Bless output
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@ -1,5 +1,5 @@
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error[E0658]: mutation through a reference is not allowed in statics
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--> $DIR/mod-static-with-const-fn.rs:15:5
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--> $DIR/mod-static-with-const-fn.rs:16:5
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LL | *FOO.0.get() = 5;
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| ^^^^^^^^^^^^^^^^
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@ -3,6 +3,7 @@
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const extern fn unsize(x: &[u8; 3]) -> &[u8] { x }
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const unsafe extern "C" fn closure() -> fn() { || {} }
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//~^ ERROR function pointer
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//~| ERROR function pointer cast
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const unsafe extern fn use_float() { 1.0 + 1.0; }
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//~^ ERROR floating point arithmetic
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const extern "C" fn ptr_cast(val: *const u8) { val as usize; }
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@ -1,4 +1,13 @@
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error[E0658]: function pointers cannot appear in constant functions
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--> $DIR/const-extern-fn-min-const-fn.rs:4:41
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LL | const unsafe extern "C" fn closure() -> fn() { || {} }
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| ^^^^
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= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
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= help: add `#![feature(const_fn_fn_ptr_basics)]` to the crate attributes to enable
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error[E0658]: function pointer casts are not allowed in constant functions
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--> $DIR/const-extern-fn-min-const-fn.rs:4:48
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LL | const unsafe extern "C" fn closure() -> fn() { || {} }
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@ -8,7 +17,7 @@ LL | const unsafe extern "C" fn closure() -> fn() { || {} }
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= help: add `#![feature(const_fn_fn_ptr_basics)]` to the crate attributes to enable
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error[E0658]: floating point arithmetic is not allowed in constant functions
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--> $DIR/const-extern-fn-min-const-fn.rs:6:38
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--> $DIR/const-extern-fn-min-const-fn.rs:7:38
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LL | const unsafe extern fn use_float() { 1.0 + 1.0; }
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| ^^^^^^^^^
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@ -17,7 +26,7 @@ LL | const unsafe extern fn use_float() { 1.0 + 1.0; }
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= help: add `#![feature(const_fn_floating_point_arithmetic)]` to the crate attributes to enable
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error[E0658]: casting pointers to integers in constant functions is unstable
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--> $DIR/const-extern-fn-min-const-fn.rs:8:48
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--> $DIR/const-extern-fn-min-const-fn.rs:9:48
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LL | const extern "C" fn ptr_cast(val: *const u8) { val as usize; }
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| ^^^^^^^^^^^^
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@ -25,6 +34,6 @@ LL | const extern "C" fn ptr_cast(val: *const u8) { val as usize; }
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= note: see issue #51910 <https://github.com/rust-lang/rust/issues/51910> for more information
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= help: add `#![feature(const_raw_ptr_to_usize_cast)]` to the crate attributes to enable
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error: aborting due to 3 previous errors
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error: aborting due to 4 previous errors
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For more information about this error, try `rustc --explain E0658`.
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@ -3,11 +3,15 @@ fn main() {}
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const fn unsize(x: &[u8; 3]) -> &[u8] { x }
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const fn closure() -> fn() { || {} }
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//~^ ERROR function pointer
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//~| ERROR function pointer cast
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const fn closure2() {
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(|| {}) as fn();
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//~^ ERROR function pointer
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}
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const fn reify(f: fn()) -> unsafe fn() { f }
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//~^ ERROR function pointer
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//~| ERROR function pointer
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//~| ERROR function pointer cast
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const fn reify2() { main as unsafe fn(); }
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//~^ ERROR function pointer
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//~| ERROR function pointer cast
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@ -1,4 +1,13 @@
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error[E0658]: function pointers cannot appear in constant functions
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--> $DIR/cast_errors.rs:4:23
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LL | const fn closure() -> fn() { || {} }
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| ^^^^
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= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
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= help: add `#![feature(const_fn_fn_ptr_basics)]` to the crate attributes to enable
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error[E0658]: function pointer casts are not allowed in constant functions
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--> $DIR/cast_errors.rs:4:30
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LL | const fn closure() -> fn() { || {} }
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@ -7,17 +16,17 @@ LL | const fn closure() -> fn() { || {} }
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= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
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= help: add `#![feature(const_fn_fn_ptr_basics)]` to the crate attributes to enable
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error[E0658]: function pointers cannot appear in constant functions
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--> $DIR/cast_errors.rs:7:5
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error[E0658]: function pointer casts are not allowed in constant functions
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--> $DIR/cast_errors.rs:8:5
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LL | (|| {}) as fn();
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| ^^^^^^^^^^^^^^^
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| ^^^^^^^
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= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
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= help: add `#![feature(const_fn_fn_ptr_basics)]` to the crate attributes to enable
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error[E0658]: function pointers cannot appear in constant functions
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--> $DIR/cast_errors.rs:10:16
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--> $DIR/cast_errors.rs:11:16
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LL | const fn reify(f: fn()) -> unsafe fn() { f }
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| ^
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@ -26,14 +35,41 @@ LL | const fn reify(f: fn()) -> unsafe fn() { f }
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= help: add `#![feature(const_fn_fn_ptr_basics)]` to the crate attributes to enable
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error[E0658]: function pointers cannot appear in constant functions
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--> $DIR/cast_errors.rs:12:21
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--> $DIR/cast_errors.rs:11:28
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LL | const fn reify2() { main as unsafe fn(); }
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| ^^^^^^^^^^^^^^^^^^^
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LL | const fn reify(f: fn()) -> unsafe fn() { f }
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| ^^^^^^^^^^^
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= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
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= help: add `#![feature(const_fn_fn_ptr_basics)]` to the crate attributes to enable
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error: aborting due to 4 previous errors
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error[E0658]: function pointer casts are not allowed in constant functions
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--> $DIR/cast_errors.rs:11:42
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LL | const fn reify(f: fn()) -> unsafe fn() { f }
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| ^
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= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
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= help: add `#![feature(const_fn_fn_ptr_basics)]` to the crate attributes to enable
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error[E0658]: function pointer casts are not allowed in constant functions
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--> $DIR/cast_errors.rs:15:21
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LL | const fn reify2() { main as unsafe fn(); }
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| ^^^^
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= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
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= help: add `#![feature(const_fn_fn_ptr_basics)]` to the crate attributes to enable
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error[E0658]: function pointer casts are not allowed in constant functions
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--> $DIR/cast_errors.rs:15:21
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LL | const fn reify2() { main as unsafe fn(); }
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| ^^^^
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= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
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= help: add `#![feature(const_fn_fn_ptr_basics)]` to the crate attributes to enable
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error: aborting due to 8 previous errors
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For more information about this error, try `rustc --explain E0658`.
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const fn cmp(x: fn(), y: fn()) -> bool { //~ ERROR function pointer
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const fn cmp(x: fn(), y: fn()) -> bool {
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//~^ ERROR function pointer
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//~| ERROR function pointer
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unsafe { x == y }
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//~^ ERROR pointers cannot be reliably compared
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}
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fn main() {}
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= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
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= help: add `#![feature(const_fn_fn_ptr_basics)]` to the crate attributes to enable
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error: aborting due to previous error
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error[E0658]: function pointers cannot appear in constant functions
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--> $DIR/cmp_fn_pointers.rs:1:23
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LL | const fn cmp(x: fn(), y: fn()) -> bool {
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| ^
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= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
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= help: add `#![feature(const_fn_fn_ptr_basics)]` to the crate attributes to enable
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error: pointers cannot be reliably compared during const eval.
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--> $DIR/cmp_fn_pointers.rs:4:14
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LL | unsafe { x == y }
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| ^^^^^^
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= note: see issue #53020 <https://github.com/rust-lang/rust/issues/53020> for more information
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error: aborting due to 3 previous errors
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For more information about this error, try `rustc --explain E0658`.
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@ -139,3 +139,4 @@ const fn no_fn_ptrs(_x: fn()) {}
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//~^ ERROR function pointer
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const fn no_fn_ptrs2() -> fn() { fn foo() {} foo }
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//~^ ERROR function pointer
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//~| ERROR function pointer cast
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= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
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= help: add `#![feature(const_fn_fn_ptr_basics)]` to the crate attributes to enable
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error: aborting due to 34 previous errors
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error[E0658]: function pointer casts are not allowed in constant functions
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--> $DIR/min_const_fn.rs:140:46
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LL | const fn no_fn_ptrs2() -> fn() { fn foo() {} foo }
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| ^^^
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= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
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= help: add `#![feature(const_fn_fn_ptr_basics)]` to the crate attributes to enable
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error: aborting due to 35 previous errors
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Some errors have detailed explanations: E0013, E0493, E0658, E0723.
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For more information about an error, try `rustc --explain E0013`.
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@ -7,7 +7,7 @@ LL | x.0.field;
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= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
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= help: add `#![feature(const_fn_fn_ptr_basics)]` to the crate attributes to enable
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error[E0658]: function pointers cannot appear in constant functions
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error[E0658]: function pointer casts are not allowed in constant functions
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--> $DIR/min_const_fn_fn_ptr.rs:16:59
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LL | const fn no_inner_dyn_trait_ret() -> Hide { Hide(HasPtr { field }) }
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