:6:38: 6:47 (#0),
kind: Pointer {
cast: Unsize,
source: e14,
},
},
Expr {
ty: &[&str],
temp_lifetime: Some(
Node(52),
),
span: <anon>:6:38: 6:47 (#0),
kind: Scope {
region_scope: Node(24),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 24,
},
),
value: e15,
},
},
Expr {
ty: &str,
temp_lifetime: Some(
Node(52),
),
span: <anon>:6:49: 6:50 (#0),
kind: VarRef {
id: HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 6,
},
},
},
Expr {
ty: &str,
temp_lifetime: Some(
Node(52),
),
span: <anon>:6:49: 6:50 (#0),
kind: Scope {
region_scope: Node(26),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 26,
},
),
value: e17,
},
},
Expr {
ty: &&str,
temp_lifetime: Some(
Node(52),
),
span: <anon>:6:49: 6:50 (#0),
kind: Borrow {
borrow_kind: Shared,
arg: e18,
},
},
Expr {
ty: &&str,
temp_lifetime: Some(
Node(52),
),
span: <anon>:6:49: 6:50 (#0),
kind: Scope {
region_scope: Node(27),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 27,
},
),
value: e19,
},
},
Expr {
ty: (&&str,),
temp_lifetime: Some(
Node(52),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
kind: Tuple {
fields: [
e20,
],
},
},
Expr {
ty: (&&str,),
temp_lifetime: Some(
Node(52),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
kind: Scope {
region_scope: Node(28),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 28,
},
),
value: e21,
},
},
Expr {
ty: for<'b> fn(&'b &str, for<'r, 's, 't0> fn(&'r &str, &'s mut std::fmt::Formatter<'t0>) -> std::result::Result<(), std::fmt::Error>) -> std::fmt::ArgumentV1<'b> {std::fmt::ArgumentV1::new::<&str>},
temp_lifetime: Some(
Node(47),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
kind: Literal {
literal: Const {
ty: for<'b> fn(&'b &str, for<'r, 's, 't0> fn(&'r &str, &'s mut std::fmt::Formatter<'t0>) -> std::result::Result<(), std::fmt::Error>) -> std::fmt::ArgumentV1<'b> {std::fmt::ArgumentV1::new::<&str>},
val: Value(
Scalar(
<ZST>,
),
),
},
user_ty: Some(
Canonical {
max_universe: U0,
variables: [
CanonicalVarInfo {
kind: Region(
U0,
),
},
CanonicalVarInfo {
kind: Ty(
General(
U0,
),
),
},
CanonicalVarInfo {
kind: Region(
U0,
),
},
],
value: TypeOf(
DefId(2:8948 ~ core[734c]::fmt::{impl#2}::new),
UserSubsts {
substs: [
ReLateBound(DebruijnIndex(0), BoundRegion { var: 0, kind: BrAnon(0) }),
^1,
],
user_self_ty: Some(
UserSelfTy {
impl_def_id: DefId(2:8946 ~ core[734c]::fmt::{impl#2}),
self_ty: std::fmt::ArgumentV1<'_>,
},
),
},
),
},
),
const_id: None,
},
},
Expr {
ty: for<'b> fn(&'b &str, for<'r, 's, 't0> fn(&'r &str, &'s mut std::fmt::Formatter<'t0>) -> std::result::Result<(), std::fmt::Error>) -> std::fmt::ArgumentV1<'b> {std::fmt::ArgumentV1::new::<&str>},
temp_lifetime: Some(
Node(47),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
kind: Scope {
region_scope: Node(38),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 38,
},
),
value: e23,
},
},
Expr {
ty: &&str,
temp_lifetime: Some(
Node(47),
),
span: <anon>:6:49: 6:50 (#4),
kind: VarRef {
id: HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 29,
},
},
},
Expr {
ty: &str,
temp_lifetime: Some(
Node(47),
),
span: <anon>:6:49: 6:50 (#4),
kind: Deref {
arg: e25,
},
},
Expr {
ty: &&str,
temp_lifetime: Some(
Node(47),
),
span: <anon>:6:49: 6:50 (#4),
kind: Borrow {
borrow_kind: Shared,
arg: e26,
},
},
Expr {
ty: &&str,
temp_lifetime: Some(
Node(47),
),
span: <anon>:6:49: 6:50 (#4),
kind: Scope {
region_scope: Node(40),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 40,
},
),
value: e27,
},
},
Expr {
ty: for<'r, 's, 't0> fn(&'r &str, &'s mut std::fmt::Formatter<'t0>) -> std::result::Result<(), std::fmt::Error> {<&str as std::fmt::Display>::fmt},
temp_lifetime: Some(
Node(47),
),
span: <anon>:6:49: 6:50 (#4),
kind: Literal {
literal: Const {
ty: for<'r, 's, 't0> fn(&'r &str, &'s mut std::fmt::Formatter<'t0>) -> std::result::Result<(), std::fmt::Error> {<&str as std::fmt::Display>::fmt},
val: Value(
Scalar(
<ZST>,
),
),
},
user_ty: None,
const_id: None,
},
},
Expr {
ty: for<'r, 's, 't0> fn(&'r &str, &'s mut std::fmt::Formatter<'t0>) -> std::result::Result<(), std::fmt::Error>,
temp_lifetime: Some(
Node(47),
),
span: <anon>:6:49: 6:50 (#4),
kind: Pointer {
cast: ReifyFnPointer,
source: e29,
},
},
Expr {
ty: for<'r, 's, 't0> fn(&'r &str, &'s mut std::fmt::Formatter<'t0>) -> std::result::Result<(), std::fmt::Error>,
temp_lifetime: Some(
Node(47),
),
span: <anon>:6:49: 6:50 (#4),
kind: Scope {
region_scope: Node(45),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 45,
},
),
value: e30,
},
},
Expr {
ty: std::fmt::ArgumentV1,
temp_lifetime: Some(
Node(47),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
kind: Call {
ty: for<'b> fn(&'b &str, for<'r, 's, 't0> fn(&'r &str, &'s mut std::fmt::Formatter<'t0>) -> std::result::Result<(), std::fmt::Error>) -> std::fmt::ArgumentV1<'b> {std::fmt::ArgumentV1::new::<&str>},
fun: e24,
args: [
e28,
e31,
],
from_hir_call: true,
fn_span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
},
},
Expr {
ty: std::fmt::ArgumentV1,
temp_lifetime: Some(
Node(47),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
kind: Scope {
region_scope: Node(46),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 46,
},
),
value: e32,
},
},
Expr {
ty: [std::fmt::ArgumentV1; 1],
temp_lifetime: Some(
Node(47),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
kind: Array {
fields: [
e33,
],
},
},
Expr {
ty: [std::fmt::ArgumentV1; 1],
temp_lifetime: Some(
Node(47),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
kind: Scope {
region_scope: Node(47),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 47,
},
),
value: e34,
},
},
Expr {
ty: [std::fmt::ArgumentV1; 1],
temp_lifetime: Some(
Node(47),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
kind: Scope {
region_scope: Destruction(47),
lint_level: Inherited,
value: e35,
},
},
Expr {
ty: [std::fmt::ArgumentV1; 1],
temp_lifetime: Some(
Node(52),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
kind: Match {
scrutinee: e22,
arms: [
a0,
],
},
},
Expr {
ty: [std::fmt::ArgumentV1; 1],
temp_lifetime: Some(
Node(52),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
kind: Scope {
region_scope: Node(48),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 48,
},
),
value: e37,
},
},
Expr {
ty: &[std::fmt::ArgumentV1; 1],
temp_lifetime: Some(
Node(52),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
kind: Borrow {
borrow_kind: Shared,
arg: e38,
},
},
Expr {
ty: [std::fmt::ArgumentV1; 1],
temp_lifetime: Some(
Node(52),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
kind: Deref {
arg: e39,
},
},
Expr {
ty: &[std::fmt::ArgumentV1; 1],
temp_lifetime: Some(
Node(52),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
kind: Borrow {
borrow_kind: Shared,
arg: e40,
},
},
Expr {
ty: &[std::fmt::ArgumentV1],
temp_lifetime: Some(
Node(52),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
kind: Pointer {
cast: Unsize,
source: e41,
},
},
Expr {
ty: &[std::fmt::ArgumentV1],
temp_lifetime: Some(
Node(52),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
kind: Scope {
region_scope: Node(49),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 49,
},
),
value: e42,
},
},
Expr {
ty: std::fmt::Arguments,
temp_lifetime: Some(
Node(52),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
kind: Call {
ty: fn(&[&'static str], &[std::fmt::ArgumentV1]) -> std::fmt::Arguments {std::fmt::Arguments::new_v1},
fun: e5,
args: [
e16,
e43,
],
from_hir_call: true,
fn_span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
},
},
Expr {
ty: std::fmt::Arguments,
temp_lifetime: Some(
Node(52),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:28: 98:61 (#4),
kind: Scope {
region_scope: Node(50),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 50,
},
),
value: e44,
},
},
Expr {
ty: (),
temp_lifetime: Some(
Node(52),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:9: 98:62 (#3),
kind: Call {
ty: for<'r> fn(std::fmt::Arguments<'r>) {std::io::_print},
fun: e3,
args: [
e45,
],
from_hir_call: true,
fn_span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:9: 98:62 (#3),
},
},
Expr {
ty: (),
temp_lifetime: Some(
Node(52),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:98:9: 98:62 (#3),
kind: Scope {
region_scope: Node(51),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 51,
},
),
value: e46,
},
},
Expr {
ty: (),
temp_lifetime: Some(
Node(54),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:97:23: 99:6 (#3),
kind: Block {
body: Block {
targeted_by_break: false,
region_scope: Node(53),
opt_destruction_scope: None,
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:97:23: 99:6 (#3),
stmts: [
s0,
],
expr: None,
safety_mode: Safe,
},
},
},
Expr {
ty: (),
temp_lifetime: Some(
Node(54),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:97:23: 99:6 (#3),
kind: Scope {
region_scope: Node(54),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 54,
},
),
value: e48,
},
},
Expr {
ty: (),
temp_lifetime: Some(
Node(54),
),
span: /rustc/b70888601af92f6cdc0364abab3446e418b91d36/library/std/src/macros.rs:97:23: 99:6 (#3),
kind: Scope {
region_scope: Destruction(54),
lint_level: Inherited,
value: e49,
},
},
Expr {
ty: (),
temp_lifetime: Some(
Node(57),
),
span: <anon>:5:9: 7:10 (#0),
kind: Match {
scrutinee: e1,
arms: [
a1,
],
},
},
Expr {
ty: (),
temp_lifetime: Some(
Node(57),
),
span: <anon>:5:9: 7:10 (#0),
kind: Scope {
region_scope: Node(55),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 55,
},
),
value: e51,
},
},
Expr {
ty: (),
temp_lifetime: Some(
Node(57),
),
span: <anon>:4:21: 8:6 (#0),
kind: Block {
body: Block {
targeted_by_break: false,
region_scope: Node(56),
opt_destruction_scope: None,
span: <anon>:4:21: 8:6 (#0),
stmts: [],
expr: Some(
e52,
),
safety_mode: Safe,
},
},
},
Expr {
ty: (),
temp_lifetime: Some(
Node(57),
),
span: <anon>:4:21: 8:6 (#0),
kind: Scope {
region_scope: Node(57),
lint_level: Explicit(
HirId {
owner: DefId(0:7 ~ rust_out[6150]::{impl#0}::print),
local_id: 57,
},
),
value: e53,
},
},
Expr {
ty: (),
temp_lifetime: Some(
Node(57),
),
span: <anon>:4:21: 8:6 (#0),
kind: Scope {
region_scope: Destruction(57),
lint_level: Inherited,
value: e54,
},
},
],
stmts: [
Stmt {
kind: Expr {
scope: Node(52),
expr: e47,
},
opt_destruction_scope: Some(
Destruction(52),
),
},
],
}
DefId(0:8 ~ rust_out[6150]::main):
Thir {
arms: [],
exprs: [
Expr {
ty: (),
temp_lifetime: Some(
Node(2),
),
span: <anon>:11:11: 11:13 (#0),
kind: Block {
body: Block {
targeted_by_break: false,
region_scope: Node(1),
opt_destruction_scope: None,
span: <anon>:11:11: 11:13 (#0),
stmts: [],
expr: None,
safety_mode: Safe,
},
},
},
Expr {
ty: (),
temp_lifetime: Some(
Node(2),
),
span: <anon>:11:11: 11:13 (#0),
kind: Scope {
region_scope: Node(2),
lint_level: Explicit(
HirId {
owner: DefId(0:8 ~ rust_out[6150]::main),
local_id: 2,
},
),
value: e0,
},
},
Expr {
ty: (),
temp_lifetime: Some(
Node(2),
),
span: <anon>:11:11: 11:13 (#0),
kind: Scope {
region_scope: Destruction(2),
lint_level: Inherited,
value: e1,
},
},
],
stmts: [],
}
=== stderr ===
warning: struct is never constructed: `Foo`
--> <anon>:1:8
|
1 | struct Foo(pub str);
| ^^^
|
= note: `#[warn(dead_code)]` on by default
warning: associated function is never used: `print`
--> <anon>:4:8
|
4 | fn print(&self) {
| ^^^^^
warning: 2 warnings emitted
==============
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Reference: rust-lang/rust#13727