diff options
Diffstat (limited to 'src/test/ui/consts/const-eval')
43 files changed, 359 insertions, 181 deletions
diff --git a/src/test/ui/consts/const-eval/const-eval-intrinsic-promotion.stderr b/src/test/ui/consts/const-eval/const-eval-intrinsic-promotion.stderr index 78143042e..ed6a6ee6e 100644 --- a/src/test/ui/consts/const-eval/const-eval-intrinsic-promotion.stderr +++ b/src/test/ui/consts/const-eval/const-eval-intrinsic-promotion.stderr @@ -4,7 +4,7 @@ error[E0716]: temporary value dropped while borrowed LL | let x: &'static usize = | -------------- type annotation requires that borrow lasts for `'static` LL | &std::intrinsics::size_of::<i32>(); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary value which is freed while still in use LL | } | - temporary value is freed at the end of this statement diff --git a/src/test/ui/consts/const-eval/const-eval-overflow-3b.stderr b/src/test/ui/consts/const-eval/const-eval-overflow-3b.stderr index c685922c4..f19917001 100644 --- a/src/test/ui/consts/const-eval/const-eval-overflow-3b.stderr +++ b/src/test/ui/consts/const-eval/const-eval-overflow-3b.stderr @@ -12,15 +12,10 @@ LL | = [0; (i8::MAX + 1u8) as usize]; | = help: the trait `~const Add<u8>` is not implemented for `i8` = help: the following other types implement trait `Add<Rhs>`: - <&'a f32 as Add<f32>> - <&'a f64 as Add<f64>> - <&'a i128 as Add<i128>> - <&'a i16 as Add<i16>> - <&'a i32 as Add<i32>> - <&'a i64 as Add<i64>> <&'a i8 as Add<i8>> - <&'a isize as Add<isize>> - and 48 others + <&i8 as Add<&i8>> + <i8 as Add<&i8>> + <i8 as Add> error: aborting due to 2 previous errors diff --git a/src/test/ui/consts/const-eval/const-eval-overflow-4b.stderr b/src/test/ui/consts/const-eval/const-eval-overflow-4b.stderr index b39607924..1f8e40231 100644 --- a/src/test/ui/consts/const-eval/const-eval-overflow-4b.stderr +++ b/src/test/ui/consts/const-eval/const-eval-overflow-4b.stderr @@ -12,15 +12,10 @@ LL | : [u32; (i8::MAX as i8 + 1u8) as usize] | = help: the trait `~const Add<u8>` is not implemented for `i8` = help: the following other types implement trait `Add<Rhs>`: - <&'a f32 as Add<f32>> - <&'a f64 as Add<f64>> - <&'a i128 as Add<i128>> - <&'a i16 as Add<i16>> - <&'a i32 as Add<i32>> - <&'a i64 as Add<i64>> <&'a i8 as Add<i8>> - <&'a isize as Add<isize>> - and 48 others + <&i8 as Add<&i8>> + <i8 as Add<&i8>> + <i8 as Add> error[E0604]: only `u8` can be cast as `char`, not `i8` --> $DIR/const-eval-overflow-4b.rs:22:13 diff --git a/src/test/ui/consts/const-eval/const_fn_ptr_fail2.stderr b/src/test/ui/consts/const-eval/const_fn_ptr_fail2.stderr index 3784a3861..0734f479f 100644 --- a/src/test/ui/consts/const-eval/const_fn_ptr_fail2.stderr +++ b/src/test/ui/consts/const-eval/const_fn_ptr_fail2.stderr @@ -2,25 +2,35 @@ error[E0080]: evaluation of constant value failed --> $DIR/const_fn_ptr_fail2.rs:9:5 | LL | x(y) + | ^^^^ calling non-const function `double` + | +note: inside `bar` + --> $DIR/const_fn_ptr_fail2.rs:9:5 + | +LL | x(y) | ^^^^ - | | - | calling non-const function `double` - | inside `bar` at $DIR/const_fn_ptr_fail2.rs:9:5 -... +note: inside `Y` + --> $DIR/const_fn_ptr_fail2.rs:14:18 + | LL | const Y: usize = bar(X, 2); // FIXME: should fail to typeck someday - | --------- inside `Y` at $DIR/const_fn_ptr_fail2.rs:14:18 + | ^^^^^^^^^ error[E0080]: evaluation of constant value failed --> $DIR/const_fn_ptr_fail2.rs:9:5 | LL | x(y) + | ^^^^ calling non-const function `double` + | +note: inside `bar` + --> $DIR/const_fn_ptr_fail2.rs:9:5 + | +LL | x(y) | ^^^^ - | | - | calling non-const function `double` - | inside `bar` at $DIR/const_fn_ptr_fail2.rs:9:5 -... +note: inside `Z` + --> $DIR/const_fn_ptr_fail2.rs:15:18 + | LL | const Z: usize = bar(double, 2); // FIXME: should fail to typeck someday - | -------------- inside `Z` at $DIR/const_fn_ptr_fail2.rs:15:18 + | ^^^^^^^^^^^^^^ warning: skipping const checks | diff --git a/src/test/ui/consts/const-eval/const_panic_track_caller.stderr b/src/test/ui/consts/const-eval/const_panic_track_caller.stderr index 5c3b412d3..846458176 100644 --- a/src/test/ui/consts/const-eval/const_panic_track_caller.stderr +++ b/src/test/ui/consts/const-eval/const_panic_track_caller.stderr @@ -2,13 +2,18 @@ error[E0080]: evaluation of constant value failed --> $DIR/const_panic_track_caller.rs:15:5 | LL | b() + | ^^^ the evaluated program panicked at 'hey', $DIR/const_panic_track_caller.rs:15:5 + | +note: inside `c` + --> $DIR/const_panic_track_caller.rs:15:5 + | +LL | b() | ^^^ - | | - | the evaluated program panicked at 'hey', $DIR/const_panic_track_caller.rs:15:5 - | inside `c` at $DIR/const_panic_track_caller.rs:15:5 -... +note: inside `X` + --> $DIR/const_panic_track_caller.rs:21:16 + | LL | const X: u32 = c(); - | --- inside `X` at $DIR/const_panic_track_caller.rs:21:16 + | ^^^ error: aborting due to previous error diff --git a/src/test/ui/consts/const-eval/dont_promote_unstable_const_fn.stderr b/src/test/ui/consts/const-eval/dont_promote_unstable_const_fn.stderr index 69e3ca716..2e697b219 100644 --- a/src/test/ui/consts/const-eval/dont_promote_unstable_const_fn.stderr +++ b/src/test/ui/consts/const-eval/dont_promote_unstable_const_fn.stderr @@ -10,7 +10,7 @@ error[E0716]: temporary value dropped while borrowed --> $DIR/dont_promote_unstable_const_fn.rs:17:28 | LL | let _: &'static u32 = &foo(); - | ------------ ^^^^^ creates a temporary which is freed while still in use + | ------------ ^^^^^ creates a temporary value which is freed while still in use | | | type annotation requires that borrow lasts for `'static` LL | } @@ -20,7 +20,7 @@ error[E0716]: temporary value dropped while borrowed --> $DIR/dont_promote_unstable_const_fn.rs:21:28 | LL | let _: &'static u32 = &meh(); - | ------------ ^^^^^ creates a temporary which is freed while still in use + | ------------ ^^^^^ creates a temporary value which is freed while still in use | | | type annotation requires that borrow lasts for `'static` ... @@ -31,7 +31,7 @@ error[E0716]: temporary value dropped while borrowed --> $DIR/dont_promote_unstable_const_fn.rs:22:26 | LL | let x: &'static _ = &std::time::Duration::from_millis(42).subsec_millis(); - | ---------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use + | ---------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary value which is freed while still in use | | | type annotation requires that borrow lasts for `'static` LL | diff --git a/src/test/ui/consts/const-eval/dont_promote_unstable_const_fn_cross_crate.stderr b/src/test/ui/consts/const-eval/dont_promote_unstable_const_fn_cross_crate.stderr index 129f06151..aa742d784 100644 --- a/src/test/ui/consts/const-eval/dont_promote_unstable_const_fn_cross_crate.stderr +++ b/src/test/ui/consts/const-eval/dont_promote_unstable_const_fn_cross_crate.stderr @@ -2,7 +2,7 @@ error[E0716]: temporary value dropped while borrowed --> $DIR/dont_promote_unstable_const_fn_cross_crate.rs:8:28 | LL | let _: &'static u32 = &foo(); - | ------------ ^^^^^ creates a temporary which is freed while still in use + | ------------ ^^^^^ creates a temporary value which is freed while still in use | | | type annotation requires that borrow lasts for `'static` LL | let _x: &'static u32 = &foo(); @@ -13,7 +13,7 @@ error[E0716]: temporary value dropped while borrowed --> $DIR/dont_promote_unstable_const_fn_cross_crate.rs:9:29 | LL | let _x: &'static u32 = &foo(); - | ------------ ^^^^^ creates a temporary which is freed while still in use + | ------------ ^^^^^ creates a temporary value which is freed while still in use | | | type annotation requires that borrow lasts for `'static` LL | } diff --git a/src/test/ui/consts/const-eval/erroneous-const.rs b/src/test/ui/consts/const-eval/erroneous-const.rs index cf11531ba..e0fd057a2 100644 --- a/src/test/ui/consts/const-eval/erroneous-const.rs +++ b/src/test/ui/consts/const-eval/erroneous-const.rs @@ -10,7 +10,7 @@ const fn no_codegen<T>() { if false { // This bad constant is only used in dead code in a no-codegen function... and yet we still // must make sure that the build fails. - let _ = PrintName::<T>::VOID; //~ERROR could not evaluate static initializer + let _ = PrintName::<T>::VOID; //~ constant } } diff --git a/src/test/ui/consts/const-eval/erroneous-const.stderr b/src/test/ui/consts/const-eval/erroneous-const.stderr index 33579135d..03030392a 100644 --- a/src/test/ui/consts/const-eval/erroneous-const.stderr +++ b/src/test/ui/consts/const-eval/erroneous-const.stderr @@ -4,18 +4,12 @@ error[E0080]: evaluation of `PrintName::<i32>::VOID` failed LL | const VOID: () = [()][2]; | ^^^^^^^ index out of bounds: the length is 1 but the index is 2 -error[E0080]: could not evaluate static initializer +note: erroneous constant used --> $DIR/erroneous-const.rs:13:17 | LL | let _ = PrintName::<T>::VOID; | ^^^^^^^^^^^^^^^^^^^^ - | | - | referenced constant has errors - | inside `no_codegen::<i32>` at $DIR/erroneous-const.rs:13:17 -... -LL | pub static FOO: () = no_codegen::<i32>(); - | ------------------- inside `FOO` at $DIR/erroneous-const.rs:17:22 -error: aborting due to 2 previous errors +error: aborting due to previous error For more information about this error, try `rustc --explain E0080`. diff --git a/src/test/ui/consts/const-eval/erroneous-const2.rs b/src/test/ui/consts/const-eval/erroneous-const2.rs index 2fbf7be88..15c0f9107 100644 --- a/src/test/ui/consts/const-eval/erroneous-const2.rs +++ b/src/test/ui/consts/const-eval/erroneous-const2.rs @@ -10,7 +10,7 @@ pub static FOO: () = { if false { // This bad constant is only used in dead code in a static initializer... and yet we still // must make sure that the build fails. - let _ = PrintName::<i32>::VOID; //~ERROR could not evaluate static initializer + let _ = PrintName::<i32>::VOID; //~ constant } }; diff --git a/src/test/ui/consts/const-eval/erroneous-const2.stderr b/src/test/ui/consts/const-eval/erroneous-const2.stderr index 630b1cf16..8626f4d78 100644 --- a/src/test/ui/consts/const-eval/erroneous-const2.stderr +++ b/src/test/ui/consts/const-eval/erroneous-const2.stderr @@ -4,12 +4,12 @@ error[E0080]: evaluation of `PrintName::<i32>::VOID` failed LL | const VOID: () = [()][2]; | ^^^^^^^ index out of bounds: the length is 1 but the index is 2 -error[E0080]: could not evaluate static initializer +note: erroneous constant used --> $DIR/erroneous-const2.rs:13:17 | LL | let _ = PrintName::<i32>::VOID; - | ^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors + | ^^^^^^^^^^^^^^^^^^^^^^ -error: aborting due to 2 previous errors +error: aborting due to previous error For more information about this error, try `rustc --explain E0080`. diff --git a/src/test/ui/consts/const-eval/format.rs b/src/test/ui/consts/const-eval/format.rs index 3eef0d6c3..0d8b7c12d 100644 --- a/src/test/ui/consts/const-eval/format.rs +++ b/src/test/ui/consts/const-eval/format.rs @@ -1,8 +1,6 @@ const fn failure() { panic!("{:?}", 0); //~^ ERROR cannot call non-const formatting macro in constant functions - //~| ERROR erroneous constant used - //~| ERROR erroneous constant used } const fn print() { @@ -10,8 +8,6 @@ const fn print() { //~^ ERROR cannot call non-const formatting macro in constant functions //~| ERROR `Arguments::<'a>::new_v1` is not yet stable as a const fn //~| ERROR cannot call non-const fn `_print` in constant functions - //~| ERROR erroneous constant used - //~| ERROR erroneous constant used } fn main() {} diff --git a/src/test/ui/consts/const-eval/format.stderr b/src/test/ui/consts/const-eval/format.stderr index 64c769648..4bf39db58 100644 --- a/src/test/ui/consts/const-eval/format.stderr +++ b/src/test/ui/consts/const-eval/format.stderr @@ -8,7 +8,7 @@ LL | panic!("{:?}", 0); = note: this error originates in the macro `$crate::const_format_args` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0015]: cannot call non-const formatting macro in constant functions - --> $DIR/format.rs:9:22 + --> $DIR/format.rs:7:22 | LL | println!("{:?}", 0); | ^ @@ -17,7 +17,7 @@ LL | println!("{:?}", 0); = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) error: `Arguments::<'a>::new_v1` is not yet stable as a const fn - --> $DIR/format.rs:9:5 + --> $DIR/format.rs:7:5 | LL | println!("{:?}", 0); | ^^^^^^^^^^^^^^^^^^^ @@ -26,7 +26,7 @@ LL | println!("{:?}", 0); = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0015]: cannot call non-const fn `_print` in constant functions - --> $DIR/format.rs:9:5 + --> $DIR/format.rs:7:5 | LL | println!("{:?}", 0); | ^^^^^^^^^^^^^^^^^^^ @@ -34,35 +34,62 @@ LL | println!("{:?}", 0); = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants = note: this error originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) -error[E0080]: erroneous constant used +note: erroneous constant used --> $DIR/format.rs:2:12 | LL | panic!("{:?}", 0); - | ^^^^^^ referenced constant has errors + | ^^^^^^ -error[E0080]: erroneous constant used +note: erroneous constant used + --> $DIR/format.rs:2:12 + | +LL | panic!("{:?}", 0); + | ^^^^^^ + +note: erroneous constant used --> $DIR/format.rs:2:20 | LL | panic!("{:?}", 0); - | ^ referenced constant has errors + | ^ | - = note: this error originates in the macro `$crate::const_format_args` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info) + = note: this note originates in the macro `$crate::const_format_args` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info) + +note: erroneous constant used + --> $DIR/format.rs:2:20 + | +LL | panic!("{:?}", 0); + | ^ + | + = note: this note originates in the macro `$crate::const_format_args` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info) -error[E0080]: erroneous constant used - --> $DIR/format.rs:9:14 +note: erroneous constant used + --> $DIR/format.rs:7:14 | LL | println!("{:?}", 0); - | ^^^^^^ referenced constant has errors + | ^^^^^^ -error[E0080]: erroneous constant used - --> $DIR/format.rs:9:22 +note: erroneous constant used + --> $DIR/format.rs:7:14 | LL | println!("{:?}", 0); - | ^ referenced constant has errors + | ^^^^^^ + +note: erroneous constant used + --> $DIR/format.rs:7:22 | - = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) +LL | println!("{:?}", 0); + | ^ + | + = note: this note originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) + +note: erroneous constant used + --> $DIR/format.rs:7:22 + | +LL | println!("{:?}", 0); + | ^ + | + = note: this note originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) -error: aborting due to 8 previous errors +error: aborting due to 4 previous errors -Some errors have detailed explanations: E0015, E0080. -For more information about an error, try `rustc --explain E0015`. +For more information about this error, try `rustc --explain E0015`. diff --git a/src/test/ui/consts/const-eval/heap/alloc_intrinsic_errors.stderr b/src/test/ui/consts/const-eval/heap/alloc_intrinsic_errors.stderr index 2628a7845..8f3b3d5f7 100644 --- a/src/test/ui/consts/const-eval/heap/alloc_intrinsic_errors.stderr +++ b/src/test/ui/consts/const-eval/heap/alloc_intrinsic_errors.stderr @@ -1,14 +1,19 @@ error[E0080]: evaluation of constant value failed --> $DIR/alloc_intrinsic_errors.rs:9:17 | -LL | const FOO: i32 = foo(); - | ----- inside `FOO` at $DIR/alloc_intrinsic_errors.rs:6:18 -... +LL | let _ = intrinsics::const_allocate(4, 3) as *mut i32; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ align has to be a power of 2, `3` is not a power of 2 + | +note: inside `foo` + --> $DIR/alloc_intrinsic_errors.rs:9:17 + | LL | let _ = intrinsics::const_allocate(4, 3) as *mut i32; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - | | - | align has to be a power of 2, `3` is not a power of 2 - | inside `foo` at $DIR/alloc_intrinsic_errors.rs:9:17 +note: inside `FOO` + --> $DIR/alloc_intrinsic_errors.rs:6:18 + | +LL | const FOO: i32 = foo(); + | ^^^^^ error: aborting due to previous error diff --git a/src/test/ui/consts/const-eval/issue-104390.rs b/src/test/ui/consts/const-eval/issue-104390.rs new file mode 100644 index 000000000..602d81824 --- /dev/null +++ b/src/test/ui/consts/const-eval/issue-104390.rs @@ -0,0 +1,10 @@ +fn f1() -> impl Sized { & 2E } //~ ERROR expected at least one digit in exponent +fn f2() -> impl Sized { && 2E } //~ ERROR expected at least one digit in exponent +fn f3() -> impl Sized { &'a 2E } //~ ERROR expected at least one digit in exponent +//~^ ERROR borrow expressions cannot be annotated with lifetimes +fn f4() -> impl Sized { &'static 2E } //~ ERROR expected at least one digit in exponent +//~^ ERROR borrow expressions cannot be annotated with lifetimes +fn f5() -> impl Sized { *& 2E } //~ ERROR expected at least one digit in exponent +fn f6() -> impl Sized { &'_ 2E } //~ ERROR expected at least one digit in exponent +//~^ ERROR borrow expressions cannot be annotated with lifetimes +fn main() {} diff --git a/src/test/ui/consts/const-eval/issue-104390.stderr b/src/test/ui/consts/const-eval/issue-104390.stderr new file mode 100644 index 000000000..865b9996e --- /dev/null +++ b/src/test/ui/consts/const-eval/issue-104390.stderr @@ -0,0 +1,65 @@ +error: expected at least one digit in exponent + --> $DIR/issue-104390.rs:1:27 + | +LL | fn f1() -> impl Sized { & 2E } + | ^^ + +error: expected at least one digit in exponent + --> $DIR/issue-104390.rs:2:28 + | +LL | fn f2() -> impl Sized { && 2E } + | ^^ + +error: expected at least one digit in exponent + --> $DIR/issue-104390.rs:3:29 + | +LL | fn f3() -> impl Sized { &'a 2E } + | ^^ + +error: expected at least one digit in exponent + --> $DIR/issue-104390.rs:5:34 + | +LL | fn f4() -> impl Sized { &'static 2E } + | ^^ + +error: expected at least one digit in exponent + --> $DIR/issue-104390.rs:7:28 + | +LL | fn f5() -> impl Sized { *& 2E } + | ^^ + +error: expected at least one digit in exponent + --> $DIR/issue-104390.rs:8:29 + | +LL | fn f6() -> impl Sized { &'_ 2E } + | ^^ + +error: borrow expressions cannot be annotated with lifetimes + --> $DIR/issue-104390.rs:3:25 + | +LL | fn f3() -> impl Sized { &'a 2E } + | ^--^^^ + | | + | annotated with lifetime here + | help: remove the lifetime annotation + +error: borrow expressions cannot be annotated with lifetimes + --> $DIR/issue-104390.rs:5:25 + | +LL | fn f4() -> impl Sized { &'static 2E } + | ^-------^^^ + | | + | annotated with lifetime here + | help: remove the lifetime annotation + +error: borrow expressions cannot be annotated with lifetimes + --> $DIR/issue-104390.rs:8:25 + | +LL | fn f6() -> impl Sized { &'_ 2E } + | ^--^^^ + | | + | annotated with lifetime here + | help: remove the lifetime annotation + +error: aborting due to 9 previous errors + diff --git a/src/test/ui/consts/const-eval/issue-44578.rs b/src/test/ui/consts/const-eval/issue-44578.rs index 2dbe1c2bd..e4dcc6230 100644 --- a/src/test/ui/consts/const-eval/issue-44578.rs +++ b/src/test/ui/consts/const-eval/issue-44578.rs @@ -23,6 +23,5 @@ impl Foo for u16 { fn main() { println!("{}", <Bar<u16, u8> as Foo>::AMT); - //~^ ERROR evaluation of constant value failed - //~| ERROR erroneous constant used + //~^ constant } diff --git a/src/test/ui/consts/const-eval/issue-44578.stderr b/src/test/ui/consts/const-eval/issue-44578.stderr index 963381b58..0cbf54480 100644 --- a/src/test/ui/consts/const-eval/issue-44578.stderr +++ b/src/test/ui/consts/const-eval/issue-44578.stderr @@ -4,20 +4,36 @@ error[E0080]: evaluation of `<Bar<u16, u8> as Foo>::AMT` failed LL | const AMT: usize = [A::AMT][(A::AMT > B::AMT) as usize]; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ index out of bounds: the length is 1 but the index is 1 -error[E0080]: evaluation of constant value failed +note: erroneous constant used --> $DIR/issue-44578.rs:25:20 | LL | println!("{}", <Bar<u16, u8> as Foo>::AMT); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ -error[E0080]: erroneous constant used +note: erroneous constant used --> $DIR/issue-44578.rs:25:20 | LL | println!("{}", <Bar<u16, u8> as Foo>::AMT); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ | - = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) + = note: this note originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) -error: aborting due to 3 previous errors +note: erroneous constant used + --> $DIR/issue-44578.rs:25:20 + | +LL | println!("{}", <Bar<u16, u8> as Foo>::AMT); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: this note originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) + +note: erroneous constant used + --> $DIR/issue-44578.rs:25:20 + | +LL | println!("{}", <Bar<u16, u8> as Foo>::AMT); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: this note originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) + +error: aborting due to previous error For more information about this error, try `rustc --explain E0080`. diff --git a/src/test/ui/consts/const-eval/issue-50814-2.rs b/src/test/ui/consts/const-eval/issue-50814-2.rs index 49d1d8ff0..53eb7b149 100644 --- a/src/test/ui/consts/const-eval/issue-50814-2.rs +++ b/src/test/ui/consts/const-eval/issue-50814-2.rs @@ -15,7 +15,7 @@ impl<T: C> Foo<T> for A<T> { } fn foo<T: C>() -> &'static usize { - &<A<T> as Foo<T>>::BAR //~ ERROR E0080 + &<A<T> as Foo<T>>::BAR //~ constant } impl C for () { diff --git a/src/test/ui/consts/const-eval/issue-50814-2.stderr b/src/test/ui/consts/const-eval/issue-50814-2.stderr index 6604f2b9f..956f7aec9 100644 --- a/src/test/ui/consts/const-eval/issue-50814-2.stderr +++ b/src/test/ui/consts/const-eval/issue-50814-2.stderr @@ -4,11 +4,11 @@ error[E0080]: evaluation of `<A<()> as Foo<()>>::BAR` failed LL | const BAR: usize = [5, 6, 7][T::BOO]; | ^^^^^^^^^^^^^^^^^ index out of bounds: the length is 3 but the index is 42 -error[E0080]: evaluation of `foo::<()>` failed +note: erroneous constant used --> $DIR/issue-50814-2.rs:18:6 | LL | &<A<T> as Foo<T>>::BAR - | ^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors + | ^^^^^^^^^^^^^^^^^^^^^ note: the above error was encountered while instantiating `fn foo::<()>` --> $DIR/issue-50814-2.rs:30:22 @@ -16,6 +16,6 @@ note: the above error was encountered while instantiating `fn foo::<()>` LL | println!("{:x}", foo::<()>() as *const usize as usize); | ^^^^^^^^^^^ -error: aborting due to 2 previous errors +error: aborting due to previous error For more information about this error, try `rustc --explain E0080`. diff --git a/src/test/ui/consts/const-eval/issue-50814.rs b/src/test/ui/consts/const-eval/issue-50814.rs index 5a587701f..374ed1d93 100644 --- a/src/test/ui/consts/const-eval/issue-50814.rs +++ b/src/test/ui/consts/const-eval/issue-50814.rs @@ -9,16 +9,16 @@ impl Unsigned for U8 { const MAX: u8 = 0xff; } -struct Sum<A,B>(A,B); +struct Sum<A, B>(A, B); -impl<A: Unsigned, B: Unsigned> Unsigned for Sum<A,B> { +impl<A: Unsigned, B: Unsigned> Unsigned for Sum<A, B> { const MAX: u8 = A::MAX + B::MAX; //~^ ERROR evaluation of `<Sum<U8, U8> as Unsigned>::MAX` failed } fn foo<T>(_: T) -> &'static u8 { - &Sum::<U8,U8>::MAX - //~^ ERROR E0080 + &Sum::<U8, U8>::MAX + //~^ constant } fn main() { diff --git a/src/test/ui/consts/const-eval/issue-50814.stderr b/src/test/ui/consts/const-eval/issue-50814.stderr index 46dd2b89f..05b6271f4 100644 --- a/src/test/ui/consts/const-eval/issue-50814.stderr +++ b/src/test/ui/consts/const-eval/issue-50814.stderr @@ -4,11 +4,11 @@ error[E0080]: evaluation of `<Sum<U8, U8> as Unsigned>::MAX` failed LL | const MAX: u8 = A::MAX + B::MAX; | ^^^^^^^^^^^^^^^ attempt to compute `u8::MAX + u8::MAX`, which would overflow -error[E0080]: evaluation of `foo::<i32>` failed +note: erroneous constant used --> $DIR/issue-50814.rs:20:6 | -LL | &Sum::<U8,U8>::MAX - | ^^^^^^^^^^^^^^^^^ referenced constant has errors +LL | &Sum::<U8, U8>::MAX + | ^^^^^^^^^^^^^^^^^^ note: the above error was encountered while instantiating `fn foo::<i32>` --> $DIR/issue-50814.rs:25:5 @@ -16,6 +16,6 @@ note: the above error was encountered while instantiating `fn foo::<i32>` LL | foo(0); | ^^^^^^ -error: aborting due to 2 previous errors +error: aborting due to previous error For more information about this error, try `rustc --explain E0080`. diff --git a/src/test/ui/consts/const-eval/panic-assoc-never-type.rs b/src/test/ui/consts/const-eval/panic-assoc-never-type.rs index d2a840932..28edf5144 100644 --- a/src/test/ui/consts/const-eval/panic-assoc-never-type.rs +++ b/src/test/ui/consts/const-eval/panic-assoc-never-type.rs @@ -11,6 +11,5 @@ impl PrintName { } fn main() { - let _ = PrintName::VOID; - //~^ ERROR erroneous constant used [E0080] + let _ = PrintName::VOID; //~ constant } diff --git a/src/test/ui/consts/const-eval/panic-assoc-never-type.stderr b/src/test/ui/consts/const-eval/panic-assoc-never-type.stderr index 4204d302b..7c36a3a42 100644 --- a/src/test/ui/consts/const-eval/panic-assoc-never-type.stderr +++ b/src/test/ui/consts/const-eval/panic-assoc-never-type.stderr @@ -6,12 +6,18 @@ LL | const VOID: ! = panic!(); | = note: this error originates in the macro `$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]: erroneous constant used +note: erroneous constant used --> $DIR/panic-assoc-never-type.rs:14:13 | LL | let _ = PrintName::VOID; - | ^^^^^^^^^^^^^^^ referenced constant has errors + | ^^^^^^^^^^^^^^^ -error: aborting due to 2 previous errors +note: erroneous constant used + --> $DIR/panic-assoc-never-type.rs:14:13 + | +LL | let _ = PrintName::VOID; + | ^^^^^^^^^^^^^^^ + +error: aborting due to previous error For more information about this error, try `rustc --explain E0080`. diff --git a/src/test/ui/consts/const-eval/promoted_const_fn_fail.stderr b/src/test/ui/consts/const-eval/promoted_const_fn_fail.stderr index 596fa090d..2d4e7c83d 100644 --- a/src/test/ui/consts/const-eval/promoted_const_fn_fail.stderr +++ b/src/test/ui/consts/const-eval/promoted_const_fn_fail.stderr @@ -2,7 +2,7 @@ error[E0716]: temporary value dropped while borrowed --> $DIR/promoted_const_fn_fail.rs:17:27 | LL | let x: &'static u8 = &(bar() + 1); - | ----------- ^^^^^^^^^^^ creates a temporary which is freed while still in use + | ----------- ^^^^^^^^^^^ creates a temporary value which is freed while still in use | | | type annotation requires that borrow lasts for `'static` ... diff --git a/src/test/ui/consts/const-eval/promoted_const_fn_fail_deny_const_err.stderr b/src/test/ui/consts/const-eval/promoted_const_fn_fail_deny_const_err.stderr index 63dc43a41..9ebae3a18 100644 --- a/src/test/ui/consts/const-eval/promoted_const_fn_fail_deny_const_err.stderr +++ b/src/test/ui/consts/const-eval/promoted_const_fn_fail_deny_const_err.stderr @@ -2,7 +2,7 @@ error[E0716]: temporary value dropped while borrowed --> $DIR/promoted_const_fn_fail_deny_const_err.rs:18:27 | LL | let x: &'static u8 = &(bar() + 1); - | ----------- ^^^^^^^^^^^ creates a temporary which is freed while still in use + | ----------- ^^^^^^^^^^^ creates a temporary value which is freed while still in use | | | type annotation requires that borrow lasts for `'static` ... diff --git a/src/test/ui/consts/const-eval/promoted_raw_ptr_ops.stderr b/src/test/ui/consts/const-eval/promoted_raw_ptr_ops.stderr index 8ac60da38..01fcf2ec2 100644 --- a/src/test/ui/consts/const-eval/promoted_raw_ptr_ops.stderr +++ b/src/test/ui/consts/const-eval/promoted_raw_ptr_ops.stderr @@ -2,7 +2,7 @@ error[E0716]: temporary value dropped while borrowed --> $DIR/promoted_raw_ptr_ops.rs:2:29 | LL | let x: &'static bool = &(42 as *const i32 == 43 as *const i32); - | ------------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use + | ------------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary value which is freed while still in use | | | type annotation requires that borrow lasts for `'static` ... @@ -13,7 +13,7 @@ error[E0716]: temporary value dropped while borrowed --> $DIR/promoted_raw_ptr_ops.rs:4:30 | LL | let y: &'static usize = &(&1 as *const i32 as usize + 1); - | -------------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use + | -------------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary value which is freed while still in use | | | type annotation requires that borrow lasts for `'static` ... @@ -24,7 +24,7 @@ error[E0716]: temporary value dropped while borrowed --> $DIR/promoted_raw_ptr_ops.rs:6:28 | LL | let z: &'static i32 = &(unsafe { *(42 as *const i32) }); - | ------------ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use + | ------------ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary value which is freed while still in use | | | type annotation requires that borrow lasts for `'static` ... @@ -35,7 +35,7 @@ error[E0716]: temporary value dropped while borrowed --> $DIR/promoted_raw_ptr_ops.rs:8:29 | LL | let a: &'static bool = &(main as fn() == main as fn()); - | ------------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use + | ------------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary value which is freed while still in use | | | type annotation requires that borrow lasts for `'static` LL | diff --git a/src/test/ui/consts/const-eval/transmute-const-promotion.stderr b/src/test/ui/consts/const-eval/transmute-const-promotion.stderr index 15b9b56ea..434a957f6 100644 --- a/src/test/ui/consts/const-eval/transmute-const-promotion.stderr +++ b/src/test/ui/consts/const-eval/transmute-const-promotion.stderr @@ -2,7 +2,7 @@ error[E0716]: temporary value dropped while borrowed --> $DIR/transmute-const-promotion.rs:4:37 | LL | let x: &'static u32 = unsafe { &mem::transmute(3.0f32) }; - | ------------ ^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use + | ------------ ^^^^^^^^^^^^^^^^^^^^^^ creates a temporary value which is freed while still in use | | | type annotation requires that borrow lasts for `'static` LL | diff --git a/src/test/ui/consts/const-eval/ub-nonnull.32bit.stderr b/src/test/ui/consts/const-eval/ub-nonnull.32bit.stderr index dbd05b8f4..b24e0cc37 100644 --- a/src/test/ui/consts/const-eval/ub-nonnull.32bit.stderr +++ b/src/test/ui/consts/const-eval/ub-nonnull.32bit.stderr @@ -65,6 +65,17 @@ LL | const BAD_RANGE2: RestrictedRange2 = unsafe { RestrictedRange2(20) }; 14 00 00 00 │ .... } -error: aborting due to 7 previous errors +error[E0080]: it is undefined behavior to use this value + --> $DIR/ub-nonnull.rs:50:1 + | +LL | const NULL_FAT_PTR: NonNull<dyn Send> = unsafe { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered 0, but expected something greater or equal to 1 + | + = 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: 8, align: 4) { + 00 00 00 00 ╾─alloc26─╼ │ ....╾──╼ + } + +error: aborting due to 8 previous errors For more information about this error, try `rustc --explain E0080`. diff --git a/src/test/ui/consts/const-eval/ub-nonnull.64bit.stderr b/src/test/ui/consts/const-eval/ub-nonnull.64bit.stderr index 5a1ac09bd..92b8d017c 100644 --- a/src/test/ui/consts/const-eval/ub-nonnull.64bit.stderr +++ b/src/test/ui/consts/const-eval/ub-nonnull.64bit.stderr @@ -65,6 +65,17 @@ LL | const BAD_RANGE2: RestrictedRange2 = unsafe { RestrictedRange2(20) }; 14 00 00 00 │ .... } -error: aborting due to 7 previous errors +error[E0080]: it is undefined behavior to use this value + --> $DIR/ub-nonnull.rs:50:1 + | +LL | const NULL_FAT_PTR: NonNull<dyn Send> = unsafe { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered 0, but expected something greater or equal to 1 + | + = 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: 16, align: 8) { + 00 00 00 00 00 00 00 00 ╾───────alloc26───────╼ │ ........╾──────╼ + } + +error: aborting due to 8 previous errors For more information about this error, try `rustc --explain E0080`. diff --git a/src/test/ui/consts/const-eval/ub-nonnull.rs b/src/test/ui/consts/const-eval/ub-nonnull.rs index d22a99cd0..490925822 100644 --- a/src/test/ui/consts/const-eval/ub-nonnull.rs +++ b/src/test/ui/consts/const-eval/ub-nonnull.rs @@ -1,5 +1,5 @@ // stderr-per-bitwidth -#![feature(rustc_attrs)] +#![feature(rustc_attrs, ptr_metadata)] #![allow(invalid_value)] // make sure we cannot allow away the errors tested here use std::mem; @@ -47,4 +47,11 @@ struct RestrictedRange2(u32); const BAD_RANGE2: RestrictedRange2 = unsafe { RestrictedRange2(20) }; //~^ ERROR it is undefined behavior to use this value +const NULL_FAT_PTR: NonNull<dyn Send> = unsafe { +//~^ ERROR it is undefined behavior to use this value + let x: &dyn Send = &42; + let meta = std::ptr::metadata(x); + mem::transmute((0_usize, meta)) +}; + fn main() {} diff --git a/src/test/ui/consts/const-eval/ub-ref-ptr.32bit.stderr b/src/test/ui/consts/const-eval/ub-ref-ptr.32bit.stderr index 6f5c028cb..e5b5c7a84 100644 --- a/src/test/ui/consts/const-eval/ub-ref-ptr.32bit.stderr +++ b/src/test/ui/consts/const-eval/ub-ref-ptr.32bit.stderr @@ -60,14 +60,14 @@ LL | const REF_AS_USIZE_SLICE: &[usize] = &[unsafe { mem::transmute(&0) }]; = 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 +note: erroneous constant used --> $DIR/ub-ref-ptr.rs:34:38 | LL | const REF_AS_USIZE_SLICE: &[usize] = &[unsafe { mem::transmute(&0) }]; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error[E0080]: evaluation of constant value failed - --> $DIR/ub-ref-ptr.rs:38:86 + --> $DIR/ub-ref-ptr.rs:37:86 | LL | const REF_AS_USIZE_BOX_SLICE: Box<[usize]> = unsafe { mem::transmute::<&[usize], _>(&[mem::transmute(&0)]) }; | ^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes @@ -75,14 +75,14 @@ LL | const REF_AS_USIZE_BOX_SLICE: Box<[usize]> = unsafe { mem::transmute::<&[us = 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-ref-ptr.rs:38:85 +note: erroneous constant used + --> $DIR/ub-ref-ptr.rs:37:85 | LL | const REF_AS_USIZE_BOX_SLICE: Box<[usize]> = unsafe { mem::transmute::<&[usize], _>(&[mem::transmute(&0)]) }; - | ^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors + | ^^^^^^^^^^^^^^^^^^^^^ error[E0080]: it is undefined behavior to use this value - --> $DIR/ub-ref-ptr.rs:42:1 + --> $DIR/ub-ref-ptr.rs:40:1 | LL | const USIZE_AS_REF: &'static u8 = unsafe { mem::transmute(1337usize) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a dangling reference (address 0x539 is unallocated) @@ -93,7 +93,7 @@ LL | const USIZE_AS_REF: &'static u8 = unsafe { mem::transmute(1337usize) }; } error[E0080]: it is undefined behavior to use this value - --> $DIR/ub-ref-ptr.rs:45:1 + --> $DIR/ub-ref-ptr.rs:43:1 | LL | const USIZE_AS_BOX: Box<u8> = unsafe { mem::transmute(1337usize) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a dangling box (address 0x539 is unallocated) @@ -104,13 +104,13 @@ LL | const USIZE_AS_BOX: Box<u8> = unsafe { mem::transmute(1337usize) }; } error[E0080]: evaluation of constant value failed - --> $DIR/ub-ref-ptr.rs:48:41 + --> $DIR/ub-ref-ptr.rs:46:41 | LL | const UNINIT_PTR: *const i32 = unsafe { MaybeUninit { uninit: () }.init }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory error[E0080]: it is undefined behavior to use this value - --> $DIR/ub-ref-ptr.rs:52:1 + --> $DIR/ub-ref-ptr.rs:50:1 | LL | const NULL_FN_PTR: fn() = unsafe { mem::transmute(0usize) }; | ^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered null pointer, but expected a function pointer @@ -121,13 +121,13 @@ LL | const NULL_FN_PTR: fn() = unsafe { mem::transmute(0usize) }; } error[E0080]: evaluation of constant value failed - --> $DIR/ub-ref-ptr.rs:54:38 + --> $DIR/ub-ref-ptr.rs:52:38 | LL | const UNINIT_FN_PTR: fn() = unsafe { MaybeUninit { uninit: () }.init }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory error[E0080]: it is undefined behavior to use this value - --> $DIR/ub-ref-ptr.rs:57:1 + --> $DIR/ub-ref-ptr.rs:55:1 | LL | const DANGLING_FN_PTR: fn() = unsafe { mem::transmute(13usize) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered 0xd[noalloc], but expected a function pointer @@ -138,7 +138,7 @@ LL | const DANGLING_FN_PTR: fn() = unsafe { mem::transmute(13usize) }; } error[E0080]: it is undefined behavior to use this value - --> $DIR/ub-ref-ptr.rs:59:1 + --> $DIR/ub-ref-ptr.rs:57:1 | LL | const DATA_FN_PTR: fn() = unsafe { mem::transmute(&13) }; | ^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered alloc41, but expected a function pointer @@ -148,6 +148,6 @@ LL | const DATA_FN_PTR: fn() = unsafe { mem::transmute(&13) }; ╾─alloc41─╼ │ ╾──╼ } -error: aborting due to 16 previous errors +error: aborting due to 14 previous errors For more information about this error, try `rustc --explain E0080`. diff --git a/src/test/ui/consts/const-eval/ub-ref-ptr.64bit.stderr b/src/test/ui/consts/const-eval/ub-ref-ptr.64bit.stderr index 5ffb710d4..607366cab 100644 --- a/src/test/ui/consts/const-eval/ub-ref-ptr.64bit.stderr +++ b/src/test/ui/consts/const-eval/ub-ref-ptr.64bit.stderr @@ -60,14 +60,14 @@ LL | const REF_AS_USIZE_SLICE: &[usize] = &[unsafe { mem::transmute(&0) }]; = 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 +note: erroneous constant used --> $DIR/ub-ref-ptr.rs:34:38 | LL | const REF_AS_USIZE_SLICE: &[usize] = &[unsafe { mem::transmute(&0) }]; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error[E0080]: evaluation of constant value failed - --> $DIR/ub-ref-ptr.rs:38:86 + --> $DIR/ub-ref-ptr.rs:37:86 | LL | const REF_AS_USIZE_BOX_SLICE: Box<[usize]> = unsafe { mem::transmute::<&[usize], _>(&[mem::transmute(&0)]) }; | ^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes @@ -75,14 +75,14 @@ LL | const REF_AS_USIZE_BOX_SLICE: Box<[usize]> = unsafe { mem::transmute::<&[us = 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-ref-ptr.rs:38:85 +note: erroneous constant used + --> $DIR/ub-ref-ptr.rs:37:85 | LL | const REF_AS_USIZE_BOX_SLICE: Box<[usize]> = unsafe { mem::transmute::<&[usize], _>(&[mem::transmute(&0)]) }; - | ^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors + | ^^^^^^^^^^^^^^^^^^^^^ error[E0080]: it is undefined behavior to use this value - --> $DIR/ub-ref-ptr.rs:42:1 + --> $DIR/ub-ref-ptr.rs:40:1 | LL | const USIZE_AS_REF: &'static u8 = unsafe { mem::transmute(1337usize) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a dangling reference (address 0x539 is unallocated) @@ -93,7 +93,7 @@ LL | const USIZE_AS_REF: &'static u8 = unsafe { mem::transmute(1337usize) }; } error[E0080]: it is undefined behavior to use this value - --> $DIR/ub-ref-ptr.rs:45:1 + --> $DIR/ub-ref-ptr.rs:43:1 | LL | const USIZE_AS_BOX: Box<u8> = unsafe { mem::transmute(1337usize) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a dangling box (address 0x539 is unallocated) @@ -104,13 +104,13 @@ LL | const USIZE_AS_BOX: Box<u8> = unsafe { mem::transmute(1337usize) }; } error[E0080]: evaluation of constant value failed - --> $DIR/ub-ref-ptr.rs:48:41 + --> $DIR/ub-ref-ptr.rs:46:41 | LL | const UNINIT_PTR: *const i32 = unsafe { MaybeUninit { uninit: () }.init }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory error[E0080]: it is undefined behavior to use this value - --> $DIR/ub-ref-ptr.rs:52:1 + --> $DIR/ub-ref-ptr.rs:50:1 | LL | const NULL_FN_PTR: fn() = unsafe { mem::transmute(0usize) }; | ^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered null pointer, but expected a function pointer @@ -121,13 +121,13 @@ LL | const NULL_FN_PTR: fn() = unsafe { mem::transmute(0usize) }; } error[E0080]: evaluation of constant value failed - --> $DIR/ub-ref-ptr.rs:54:38 + --> $DIR/ub-ref-ptr.rs:52:38 | LL | const UNINIT_FN_PTR: fn() = unsafe { MaybeUninit { uninit: () }.init }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory error[E0080]: it is undefined behavior to use this value - --> $DIR/ub-ref-ptr.rs:57:1 + --> $DIR/ub-ref-ptr.rs:55:1 | LL | const DANGLING_FN_PTR: fn() = unsafe { mem::transmute(13usize) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered 0xd[noalloc], but expected a function pointer @@ -138,7 +138,7 @@ LL | const DANGLING_FN_PTR: fn() = unsafe { mem::transmute(13usize) }; } error[E0080]: it is undefined behavior to use this value - --> $DIR/ub-ref-ptr.rs:59:1 + --> $DIR/ub-ref-ptr.rs:57:1 | LL | const DATA_FN_PTR: fn() = unsafe { mem::transmute(&13) }; | ^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered alloc41, but expected a function pointer @@ -148,6 +148,6 @@ LL | const DATA_FN_PTR: fn() = unsafe { mem::transmute(&13) }; ╾───────alloc41───────╼ │ ╾──────╼ } -error: aborting due to 16 previous errors +error: aborting due to 14 previous errors For more information about this error, try `rustc --explain E0080`. diff --git a/src/test/ui/consts/const-eval/ub-ref-ptr.rs b/src/test/ui/consts/const-eval/ub-ref-ptr.rs index 92049d4c1..a1c812390 100644 --- a/src/test/ui/consts/const-eval/ub-ref-ptr.rs +++ b/src/test/ui/consts/const-eval/ub-ref-ptr.rs @@ -33,11 +33,9 @@ const REF_AS_USIZE: usize = unsafe { mem::transmute(&0) }; const REF_AS_USIZE_SLICE: &[usize] = &[unsafe { mem::transmute(&0) }]; //~^ ERROR evaluation of constant value failed -//~| ERROR evaluation of constant value failed const REF_AS_USIZE_BOX_SLICE: Box<[usize]> = unsafe { mem::transmute::<&[usize], _>(&[mem::transmute(&0)]) }; //~^ ERROR evaluation of constant value failed -//~| ERROR evaluation of constant value failed const USIZE_AS_REF: &'static u8 = unsafe { mem::transmute(1337usize) }; //~^ ERROR it is undefined behavior to use this value diff --git a/src/test/ui/consts/const-eval/ub-wide-ptr.32bit.stderr b/src/test/ui/consts/const-eval/ub-wide-ptr.32bit.stderr index c8b46608d..9994c2e5a 100644 --- a/src/test/ui/consts/const-eval/ub-wide-ptr.32bit.stderr +++ b/src/test/ui/consts/const-eval/ub-wide-ptr.32bit.stderr @@ -139,11 +139,11 @@ LL | const SLICE_CONTENT_INVALID: &[bool] = &[unsafe { mem::transmute(3u8) }]; ╾─allocN─╼ │ ╾──╼ } -error[E0080]: evaluation of constant value failed +note: erroneous constant used --> $DIR/ub-wide-ptr.rs:83:40 | LL | const SLICE_CONTENT_INVALID: &[bool] = &[unsafe { mem::transmute(3u8) }]; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error[E0080]: it is undefined behavior to use this value --> $DIR/ub-wide-ptr.rs:90:1 @@ -156,11 +156,11 @@ LL | const MYSLICE_PREFIX_BAD: &MySliceBool = &MySlice(unsafe { mem::transmute(3 ╾allocN─╼ │ ╾──╼ } -error[E0080]: evaluation of constant value failed +note: erroneous constant used --> $DIR/ub-wide-ptr.rs:90:42 | LL | const MYSLICE_PREFIX_BAD: &MySliceBool = &MySlice(unsafe { mem::transmute(3u8) }, [false]); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error[E0080]: it is undefined behavior to use this value --> $DIR/ub-wide-ptr.rs:94:1 @@ -173,11 +173,11 @@ LL | const MYSLICE_SUFFIX_BAD: &MySliceBool = &MySlice(true, [unsafe { mem::tran ╾allocN─╼ │ ╾──╼ } -error[E0080]: evaluation of constant value failed +note: erroneous constant used --> $DIR/ub-wide-ptr.rs:94:42 | LL | const MYSLICE_SUFFIX_BAD: &MySliceBool = &MySlice(true, [unsafe { mem::transmute(3u8) }]); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error[E0080]: evaluation of constant value failed --> $DIR/ub-wide-ptr.rs:102:1 @@ -292,6 +292,6 @@ error[E0080]: could not evaluate static initializer LL | mem::transmute::<_, &dyn Trait>((&92u8, &3u64)) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using allocN as vtable pointer but it does not point to a vtable -error: aborting due to 32 previous errors +error: aborting due to 29 previous errors For more information about this error, try `rustc --explain E0080`. diff --git a/src/test/ui/consts/const-eval/ub-wide-ptr.64bit.stderr b/src/test/ui/consts/const-eval/ub-wide-ptr.64bit.stderr index 70574d2dc..06a377d9f 100644 --- a/src/test/ui/consts/const-eval/ub-wide-ptr.64bit.stderr +++ b/src/test/ui/consts/const-eval/ub-wide-ptr.64bit.stderr @@ -139,11 +139,11 @@ LL | const SLICE_CONTENT_INVALID: &[bool] = &[unsafe { mem::transmute(3u8) }]; ╾───────allocN───────╼ │ ╾──────╼ } -error[E0080]: evaluation of constant value failed +note: erroneous constant used --> $DIR/ub-wide-ptr.rs:83:40 | LL | const SLICE_CONTENT_INVALID: &[bool] = &[unsafe { mem::transmute(3u8) }]; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error[E0080]: it is undefined behavior to use this value --> $DIR/ub-wide-ptr.rs:90:1 @@ -156,11 +156,11 @@ LL | const MYSLICE_PREFIX_BAD: &MySliceBool = &MySlice(unsafe { mem::transmute(3 ╾──────allocN───────╼ │ ╾──────╼ } -error[E0080]: evaluation of constant value failed +note: erroneous constant used --> $DIR/ub-wide-ptr.rs:90:42 | LL | const MYSLICE_PREFIX_BAD: &MySliceBool = &MySlice(unsafe { mem::transmute(3u8) }, [false]); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error[E0080]: it is undefined behavior to use this value --> $DIR/ub-wide-ptr.rs:94:1 @@ -173,11 +173,11 @@ LL | const MYSLICE_SUFFIX_BAD: &MySliceBool = &MySlice(true, [unsafe { mem::tran ╾──────allocN───────╼ │ ╾──────╼ } -error[E0080]: evaluation of constant value failed +note: erroneous constant used --> $DIR/ub-wide-ptr.rs:94:42 | LL | const MYSLICE_SUFFIX_BAD: &MySliceBool = &MySlice(true, [unsafe { mem::transmute(3u8) }]); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error[E0080]: evaluation of constant value failed --> $DIR/ub-wide-ptr.rs:102:1 @@ -292,6 +292,6 @@ error[E0080]: could not evaluate static initializer LL | mem::transmute::<_, &dyn Trait>((&92u8, &3u64)) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using allocN as vtable pointer but it does not point to a vtable -error: aborting due to 32 previous errors +error: aborting due to 29 previous errors For more information about this error, try `rustc --explain E0080`. diff --git a/src/test/ui/consts/const-eval/ub-wide-ptr.rs b/src/test/ui/consts/const-eval/ub-wide-ptr.rs index 65f6f0235..2894ef831 100644 --- a/src/test/ui/consts/const-eval/ub-wide-ptr.rs +++ b/src/test/ui/consts/const-eval/ub-wide-ptr.rs @@ -82,18 +82,18 @@ const SLICE_LENGTH_PTR_BOX: Box<[u8]> = unsafe { mem::transmute((&42u8, &3)) }; // bad data *inside* the slice const SLICE_CONTENT_INVALID: &[bool] = &[unsafe { mem::transmute(3u8) }]; //~^ ERROR it is undefined behavior to use this value -//~| ERROR evaluation of constant value failed +//~| constant // good MySliceBool const MYSLICE_GOOD: &MySliceBool = &MySlice(true, [false]); // bad: sized field is not okay const MYSLICE_PREFIX_BAD: &MySliceBool = &MySlice(unsafe { mem::transmute(3u8) }, [false]); //~^ ERROR it is undefined behavior to use this value -//~| ERROR evaluation of constant value failed +//~| constant // bad: unsized part is not okay const MYSLICE_SUFFIX_BAD: &MySliceBool = &MySlice(true, [unsafe { mem::transmute(3u8) }]); //~^ ERROR it is undefined behavior to use this value -//~| ERROR evaluation of constant value failed +//~| constant // # raw slice const RAW_SLICE_VALID: *const [u8] = unsafe { mem::transmute((&42u8, 1usize)) }; // ok diff --git a/src/test/ui/consts/const-eval/union-const-eval-field.rs b/src/test/ui/consts/const-eval/union-const-eval-field.rs index d88bf2a84..a94fcbbfa 100644 --- a/src/test/ui/consts/const-eval/union-const-eval-field.rs +++ b/src/test/ui/consts/const-eval/union-const-eval-field.rs @@ -29,7 +29,6 @@ const fn read_field3() -> Field3 { //~^ ERROR evaluation of constant value failed //~| uninitialized FIELD3 - //~^ ERROR erroneous constant used [E0080] } fn main() { diff --git a/src/test/ui/consts/const-eval/union-const-eval-field.stderr b/src/test/ui/consts/const-eval/union-const-eval-field.stderr index 00964489e..9899c56c0 100644 --- a/src/test/ui/consts/const-eval/union-const-eval-field.stderr +++ b/src/test/ui/consts/const-eval/union-const-eval-field.stderr @@ -4,12 +4,18 @@ error[E0080]: evaluation of constant value failed LL | const FIELD3: Field3 = unsafe { UNION.field3 }; | ^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory -error[E0080]: erroneous constant used +note: erroneous constant used --> $DIR/union-const-eval-field.rs:31:5 | LL | FIELD3 - | ^^^^^^ referenced constant has errors + | ^^^^^^ -error: aborting due to 2 previous errors +note: erroneous constant used + --> $DIR/union-const-eval-field.rs:31:5 + | +LL | FIELD3 + | ^^^^^^ + +error: aborting due to previous error For more information about this error, try `rustc --explain E0080`. diff --git a/src/test/ui/consts/const-eval/union_promotion.stderr b/src/test/ui/consts/const-eval/union_promotion.stderr index 70808c520..42f17de20 100644 --- a/src/test/ui/consts/const-eval/union_promotion.stderr +++ b/src/test/ui/consts/const-eval/union_promotion.stderr @@ -7,7 +7,7 @@ LL | let x: &'static bool = &unsafe { | | type annotation requires that borrow lasts for `'static` LL | | Foo { a: &1 }.b == Foo { a: &2 }.b LL | | }; - | |_____^ creates a temporary which is freed while still in use + | |_____^ creates a temporary value which is freed while still in use LL | } | - temporary value is freed at the end of this statement diff --git a/src/test/ui/consts/const-eval/unwind-abort.stderr b/src/test/ui/consts/const-eval/unwind-abort.stderr index 99178ae8c..759ce15ab 100644 --- a/src/test/ui/consts/const-eval/unwind-abort.stderr +++ b/src/test/ui/consts/const-eval/unwind-abort.stderr @@ -2,14 +2,18 @@ error[E0080]: evaluation of constant value failed --> $DIR/unwind-abort.rs:4:5 | LL | panic!() + | ^^^^^^^^ the evaluated program panicked at 'explicit panic', $DIR/unwind-abort.rs:4:5 + | +note: inside `foo` + --> $DIR/unwind-abort.rs:4:5 + | +LL | panic!() | ^^^^^^^^ - | | - | the evaluated program panicked at 'explicit panic', $DIR/unwind-abort.rs:4:5 - | inside `foo` at $SRC_DIR/std/src/panic.rs:LL:COL -... -LL | const _: () = foo(); - | ----- inside `_` at $DIR/unwind-abort.rs:7:15 +note: inside `_` + --> $DIR/unwind-abort.rs:7:15 | +LL | const _: () = foo(); + | ^^^^^ = note: this error originates in the macro `$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: aborting due to previous error diff --git a/src/test/ui/consts/const-eval/validate_uninhabited_zsts.32bit.stderr b/src/test/ui/consts/const-eval/validate_uninhabited_zsts.32bit.stderr index 63639729a..9710bf476 100644 --- a/src/test/ui/consts/const-eval/validate_uninhabited_zsts.32bit.stderr +++ b/src/test/ui/consts/const-eval/validate_uninhabited_zsts.32bit.stderr @@ -14,13 +14,18 @@ error[E0080]: evaluation of constant value failed --> $DIR/validate_uninhabited_zsts.rs:4:14 | LL | unsafe { std::mem::transmute(()) } + | ^^^^^^^^^^^^^^^^^^^^^^^ transmuting to uninhabited type + | +note: inside `foo` + --> $DIR/validate_uninhabited_zsts.rs:4:14 + | +LL | unsafe { std::mem::transmute(()) } | ^^^^^^^^^^^^^^^^^^^^^^^ - | | - | transmuting to uninhabited type - | inside `foo` at $DIR/validate_uninhabited_zsts.rs:4:14 -... +note: inside `FOO` + --> $DIR/validate_uninhabited_zsts.rs:19:33 + | LL | const FOO: [empty::Empty; 3] = [foo(); 3]; - | ----- inside `FOO` at $DIR/validate_uninhabited_zsts.rs:19:33 + | ^^^^^ error[E0080]: it is undefined behavior to use this value --> $DIR/validate_uninhabited_zsts.rs:21:1 @@ -40,6 +45,11 @@ LL | const BAR: [empty::Empty; 3] = [unsafe { std::mem::transmute(()) }; 3]; | this code causes undefined behavior when executed | help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done | +note: in this struct field + --> $DIR/validate_uninhabited_zsts.rs:16:22 + | +LL | pub struct Empty(Void); + | ^^^^ note: enums with no inhabited variants have no valid value --> $DIR/validate_uninhabited_zsts.rs:13:5 | diff --git a/src/test/ui/consts/const-eval/validate_uninhabited_zsts.64bit.stderr b/src/test/ui/consts/const-eval/validate_uninhabited_zsts.64bit.stderr index 63639729a..9710bf476 100644 --- a/src/test/ui/consts/const-eval/validate_uninhabited_zsts.64bit.stderr +++ b/src/test/ui/consts/const-eval/validate_uninhabited_zsts.64bit.stderr @@ -14,13 +14,18 @@ error[E0080]: evaluation of constant value failed --> $DIR/validate_uninhabited_zsts.rs:4:14 | LL | unsafe { std::mem::transmute(()) } + | ^^^^^^^^^^^^^^^^^^^^^^^ transmuting to uninhabited type + | +note: inside `foo` + --> $DIR/validate_uninhabited_zsts.rs:4:14 + | +LL | unsafe { std::mem::transmute(()) } | ^^^^^^^^^^^^^^^^^^^^^^^ - | | - | transmuting to uninhabited type - | inside `foo` at $DIR/validate_uninhabited_zsts.rs:4:14 -... +note: inside `FOO` + --> $DIR/validate_uninhabited_zsts.rs:19:33 + | LL | const FOO: [empty::Empty; 3] = [foo(); 3]; - | ----- inside `FOO` at $DIR/validate_uninhabited_zsts.rs:19:33 + | ^^^^^ error[E0080]: it is undefined behavior to use this value --> $DIR/validate_uninhabited_zsts.rs:21:1 @@ -40,6 +45,11 @@ LL | const BAR: [empty::Empty; 3] = [unsafe { std::mem::transmute(()) }; 3]; | this code causes undefined behavior when executed | help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done | +note: in this struct field + --> $DIR/validate_uninhabited_zsts.rs:16:22 + | +LL | pub struct Empty(Void); + | ^^^^ note: enums with no inhabited variants have no valid value --> $DIR/validate_uninhabited_zsts.rs:13:5 | |