mirror of
https://github.com/rust-lang/rust.git
synced 2025-05-02 13:07:37 +00:00
7d4d09eeeb
Previously, we included a redundant prefix on the panic message and a postfix of the location of the panic. The prefix didn't carry any additional information beyond "something failed", and the location of the panic is redundant with the diagnostic's span, which gets printed out even if its code is not shown.
```
error[E0080]: evaluation of constant value failed
--> $DIR/assert-type-intrinsics.rs:11:9
|
LL | MaybeUninit::<!>::uninit().assume_init();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ evaluation panicked: aborted execution: attempted to instantiate uninhabited type `!`
```
```
error[E0080]: evaluation of `Fail::<i32>::C` failed
--> $DIR/collect-in-dead-closure.rs:9:19
|
LL | const C: () = panic!();
| ^^^^^^^^ evaluation panicked: explicit panic
|
= note: this error originates in the macro
`$crate::panic::panic_2015` which comes from the expansion of the macro
`panic` (in Nightly builds, run with -Z macro-backtrace for more info)
```
```
error[E0080]: evaluation of constant value failed
--> $DIR/uninhabited.rs:41:9
|
LL | assert!(false);
| ^^^^^^^^^^^^^^ evaluation panicked: assertion failed: false
|
= note: this error originates in the macro `assert` (in Nightly builds, run with -Z macro-backtrace for more info)
```
---
When the primary span for a const error is the same as the first frame in the const error report, skip it.
```
error[E0080]: evaluation of constant value failed
--> $DIR/issue-88434-removal-index-should-be-less.rs:3:24
|
LL | const _CONST: &[u8] = &f(&[], |_| {});
| ^^^^^^^^^^^^^^ evaluation panicked: explicit panic
|
note: inside `f::<{closure@$DIR/issue-88434-removal-index-should-be-less.rs:3:31: 3:34}>`
--> $DIR/issue-88434-removal-index-should-be-less.rs:10:5
|
LL | panic!()
| ^^^^^^^^ the failure occurred here
= note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
```
instead of
```
error[E0080]: evaluation of constant value failed
--> $DIR/issue-88434-removal-index-should-be-less.rs:10:5
|
LL | panic!()
| ^^^^^^^^ explicit panic
|
note: inside `f::<{closure@$DIR/issue-88434-removal-index-should-be-less.rs:3:31: 3:34}>`
--> $DIR/issue-88434-removal-index-should-be-less.rs:10:5
|
LL | panic!()
| ^^^^^^^^
note: inside `_CONST`
--> $DIR/issue-88434-removal-index-should-be-less.rs:3:24
|
LL | const _CONST: &[u8] = &f(&[], |_| {});
| ^^^^^^^^^^^^^^
= note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
```
---
Revert order of constant evaluation errors
Point at the code the user wrote first and std functions last.
```
error[E0080]: evaluation of constant value failed
--> $DIR/const-errs-dont-conflict-103369.rs:5:25
|
LL | impl ConstGenericTrait<{my_fn(1)}> for () {}
| ^^^^^^^^ evaluation panicked: Some error occurred
|
note: called from `my_fn`
--> $DIR/const-errs-dont-conflict-103369.rs:10:5
|
LL | panic!("Some error occurred");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
= note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
```
instead of
```
error[E0080]: evaluation of constant value failed
--> $DIR/const-errs-dont-conflict-103369.rs:10:5
|
LL | panic!("Some error occurred");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Some error occurred
|
note: called from `<() as ConstGenericTrait<{my_fn(1)}>>::{constant#0}`
--> $DIR/const-errs-dont-conflict-103369.rs:5:25
|
LL | impl ConstGenericTrait<{my_fn(1)}> for () {}
| ^^^^^^^^
= note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
```
131 lines
6.9 KiB
Plaintext
131 lines
6.9 KiB
Plaintext
error[E0080]: it is undefined behavior to use this value
|
|
--> $DIR/ub-enum.rs:27:1
|
|
|
|
|
LL | const BAD_ENUM: Enum = unsafe { mem::transmute(1usize) };
|
|
| ^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-tag>: encountered 0x01, but expected a valid enum tag
|
|
|
|
|
= 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) {
|
|
HEX_DUMP
|
|
}
|
|
|
|
error[E0080]: evaluation of constant value failed
|
|
--> $DIR/ub-enum.rs:30:1
|
|
|
|
|
LL | const BAD_ENUM_PTR: Enum = unsafe { mem::transmute(&1) };
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into integer
|
|
|
|
|
= help: this code performed an operation that depends on the underlying bytes representing a pointer
|
|
= help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
|
|
|
|
error[E0080]: evaluation of constant value failed
|
|
--> $DIR/ub-enum.rs:33:1
|
|
|
|
|
LL | const BAD_ENUM_WRAPPED: Wrap<Enum> = unsafe { mem::transmute(&1) };
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into integer
|
|
|
|
|
= help: this code performed an operation that depends on the underlying bytes representing a pointer
|
|
= help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
|
|
|
|
error[E0080]: it is undefined behavior to use this value
|
|
--> $DIR/ub-enum.rs:45:1
|
|
|
|
|
LL | const BAD_ENUM2: Enum2 = unsafe { mem::transmute(0usize) };
|
|
| ^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-tag>: encountered 0x0, but expected a valid enum tag
|
|
|
|
|
= 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) {
|
|
HEX_DUMP
|
|
}
|
|
|
|
error[E0080]: evaluation of constant value failed
|
|
--> $DIR/ub-enum.rs:47:1
|
|
|
|
|
LL | const BAD_ENUM2_PTR: Enum2 = unsafe { mem::transmute(&0) };
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into integer
|
|
|
|
|
= help: this code performed an operation that depends on the underlying bytes representing a pointer
|
|
= help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
|
|
|
|
error[E0080]: evaluation of constant value failed
|
|
--> $DIR/ub-enum.rs:50:1
|
|
|
|
|
LL | const BAD_ENUM2_WRAPPED: Wrap<Enum2> = unsafe { mem::transmute(&0) };
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into integer
|
|
|
|
|
= help: this code performed an operation that depends on the underlying bytes representing a pointer
|
|
= help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
|
|
|
|
error[E0080]: evaluation of constant value failed
|
|
--> $DIR/ub-enum.rs:59:42
|
|
|
|
|
LL | const BAD_ENUM2_UNDEF : Enum2 = unsafe { MaybeUninit { uninit: () }.init };
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
|
|
|
|
error[E0080]: evaluation of constant value failed
|
|
--> $DIR/ub-enum.rs:64:1
|
|
|
|
|
LL | const BAD_ENUM2_OPTION_PTR: Option<Enum2> = unsafe { mem::transmute(&0) };
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into integer
|
|
|
|
|
= help: this code performed an operation that depends on the underlying bytes representing a pointer
|
|
= help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
|
|
|
|
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-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) {
|
|
HEX_DUMP
|
|
}
|
|
|
|
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-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) {
|
|
HEX_DUMP
|
|
}
|
|
|
|
error[E0080]: it is undefined behavior to use this value
|
|
--> $DIR/ub-enum.rs:91:1
|
|
|
|
|
LL | const BAD_OPTION_CHAR: Option<(char, char)> = Some(('x', unsafe { mem::transmute(!0u32) }));
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(Some)>.0.1: encountered 0xffffffff, but expected a valid unicode scalar value (in `0..=0x10FFFF` but not in `0xD800..=0xDFFF`)
|
|
|
|
|
= 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) {
|
|
HEX_DUMP
|
|
}
|
|
|
|
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-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-tag>: encountered an uninhabited enum variant
|
|
|
|
error[E0080]: evaluation of constant value failed
|
|
--> $DIR/ub-enum.rs:103:14
|
|
|
|
|
LL | unsafe { std::mem::discriminant(&*(&() as *const () as *const Never)); };
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ read discriminant of an uninhabited enum variant
|
|
|
|
|
note: inside `discriminant::<Never>`
|
|
--> $SRC_DIR/core/src/mem/mod.rs:LL:COL
|
|
|
|
error: aborting due to 14 previous errors
|
|
|
|
For more information about this error, try `rustc --explain E0080`.
|