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Always evaluate free constants and statics, even if previous errors occurred

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This commit is contained in:
Oli Scherer 2024-02-14 12:28:07 +00:00
parent d88ad9e6b7
commit d136b05c1b
4 changed files with 23 additions and 64 deletions
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5
tests/ui-toml/suppress_lint_in_const/test.rs
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@ -13,8 +13,6 @@
const ARR: [i32; 2] = [1, 2]; const ARR: [i32; 2] = [1, 2];
const REF: &i32 = &ARR[idx()]; // Ok, should not produce stderr, since `suppress-restriction-lint-in-const` is set true. const REF: &i32 = &ARR[idx()]; // Ok, should not produce stderr, since `suppress-restriction-lint-in-const` is set true.
const REF_ERR: &i32 = &ARR[idx4()]; // Ok, let rustc handle const contexts.
//~^ ERROR: failed
const fn idx() -> usize { const fn idx() -> usize {
1 1
@ -35,9 +33,6 @@ fn main() {
x[const { idx() }]; // Ok, should not produce stderr. x[const { idx() }]; // Ok, should not produce stderr.
x[const { idx4() }]; // Ok, let rustc's `unconditional_panic` lint handle `usize` indexing on arrays. x[const { idx4() }]; // Ok, let rustc's `unconditional_panic` lint handle `usize` indexing on arrays.
const { &ARR[idx()] }; // Ok, should not produce stderr, since `suppress-restriction-lint-in-const` is set true. const { &ARR[idx()] }; // Ok, should not produce stderr, since `suppress-restriction-lint-in-const` is set true.
const { &ARR[idx4()] }; // Ok, should not produce stderr, since `suppress-restriction-lint-in-const` is set true.
//
//~^^ ERROR: failed
let y = &x; let y = &x;
y[0]; // Ok, referencing shouldn't affect this lint. See the issue 6021 y[0]; // Ok, referencing shouldn't affect this lint. See the issue 6021

33
tests/ui-toml/suppress_lint_in_const/test.stderr
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@ -1,17 +1,5 @@
error[E0080]: evaluation of `main::{constant#3}` failed
--> $DIR/test.rs:38:14
|
LL | const { &ARR[idx4()] }; // Ok, should not produce stderr, since `suppress-restriction-lint-in-const` is set true.
| ^^^^^^^^^^^ index out of bounds: the length is 2 but the index is 4
note: erroneous constant encountered
--> $DIR/test.rs:38:5
|
LL | const { &ARR[idx4()] }; // Ok, should not produce stderr, since `suppress-restriction-lint-in-const` is set true.
| ^^^^^^^^^^^^^^^^^^^^^^
error: indexing may panic error: indexing may panic
--> $DIR/test.rs:29:5 --> $DIR/test.rs:27:5
| |
LL | x[index]; LL | x[index];
| ^^^^^^^^ | ^^^^^^^^
@ -21,7 +9,7 @@ LL | x[index];
= help: to override `-D warnings` add `#[allow(clippy::indexing_slicing)]` = help: to override `-D warnings` add `#[allow(clippy::indexing_slicing)]`
error: indexing may panic error: indexing may panic
--> $DIR/test.rs:47:5 --> $DIR/test.rs:42:5
| |
LL | v[0]; LL | v[0];
| ^^^^ | ^^^^
@ -29,7 +17,7 @@ LL | v[0];
= help: consider using `.get(n)` or `.get_mut(n)` instead = help: consider using `.get(n)` or `.get_mut(n)` instead
error: indexing may panic error: indexing may panic
--> $DIR/test.rs:48:5 --> $DIR/test.rs:43:5
| |
LL | v[10]; LL | v[10];
| ^^^^^ | ^^^^^
@ -37,7 +25,7 @@ LL | v[10];
= help: consider using `.get(n)` or `.get_mut(n)` instead = help: consider using `.get(n)` or `.get_mut(n)` instead
error: indexing may panic error: indexing may panic
--> $DIR/test.rs:49:5 --> $DIR/test.rs:44:5
| |
LL | v[1 << 3]; LL | v[1 << 3];
| ^^^^^^^^^ | ^^^^^^^^^
@ -45,7 +33,7 @@ LL | v[1 << 3];
= help: consider using `.get(n)` or `.get_mut(n)` instead = help: consider using `.get(n)` or `.get_mut(n)` instead
error: indexing may panic error: indexing may panic
--> $DIR/test.rs:55:5 --> $DIR/test.rs:50:5
| |
LL | v[N]; LL | v[N];
| ^^^^ | ^^^^
@ -53,19 +41,12 @@ LL | v[N];
= help: consider using `.get(n)` or `.get_mut(n)` instead = help: consider using `.get(n)` or `.get_mut(n)` instead
error: indexing may panic error: indexing may panic
--> $DIR/test.rs:56:5 --> $DIR/test.rs:51:5
| |
LL | v[M]; LL | v[M];
| ^^^^ | ^^^^
| |
= help: consider using `.get(n)` or `.get_mut(n)` instead = help: consider using `.get(n)` or `.get_mut(n)` instead
error[E0080]: evaluation of constant value failed error: aborting due to 6 previous errors
--> $DIR/test.rs:16:24
|
LL | const REF_ERR: &i32 = &ARR[idx4()]; // Ok, let rustc handle const contexts.
| ^^^^^^^^^^^ index out of bounds: the length is 2 but the index is 4
error: aborting due to 8 previous errors
For more information about this error, try `rustc --explain E0080`.

2
tests/ui/indexing_slicing_index.rs
View File

@ -13,8 +13,6 @@
const ARR: [i32; 2] = [1, 2]; const ARR: [i32; 2] = [1, 2];
const REF: &i32 = &ARR[idx()]; // This should be linted, since `suppress-restriction-lint-in-const` default is false. const REF: &i32 = &ARR[idx()]; // This should be linted, since `suppress-restriction-lint-in-const` default is false.
//~^ ERROR: indexing may panic //~^ ERROR: indexing may panic
const REF_ERR: &i32 = &ARR[idx4()]; // Ok, let rustc handle const contexts.
//~^ ERROR: indexing may panic
const fn idx() -> usize { const fn idx() -> usize {
1 1

47
tests/ui/indexing_slicing_index.stderr
View File

@ -9,29 +9,20 @@ LL | const REF: &i32 = &ARR[idx()]; // This should be linted, since `suppress-re
= note: `-D clippy::indexing-slicing` implied by `-D warnings` = note: `-D clippy::indexing-slicing` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(clippy::indexing_slicing)]` = help: to override `-D warnings` add `#[allow(clippy::indexing_slicing)]`
error: indexing may panic
--> $DIR/indexing_slicing_index.rs:16:24
|
LL | const REF_ERR: &i32 = &ARR[idx4()]; // Ok, let rustc handle const contexts.
| ^^^^^^^^^^^
|
= help: consider using `.get(n)` or `.get_mut(n)` instead
= note: the suggestion might not be applicable in constant blocks
error[E0080]: evaluation of `main::{constant#3}` failed error[E0080]: evaluation of `main::{constant#3}` failed
--> $DIR/indexing_slicing_index.rs:48:14 --> $DIR/indexing_slicing_index.rs:46:14
| |
LL | const { &ARR[idx4()] }; LL | const { &ARR[idx4()] };
| ^^^^^^^^^^^ index out of bounds: the length is 2 but the index is 4 | ^^^^^^^^^^^ index out of bounds: the length is 2 but the index is 4
note: erroneous constant encountered note: erroneous constant encountered
--> $DIR/indexing_slicing_index.rs:48:5 --> $DIR/indexing_slicing_index.rs:46:5
| |
LL | const { &ARR[idx4()] }; LL | const { &ARR[idx4()] };
| ^^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^^
error: indexing may panic error: indexing may panic
--> $DIR/indexing_slicing_index.rs:29:5 --> $DIR/indexing_slicing_index.rs:27:5
| |
LL | x[index]; LL | x[index];
| ^^^^^^^^ | ^^^^^^^^
@ -39,7 +30,7 @@ LL | x[index];
= help: consider using `.get(n)` or `.get_mut(n)` instead = help: consider using `.get(n)` or `.get_mut(n)` instead
error: index is out of bounds error: index is out of bounds
--> $DIR/indexing_slicing_index.rs:32:5 --> $DIR/indexing_slicing_index.rs:30:5
| |
LL | x[4]; LL | x[4];
| ^^^^ | ^^^^
@ -48,13 +39,13 @@ LL | x[4];
= help: to override `-D warnings` add `#[allow(clippy::out_of_bounds_indexing)]` = help: to override `-D warnings` add `#[allow(clippy::out_of_bounds_indexing)]`
error: index is out of bounds error: index is out of bounds
--> $DIR/indexing_slicing_index.rs:34:5 --> $DIR/indexing_slicing_index.rs:32:5
| |
LL | x[1 << 3]; LL | x[1 << 3];
| ^^^^^^^^^ | ^^^^^^^^^
error: indexing may panic error: indexing may panic
--> $DIR/indexing_slicing_index.rs:45:14 --> $DIR/indexing_slicing_index.rs:43:14
| |
LL | const { &ARR[idx()] }; LL | const { &ARR[idx()] };
| ^^^^^^^^^^ | ^^^^^^^^^^
@ -63,7 +54,7 @@ LL | const { &ARR[idx()] };
= note: the suggestion might not be applicable in constant blocks = note: the suggestion might not be applicable in constant blocks
error: indexing may panic error: indexing may panic
--> $DIR/indexing_slicing_index.rs:48:14 --> $DIR/indexing_slicing_index.rs:46:14
| |
LL | const { &ARR[idx4()] }; LL | const { &ARR[idx4()] };
| ^^^^^^^^^^^ | ^^^^^^^^^^^
@ -72,13 +63,13 @@ LL | const { &ARR[idx4()] };
= note: the suggestion might not be applicable in constant blocks = note: the suggestion might not be applicable in constant blocks
error: index is out of bounds error: index is out of bounds
--> $DIR/indexing_slicing_index.rs:55:5 --> $DIR/indexing_slicing_index.rs:53:5
| |
LL | y[4]; LL | y[4];
| ^^^^ | ^^^^
error: indexing may panic error: indexing may panic
--> $DIR/indexing_slicing_index.rs:58:5 --> $DIR/indexing_slicing_index.rs:56:5
| |
LL | v[0]; LL | v[0];
| ^^^^ | ^^^^
@ -86,7 +77,7 @@ LL | v[0];
= help: consider using `.get(n)` or `.get_mut(n)` instead = help: consider using `.get(n)` or `.get_mut(n)` instead
error: indexing may panic error: indexing may panic
--> $DIR/indexing_slicing_index.rs:60:5 --> $DIR/indexing_slicing_index.rs:58:5
| |
LL | v[10]; LL | v[10];
| ^^^^^ | ^^^^^
@ -94,7 +85,7 @@ LL | v[10];
= help: consider using `.get(n)` or `.get_mut(n)` instead = help: consider using `.get(n)` or `.get_mut(n)` instead
error: indexing may panic error: indexing may panic
--> $DIR/indexing_slicing_index.rs:62:5 --> $DIR/indexing_slicing_index.rs:60:5
| |
LL | v[1 << 3]; LL | v[1 << 3];
| ^^^^^^^^^ | ^^^^^^^^^
@ -102,13 +93,13 @@ LL | v[1 << 3];
= help: consider using `.get(n)` or `.get_mut(n)` instead = help: consider using `.get(n)` or `.get_mut(n)` instead
error: index is out of bounds error: index is out of bounds
--> $DIR/indexing_slicing_index.rs:70:5 --> $DIR/indexing_slicing_index.rs:68:5
| |
LL | x[N]; LL | x[N];
| ^^^^ | ^^^^
error: indexing may panic error: indexing may panic
--> $DIR/indexing_slicing_index.rs:73:5 --> $DIR/indexing_slicing_index.rs:71:5
| |
LL | v[N]; LL | v[N];
| ^^^^ | ^^^^
@ -116,7 +107,7 @@ LL | v[N];
= help: consider using `.get(n)` or `.get_mut(n)` instead = help: consider using `.get(n)` or `.get_mut(n)` instead
error: indexing may panic error: indexing may panic
--> $DIR/indexing_slicing_index.rs:75:5 --> $DIR/indexing_slicing_index.rs:73:5
| |
LL | v[M]; LL | v[M];
| ^^^^ | ^^^^
@ -124,17 +115,11 @@ LL | v[M];
= help: consider using `.get(n)` or `.get_mut(n)` instead = help: consider using `.get(n)` or `.get_mut(n)` instead
error: index is out of bounds error: index is out of bounds
--> $DIR/indexing_slicing_index.rs:79:13 --> $DIR/indexing_slicing_index.rs:77:13
| |
LL | let _ = x[4]; LL | let _ = x[4];
| ^^^^ | ^^^^
error[E0080]: evaluation of constant value failed error: aborting due to 15 previous errors
--> $DIR/indexing_slicing_index.rs:16:24
|
LL | const REF_ERR: &i32 = &ARR[idx4()]; // Ok, let rustc handle const contexts.
| ^^^^^^^^^^^ index out of bounds: the length is 2 but the index is 4
error: aborting due to 17 previous errors
For more information about this error, try `rustc --explain E0080`. For more information about this error, try `rustc --explain E0080`.