14e72e7ffa
Previous Stacked Borrows diagnostics were missing a lot of information about the state of the interpreter, and it was difficult to add additional state because it was threaded through all the intervening function signatures. This change factors a lot of the arguments which used to be passed individually to many stacked borrows functions into a single `DiagnosticCx`, which is built in `Stacks::for_each`, and since it wraps a handle to `AllocHistory`, we can now handle more nuanced things like heterogeneous borrow of `!Freeze` types.
18 lines
641 B
Rust
18 lines
641 B
Rust
// This is a copy of illegal_read1.rs, but with #[track_caller] on the test.
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// This test only checks that our diagnostics do not display the contents of callee.
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#[rustfmt::skip] // rustfmt bug: https://github.com/rust-lang/rustfmt/issues/5391
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fn main() {
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let mut x = 15;
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let xraw = &mut x as *mut _;
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let xref = unsafe { &mut *xraw }; // derived from raw, so using raw is still ok...
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callee(xraw);
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let _val = *xref; // ...but any use of raw will invalidate our ref.
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//~^ ERROR: /read access .* tag does not exist in the borrow stack/
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}
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#[track_caller]
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fn callee(xraw: *mut i32) {
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let _val = unsafe { *xraw };
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}
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