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add test for ICE "raw ptr comparison should already be caught in the trait system" #105047
Fixes #105047
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tests/ui/raw-ref-op/const-eval-compare-ice-105047.rs
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tests/ui/raw-ref-op/const-eval-compare-ice-105047.rs
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// issue: rust-lang/rust#105047
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// ICE raw ptr comparison should already be caught in the trait systems
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#![feature(raw_ref_op)]
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const RCZ: *const i32 = &raw const *&0;
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const fn f() {
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if let RCZ = &raw const *&0 { }
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//~^ WARN function pointers and raw pointers not derived from integers in patterns
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//~^^ ERROR pointers cannot be reliably compared during const eval
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//~^^^ WARN this was previously accepted by the compiler but is being phased out
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}
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fn main() {}
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tests/ui/raw-ref-op/const-eval-compare-ice-105047.stderr
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tests/ui/raw-ref-op/const-eval-compare-ice-105047.stderr
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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.
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--> $DIR/const-eval-compare-ice-105047.rs:9:12
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LL | if let RCZ = &raw const *&0 { }
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| ^^^
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= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
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= note: for more information, see issue #120362 <https://github.com/rust-lang/rust/issues/120362>
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= note: `#[warn(pointer_structural_match)]` on by default
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error: pointers cannot be reliably compared during const eval
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--> $DIR/const-eval-compare-ice-105047.rs:9:12
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LL | if let RCZ = &raw const *&0 { }
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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 1 previous error; 1 warning emitted
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Future incompatibility report: Future breakage diagnostic:
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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.
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--> $DIR/const-eval-compare-ice-105047.rs:9:12
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LL | if let RCZ = &raw const *&0 { }
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| ^^^
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= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
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= note: for more information, see issue #120362 <https://github.com/rust-lang/rust/issues/120362>
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= note: `#[warn(pointer_structural_match)]` on by default
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