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add test for ICE "raw ptr comparison should already be caught in the trait system" #105047

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Fixes #105047
This commit is contained in:
Matthias Krüger 2024-03-23 12:24:40 +01:00
parent e54bff7109
commit f1f287fadb
2 changed files with 46 additions and 0 deletions
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15
tests/ui/raw-ref-op/const-eval-compare-ice-105047.rs Normal file
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// issue: rust-lang/rust#105047
// ICE raw ptr comparison should already be caught in the trait systems
#![feature(raw_ref_op)]
const RCZ: *const i32 = &raw const *&0;
const fn f() {
if let RCZ = &raw const *&0 { }
//~^ WARN function pointers and raw pointers not derived from integers in patterns
//~^^ ERROR pointers cannot be reliably compared during const eval
//~^^^ WARN this was previously accepted by the compiler but is being phased out
}
fn main() {}

31
tests/ui/raw-ref-op/const-eval-compare-ice-105047.stderr Normal file
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warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details.
--> $DIR/const-eval-compare-ice-105047.rs:9:12
|
LL | if let RCZ = &raw const *&0 { }
| ^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #120362 <https://github.com/rust-lang/rust/issues/120362>
= note: `#[warn(pointer_structural_match)]` on by default
error: pointers cannot be reliably compared during const eval
--> $DIR/const-eval-compare-ice-105047.rs:9:12
|
LL | if let RCZ = &raw const *&0 { }
| ^^^
|
= note: see issue #53020 <https://github.com/rust-lang/rust/issues/53020> for more information
error: aborting due to 1 previous error; 1 warning emitted
Future incompatibility report: Future breakage diagnostic:
warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details.
--> $DIR/const-eval-compare-ice-105047.rs:9:12
|
LL | if let RCZ = &raw const *&0 { }
| ^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #120362 <https://github.com/rust-lang/rust/issues/120362>
= note: `#[warn(pointer_structural_match)]` on by default