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Check for ptr-to-int casts in const functions in THIR unsafeck
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error[E0133]: cast of pointer to int is unsafe and requires unsafe function or block | ||
--> $DIR/cast-ptr-to-int-const.rs:10:9 | ||
| | ||
LL | &Y as *const u32 as usize | ||
| ^^^^^^^^^^^^^^^^^^^^^^^^^ cast of pointer to int | ||
| | ||
= note: casting pointers to integers in constants | ||
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error[E0133]: cast of pointer to int is unsafe and requires unsafe function or block | ||
--> $DIR/cast-ptr-to-int-const.rs:17:5 | ||
| | ||
LL | &0 as *const i32 as usize | ||
| ^^^^^^^^^^^^^^^^^^^^^^^^^ cast of pointer to int | ||
| | ||
= note: casting pointers to integers in constants | ||
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error: aborting due to 2 previous errors | ||
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||
For more information about this error, try `rustc --explain E0133`. |
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@@ -1,25 +1,19 @@ | ||
// gate-test-const_raw_ptr_to_usize_cast | ||
// revisions: with_feature without_feature | ||
// revisions: mir thir | ||
// [thir]compile-flags: -Z thir-unsafeck | ||
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#![cfg_attr(with_feature, feature(const_raw_ptr_to_usize_cast))] | ||
#![feature(const_raw_ptr_to_usize_cast)] | ||
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fn main() { | ||
const X: usize = unsafe { | ||
main as usize //[without_feature]~ ERROR casting pointers to integers in constants is unstable | ||
}; | ||
const Y: u32 = 0; | ||
const Z: usize = unsafe { | ||
&Y as *const u32 as usize //[without_feature]~ ERROR is unstable | ||
}; | ||
// Cast in `const` without `unsafe` block | ||
const SAFE: usize = { | ||
&Y as *const u32 as usize //[without_feature]~ ERROR is unstable | ||
//[with_feature]~^ ERROR cast of pointer to int is unsafe and requires unsafe | ||
&Y as *const u32 as usize | ||
//~^ ERROR cast of pointer to int is unsafe and requires unsafe | ||
}; | ||
} | ||
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// Cast in `const fn` without `unsafe` block | ||
const fn test() -> usize { | ||
&0 as *const i32 as usize //[without_feature]~ ERROR is unstable | ||
//[with_feature]~^ ERROR cast of pointer to int is unsafe and requires unsafe | ||
&0 as *const i32 as usize | ||
//~^ ERROR cast of pointer to int is unsafe and requires unsafe | ||
} |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,19 @@ | ||
error[E0133]: cast of pointer to int is unsafe and requires unsafe function or block | ||
--> $DIR/cast-ptr-to-int-const.rs:10:9 | ||
| | ||
LL | &Y as *const u32 as usize | ||
| ^^^^^^^^^^^^^^^^^^^^^^^^^ cast of pointer to int | ||
| | ||
= note: casting pointers to integers in constants | ||
|
||
error[E0133]: cast of pointer to int is unsafe and requires unsafe function or block | ||
--> $DIR/cast-ptr-to-int-const.rs:17:5 | ||
| | ||
LL | &0 as *const i32 as usize | ||
| ^^^^^^^^^^^^^^^^^^^^^^^^^ cast of pointer to int | ||
| | ||
= note: casting pointers to integers in constants | ||
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error: aborting due to 2 previous errors | ||
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||
For more information about this error, try `rustc --explain E0133`. |
13 changes: 13 additions & 0 deletions
13
src/test/ui/cast/feature-gate-const_raw_ptr_to_usize_cast.rs
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fn main() { | ||
const X: usize = unsafe { | ||
main as usize //~ ERROR casting pointers to integers in constants is unstable | ||
}; | ||
const Y: u32 = 0; | ||
const Z: usize = unsafe { | ||
&Y as *const u32 as usize //~ ERROR is unstable | ||
}; | ||
} | ||
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const fn test() -> usize { | ||
&0 as *const i32 as usize //~ ERROR is unstable | ||
} |
30 changes: 30 additions & 0 deletions
30
src/test/ui/cast/feature-gate-const_raw_ptr_to_usize_cast.stderr
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error[E0658]: casting pointers to integers in constants is unstable | ||
--> $DIR/feature-gate-const_raw_ptr_to_usize_cast.rs:3:9 | ||
| | ||
LL | main as usize | ||
| ^^^^^^^^^^^^^ | ||
| | ||
= note: see issue #51910 <https://github.com/rust-lang/rust/issues/51910> for more information | ||
= help: add `#![feature(const_raw_ptr_to_usize_cast)]` to the crate attributes to enable | ||
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error[E0658]: casting pointers to integers in constants is unstable | ||
--> $DIR/feature-gate-const_raw_ptr_to_usize_cast.rs:7:9 | ||
| | ||
LL | &Y as *const u32 as usize | ||
| ^^^^^^^^^^^^^^^^^^^^^^^^^ | ||
| | ||
= note: see issue #51910 <https://github.com/rust-lang/rust/issues/51910> for more information | ||
= help: add `#![feature(const_raw_ptr_to_usize_cast)]` to the crate attributes to enable | ||
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error[E0658]: casting pointers to integers in constant functions is unstable | ||
--> $DIR/feature-gate-const_raw_ptr_to_usize_cast.rs:12:5 | ||
| | ||
LL | &0 as *const i32 as usize | ||
| ^^^^^^^^^^^^^^^^^^^^^^^^^ | ||
| | ||
= note: see issue #51910 <https://github.com/rust-lang/rust/issues/51910> for more information | ||
= 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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For more information about this error, try `rustc --explain E0658`. |