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This commit is contained in:
Ralf Jung 2023-07-24 19:42:21 +02:00
parent 14a674c88c
commit 4ea2bd1c8f
4 changed files with 24 additions and 11 deletions
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2
src/tools/clippy/tests/ui/self_assignment.rs
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@ -14,7 +14,7 @@ pub fn positives(mut a: usize, b: &mut u32, mut s: S) {
*b = *b;
s = s;
s.a = s.a;
s.b[10] = s.b[5 + 5];
s.b[9] = s.b[5 + 4];
s.c[0][1] = s.c[0][1];
s.b[a] = s.b[a];
*s.e = *s.e;

6
src/tools/clippy/tests/ui/self_assignment.stderr
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@ -24,11 +24,11 @@ error: self-assignment of `s.a` to `s.a`
LL | s.a = s.a;
| ^^^^^^^^^
error: self-assignment of `s.b[5 + 5]` to `s.b[10]`
error: self-assignment of `s.b[5 + 4]` to `s.b[9]`
--> $DIR/self_assignment.rs:17:5
|
LL | s.b[10] = s.b[5 + 5];
| ^^^^^^^^^^^^^^^^^^^^
LL | s.b[9] = s.b[5 + 4];
| ^^^^^^^^^^^^^^^^^^^
error: self-assignment of `s.c[0][1]` to `s.c[0][1]`
--> $DIR/self_assignment.rs:18:5

4
tests/ui/consts/const-eval/raw-bytes.32bit.stderr
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@ -24,7 +24,7 @@ error[E0080]: it is undefined behavior to use this value
--> $DIR/raw-bytes.rs:42:1
|
LL | const BAD_UNINHABITED_VARIANT1: UninhDiscriminant = unsafe { mem::transmute(1u8) };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(B)>.0: encountered a value of the never type `!`
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-tag>: encountered an uninhabited enum variant
|
= note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rustc repository if you believe it should not be considered undefined behavior.
= note: the raw bytes of the constant (size: 1, align: 1) {
@ -35,7 +35,7 @@ error[E0080]: it is undefined behavior to use this value
--> $DIR/raw-bytes.rs:44:1
|
LL | const BAD_UNINHABITED_VARIANT2: UninhDiscriminant = unsafe { mem::transmute(3u8) };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(D)>.0: encountered a value of uninhabited type `Never`
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-tag>: encountered an uninhabited enum variant
|
= note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rustc repository if you believe it should not be considered undefined behavior.
= note: the raw bytes of the constant (size: 1, align: 1) {

23
tests/ui/consts/const-eval/ub-enum.32bit.stderr
View File

@ -75,7 +75,7 @@ error[E0080]: it is undefined behavior to use this value
--> $DIR/ub-enum.rs:81:1
|
LL | const BAD_UNINHABITED_VARIANT1: UninhDiscriminant = unsafe { mem::transmute(1u8) };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(B)>.0: encountered a value of the never type `!`
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-tag>: encountered an uninhabited enum variant
|
= note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rustc repository if you believe it should not be considered undefined behavior.
= note: the raw bytes of the constant (size: $SIZE, align: $ALIGN) {
@ -86,7 +86,7 @@ error[E0080]: it is undefined behavior to use this value
--> $DIR/ub-enum.rs:83:1
|
LL | const BAD_UNINHABITED_VARIANT2: UninhDiscriminant = unsafe { mem::transmute(3u8) };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(D)>.0: encountered a value of uninhabited type `Never`
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-tag>: encountered an uninhabited enum variant
|
= note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rustc repository if you believe it should not be considered undefined behavior.
= note: the raw bytes of the constant (size: $SIZE, align: $ALIGN) {
@ -108,14 +108,27 @@ error[E0080]: evaluation of constant value failed
--> $DIR/ub-enum.rs:96:77
|
LL | const BAD_UNINHABITED_WITH_DATA1: Result<(i32, Never), (i32, !)> = unsafe { mem::transmute(0u64) };
| ^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(Ok)>.0.1: encountered a value of uninhabited type `Never`
| ^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-tag>: encountered an uninhabited enum variant
error[E0080]: evaluation of constant value failed
--> $DIR/ub-enum.rs:98:77
|
LL | const BAD_UNINHABITED_WITH_DATA2: Result<(i32, !), (i32, Never)> = unsafe { mem::transmute(0u64) };
| ^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(Ok)>.0.1: encountered a value of the never type `!`
| ^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-tag>: encountered an uninhabited enum variant
error: aborting due to 13 previous errors
error[E0080]: evaluation of constant value failed
--> $SRC_DIR/core/src/mem/mod.rs:LL:COL
|
= note: read discriminant of an uninhabited enum variant
|
note: inside `discriminant::<Never>`
--> $SRC_DIR/core/src/mem/mod.rs:LL:COL
note: inside `TEST_ICE_89765`
--> $DIR/ub-enum.rs:103:14
|
LL | unsafe { std::mem::discriminant(&*(&() as *const () as *const Never)); };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: aborting due to 14 previous errors
For more information about this error, try `rustc --explain E0080`.