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defer array len printing to const arg printing

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This commit is contained in:
Boxy 2023-01-14 18:32:17 +00:00
parent e08b379d5d
commit 4ca5368a12
31 changed files with 59 additions and 66 deletions
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24
compiler/rustc_middle/src/ty/print/pretty.rs
View File

@ -854,24 +854,7 @@ pub trait PrettyPrinter<'tcx>:
}
p!("]");
}
ty::Array(ty, sz) => {
p!("[", print(ty), "; ");
if self.should_print_verbose() {
p!(write("{:?}", sz));
} else if let ty::ConstKind::Unevaluated(..) = sz.kind() {
// Do not try to evaluate unevaluated constants. If we are const evaluating an
// array length anon const, rustc will (with debug assertions) print the
// constant's path. Which will end up here again.
p!("_");
} else if let Some(n) = sz.kind().try_to_bits(self.tcx().data_layout.pointer_size) {
p!(write("{}", n));
} else if let ty::ConstKind::Param(param) = sz.kind() {
p!(print(param));
} else {
p!("_");
}
p!("]")
}
ty::Array(ty, sz) => p!("[", print(ty), "; ", print(sz), "]"),
ty::Slice(ty) => p!("[", print(ty), "]"),
}
@ -1303,10 +1286,10 @@ pub trait PrettyPrinter<'tcx>:
match ct.kind() {
ty::ConstKind::Unevaluated(ty::UnevaluatedConst { def, substs }) => {
match self.tcx().def_kind(def.did) {
DefKind::Static(..) | DefKind::Const | DefKind::AssocConst => {
DefKind::Const | DefKind::AssocConst => {
p!(print_value_path(def.did, substs))
}
_ => {
DefKind::AnonConst => {
if def.is_local() {
let span = self.tcx().def_span(def.did);
if let Ok(snip) = self.tcx().sess.source_map().span_to_snippet(span) {
@ -1318,6 +1301,7 @@ pub trait PrettyPrinter<'tcx>:
print_underscore!()
}
}
defkind => bug!("`{:?}` has unexpcted defkind {:?}", ct, defkind),
}
}
ty::ConstKind::Infer(infer_ct) => {

4
tests/ui/const-generics/const-param-type-depends-on-const-param.min.stderr
View File

@ -10,7 +10,7 @@ error[E0770]: the type of const parameters must not depend on other generic para
LL | pub struct SelfDependent<const N: [u8; N]>;
| ^ the type must not depend on the parameter `N`
error: `[u8; _]` is forbidden as the type of a const generic parameter
error: `[u8; N]` is forbidden as the type of a const generic parameter
--> $DIR/const-param-type-depends-on-const-param.rs:11:47
|
LL | pub struct Dependent<const N: usize, const X: [u8; N]>([(); N]);
@ -19,7 +19,7 @@ LL | pub struct Dependent<const N: usize, const X: [u8; N]>([(); N]);
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#![feature(adt_const_params)]`
error: `[u8; _]` is forbidden as the type of a const generic parameter
error: `[u8; N]` is forbidden as the type of a const generic parameter
--> $DIR/const-param-type-depends-on-const-param.rs:15:35
|
LL | pub struct SelfDependent<const N: [u8; N]>;

4
tests/ui/const-generics/const-param-type-depends-on-const-param.rs
View File

@ -10,10 +10,10 @@
pub struct Dependent<const N: usize, const X: [u8; N]>([(); N]);
//~^ ERROR: the type of const parameters must not depend on other generic parameters
//[min]~^^ ERROR `[u8; _]` is forbidden
//[min]~^^ ERROR `[u8; N]` is forbidden
pub struct SelfDependent<const N: [u8; N]>;
//~^ ERROR: the type of const parameters must not depend on other generic parameters
//[min]~^^ ERROR `[u8; _]` is forbidden
//[min]~^^ ERROR `[u8; N]` is forbidden
fn main() {}

4
tests/ui/const-generics/dont-evaluate-array-len-on-err-1.stderr
View File

@ -1,8 +1,8 @@
error[E0277]: the trait bound `[Adt; _]: Foo` is not satisfied
error[E0277]: the trait bound `[Adt; std::mem::size_of::<Self::Assoc>()]: Foo` is not satisfied
--> $DIR/dont-evaluate-array-len-on-err-1.rs:15:9
|
LL | <[Adt; std::mem::size_of::<Self::Assoc>()] as Foo>::bar()
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Foo` is not implemented for `[Adt; _]`
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Foo` is not implemented for `[Adt; std::mem::size_of::<Self::Assoc>()]`
error: aborting due to previous error

2
tests/ui/const-generics/generic_const_exprs/issue-62504.min.stderr
View File

@ -15,7 +15,7 @@ LL | ArrayHolder([0; Self::SIZE])
| arguments to this struct are incorrect
|
= note: expected array `[u32; X]`
found array `[u32; _]`
found array `[u32; Self::SIZE]`
note: tuple struct defined here
--> $DIR/issue-62504.rs:14:8
|

6
tests/ui/const-generics/generic_const_exprs/issue-79518-default_trait_method_normalization.stderr
View File

@ -2,13 +2,13 @@ error[E0308]: mismatched types
--> $DIR/issue-79518-default_trait_method_normalization.rs:16:32
|
LL | Self::AssocInstance == [(); std::mem::size_of::<Self::Assoc>()];
| ------------------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected associated type, found array `[(); _]`
| ------------------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected associated type, found array `[(); std::mem::size_of::<Self::Assoc>()]`
| |
| expected because this is `<Self as Foo>::Assoc`
|
= note: expected associated type `<Self as Foo>::Assoc`
found array `[(); _]`
= help: consider constraining the associated type `<Self as Foo>::Assoc` to `[(); _]` or calling a method that returns `<Self as Foo>::Assoc`
found array `[(); std::mem::size_of::<Self::Assoc>()]`
= help: consider constraining the associated type `<Self as Foo>::Assoc` to `[(); std::mem::size_of::<Self::Assoc>()]` or calling a method that returns `<Self as Foo>::Assoc`
= note: for more information, visit https://doc.rust-lang.org/book/ch19-03-advanced-traits.html
error: aborting due to previous error

2
tests/ui/const-generics/issues/issue-62878.min.stderr
View File

@ -4,7 +4,7 @@ error[E0770]: the type of const parameters must not depend on other generic para
LL | fn foo<const N: usize, const A: [u8; N]>() {}
| ^ the type must not depend on the parameter `N`
error: `[u8; _]` is forbidden as the type of a const generic parameter
error: `[u8; N]` is forbidden as the type of a const generic parameter
--> $DIR/issue-62878.rs:5:33
|
LL | fn foo<const N: usize, const A: [u8; N]>() {}

2
tests/ui/const-generics/issues/issue-62878.rs
View File

@ -4,7 +4,7 @@
fn foo<const N: usize, const A: [u8; N]>() {}
//~^ ERROR the type of const parameters must not
//[min]~| ERROR `[u8; _]` is forbidden as the type of a const generic parameter
//[min]~| ERROR `[u8; N]` is forbidden as the type of a const generic parameter
fn main() {
foo::<_, { [1] }>();

2
tests/ui/const-generics/issues/issue-71169.min.stderr
View File

@ -4,7 +4,7 @@ error[E0770]: the type of const parameters must not depend on other generic para
LL | fn foo<const LEN: usize, const DATA: [u8; LEN]>() {}
| ^^^ the type must not depend on the parameter `LEN`
error: `[u8; _]` is forbidden as the type of a const generic parameter
error: `[u8; LEN]` is forbidden as the type of a const generic parameter
--> $DIR/issue-71169.rs:5:38
|
LL | fn foo<const LEN: usize, const DATA: [u8; LEN]>() {}

2
tests/ui/const-generics/issues/issue-71169.rs
View File

@ -4,7 +4,7 @@
fn foo<const LEN: usize, const DATA: [u8; LEN]>() {}
//~^ ERROR the type of const parameters must not
//[min]~^^ ERROR `[u8; _]` is forbidden as the type of a const generic parameter
//[min]~^^ ERROR `[u8; LEN]` is forbidden as the type of a const generic parameter
fn main() {
const DATA: [u8; 4] = *b"ABCD";
foo::<4, DATA>();

2
tests/ui/const-generics/issues/issue-73491.min.stderr
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@ -1,4 +1,4 @@
error: `[u32; _]` is forbidden as the type of a const generic parameter
error: `[u32; LEN]` is forbidden as the type of a const generic parameter
--> $DIR/issue-73491.rs:8:19
|
LL | fn hoge<const IN: [u32; LEN]>() {}

2
tests/ui/const-generics/issues/issue-73491.rs
View File

@ -6,6 +6,6 @@
const LEN: usize = 1024;
fn hoge<const IN: [u32; LEN]>() {}
//[min]~^ ERROR `[u32; _]` is forbidden as the type of a const generic parameter
//[min]~^ ERROR `[u32; LEN]` is forbidden as the type of a const generic parameter
fn main() {}

4
tests/ui/const-generics/issues/issue-74101.min.stderr
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@ -1,4 +1,4 @@
error: `[u8; _]` is forbidden as the type of a const generic parameter
error: `[u8; 1 + 2]` is forbidden as the type of a const generic parameter
--> $DIR/issue-74101.rs:6:18
|
LL | fn test<const N: [u8; 1 + 2]>() {}
@ -7,7 +7,7 @@ LL | fn test<const N: [u8; 1 + 2]>() {}
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#![feature(adt_const_params)]`
error: `[u8; _]` is forbidden as the type of a const generic parameter
error: `[u8; 1 + 2]` is forbidden as the type of a const generic parameter
--> $DIR/issue-74101.rs:9:21
|
LL | struct Foo<const N: [u8; 1 + 2]>;

4
tests/ui/const-generics/issues/issue-74101.rs
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@ -4,9 +4,9 @@
#![cfg_attr(full, allow(incomplete_features))]
fn test<const N: [u8; 1 + 2]>() {}
//[min]~^ ERROR `[u8; _]` is forbidden as the type of a const generic parameter
//[min]~^ ERROR `[u8; 1 + 2]` is forbidden as the type of a const generic parameter
struct Foo<const N: [u8; 1 + 2]>;
//[min]~^ ERROR `[u8; _]` is forbidden as the type of a const generic parameter
//[min]~^ ERROR `[u8; 1 + 2]` is forbidden as the type of a const generic parameter
fn main() {}

2
tests/ui/const-generics/issues/issue-75047.min.stderr
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@ -1,4 +1,4 @@
error: `[u8; _]` is forbidden as the type of a const generic parameter
error: `[u8; Bar::<u32>::value()]` is forbidden as the type of a const generic parameter
--> $DIR/issue-75047.rs:14:21
|
LL | struct Foo<const N: [u8; Bar::<u32>::value()]>;

2
tests/ui/const-generics/issues/issue-75047.rs
View File

@ -12,6 +12,6 @@ impl<T> Bar<T> {
}
struct Foo<const N: [u8; Bar::<u32>::value()]>;
//[min]~^ ERROR `[u8; _]` is forbidden as the type of a const generic parameter
//[min]~^ ERROR `[u8; Bar::<u32>::value()]` is forbidden as the type of a const generic parameter
fn main() {}

12
tests/ui/const-generics/nested-type.min.stderr
View File

@ -1,4 +1,14 @@
error: `[u8; _]` is forbidden as the type of a const generic parameter
error: `[u8; {
struct Foo<const N: usize>;
impl<const N: usize> Foo<N> {
fn value() -> usize {
N
}
}
Foo::<17>::value()
}]` is forbidden as the type of a const generic parameter
--> $DIR/nested-type.rs:6:21
|
LL | struct Foo<const N: [u8; {

4
tests/ui/consts/const-size_of-cycle.stderr
View File

@ -15,8 +15,8 @@ note: ...which requires const-evaluating + checking `Foo::bytes::{constant#0}`..
LL | bytes: [u8; std::mem::size_of::<Foo>()]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
= note: ...which requires computing layout of `Foo`...
= note: ...which requires computing layout of `[u8; _]`...
= note: ...which requires normalizing `[u8; _]`...
= note: ...which requires computing layout of `[u8; std::mem::size_of::<Foo>()]`...
= note: ...which requires normalizing `[u8; std::mem::size_of::<Foo>()]`...
= note: ...which again requires evaluating type-level constant, completing the cycle
note: cycle used when checking that `Foo` is well-formed
--> $DIR/const-size_of-cycle.rs:3:1

4
tests/ui/consts/issue-44415.stderr
View File

@ -15,8 +15,8 @@ note: ...which requires const-evaluating + checking `Foo::bytes::{constant#0}`..
LL | bytes: [u8; unsafe { intrinsics::size_of::<Foo>() }],
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
= note: ...which requires computing layout of `Foo`...
= note: ...which requires computing layout of `[u8; _]`...
= note: ...which requires normalizing `[u8; _]`...
= note: ...which requires computing layout of `[u8; unsafe { intrinsics::size_of::<Foo>() }]`...
= note: ...which requires normalizing `[u8; unsafe { intrinsics::size_of::<Foo>() }]`...
= note: ...which again requires evaluating type-level constant, completing the cycle
note: cycle used when checking that `Foo` is well-formed
--> $DIR/issue-44415.rs:5:1

2
tests/ui/consts/too_generic_eval_ice.rs
View File

@ -7,7 +7,7 @@ impl<A, B> Foo<A, B> {
[5; Self::HOST_SIZE] == [6; 0]
//~^ ERROR constant expression depends on a generic parameter
//~| ERROR constant expression depends on a generic parameter
//~| ERROR can't compare `[{integer}; _]` with `[{integer}; 0]`
//~| ERROR can't compare `[{integer}; Self::HOST_SIZE]` with `[{integer}; 0]`
}
}

6
tests/ui/consts/too_generic_eval_ice.stderr
View File

@ -14,13 +14,13 @@ LL | [5; Self::HOST_SIZE] == [6; 0]
|
= note: this may fail depending on what value the parameter takes
error[E0277]: can't compare `[{integer}; _]` with `[{integer}; 0]`
error[E0277]: can't compare `[{integer}; Self::HOST_SIZE]` with `[{integer}; 0]`
--> $DIR/too_generic_eval_ice.rs:7:30
|
LL | [5; Self::HOST_SIZE] == [6; 0]
| ^^ no implementation for `[{integer}; _] == [{integer}; 0]`
| ^^ no implementation for `[{integer}; Self::HOST_SIZE] == [{integer}; 0]`
|
= help: the trait `PartialEq<[{integer}; 0]>` is not implemented for `[{integer}; _]`
= help: the trait `PartialEq<[{integer}; 0]>` is not implemented for `[{integer}; Self::HOST_SIZE]`
= help: the following other types implement trait `PartialEq<Rhs>`:
<&[B] as PartialEq<[A; N]>>
<&[T] as PartialEq<Vec<U, A>>>

2
tests/ui/debuginfo/debuginfo-type-name-layout-ice-94961-1.stderr
View File

@ -1,4 +1,4 @@
error: values of the type `[u8; SIZE]` are too big for the current architecture
error: values of the type `[u8; usize::MAX]` are too big for the current architecture
error: aborting due to previous error

2
tests/ui/debuginfo/debuginfo-type-name-layout-ice-94961-2.stderr
View File

@ -1,4 +1,4 @@
error: values of the type `[u8; SIZE]` are too big for the current architecture
error: values of the type `[u8; usize::MAX]` are too big for the current architecture
error: aborting due to previous error

2
tests/ui/inference/issue-83606.rs
View File

@ -6,5 +6,5 @@ fn foo<const N: usize>(_: impl std::fmt::Display) -> [usize; N] {
fn main() {
let _ = foo("foo");
//~^ ERROR: type annotations needed for `[usize; _]`
//~^ ERROR: type annotations needed for `[usize; N]`
}

4
tests/ui/inference/issue-83606.stderr
View File

@ -1,4 +1,4 @@
error[E0282]: type annotations needed for `[usize; _]`
error[E0282]: type annotations needed for `[usize; N]`
--> $DIR/issue-83606.rs:8:9
|
LL | let _ = foo("foo");
@ -6,7 +6,7 @@ LL | let _ = foo("foo");
|
help: consider giving this pattern a type, where the the value of const parameter `N` is specified
|
LL | let _: [usize; _] = foo("foo");
LL | let _: [usize; N] = foo("foo");
| ++++++++++++
error: aborting due to previous error

2
tests/ui/limits/issue-15919-64.stderr
View File

@ -1,4 +1,4 @@
error: values of the type `[usize; 18446744073709551615]` are too big for the current architecture
error: values of the type `[usize; usize::MAX]` are too big for the current architecture
--> $DIR/issue-15919-64.rs:9:9
|
LL | let x = [0usize; 0xffff_ffff_ffff_ffff];

4
tests/ui/limits/issue-55878.stderr
View File

@ -1,7 +1,7 @@
error[E0080]: values of the type `[u8; SIZE]` are too big for the current architecture
error[E0080]: values of the type `[u8; usize::MAX]` are too big for the current architecture
--> $SRC_DIR/core/src/mem/mod.rs:LL:COL
|
note: inside `std::mem::size_of::<[u8; SIZE]>`
note: inside `std::mem::size_of::<[u8; usize::MAX]>`
--> $SRC_DIR/core/src/mem/mod.rs:LL:COL
note: inside `main`
--> $DIR/issue-55878.rs:7:26

2
tests/ui/limits/issue-69485-var-size-diffs-too-large.stderr
View File

@ -1,4 +1,4 @@
error: values of the type `[u8; 18446744073709551615]` are too big for the current architecture
error: values of the type `[u8; usize::MAX]` are too big for the current architecture
--> $DIR/issue-69485-var-size-diffs-too-large.rs:6:5
|
LL | Bug::V([0; !0]);

2
tests/ui/limits/issue-75158-64.stderr
View File

@ -1,4 +1,4 @@
error: values of the type `[u8; 18446744073709551615]` are too big for the current architecture
error: values of the type `[u8; usize::MAX]` are too big for the current architecture
error: aborting due to previous error

7
tests/ui/symbol-names/impl2.rs
View File

@ -8,9 +8,8 @@ trait Foo {
}
impl Foo for [u8; 1 + 2] {
#[rustc_def_path] //~ ERROR def-path(<[u8; _] as Foo>::baz)
fn baz() { }
#[rustc_def_path] //~ ERROR def-path(<[u8; 1 + 2] as Foo>::baz)
fn baz() {}
}
fn main() {
}
fn main() {}

2
tests/ui/symbol-names/impl2.stderr
View File

@ -1,4 +1,4 @@
error: def-path(<[u8; _] as Foo>::baz)
error: def-path(<[u8; 1 + 2] as Foo>::baz)
--> $DIR/impl2.rs:11:5
|
LL | #[rustc_def_path]