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https://github.com/rust-lang/rust
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ea4518522f
In user-facing Rust, `dyn` always has at least one predicate following it. Unfortunately, because we filter out marker traits from receivers at callsites and `dyn Sync` is, for example, legal, this results in us having `dyn` types with no predicates on occasion in our alias set encoding. This patch handles cases where there are no predicates in a `dyn` type which are relevant to its alias set. Fixes #122998
21 lines
748 B
Rust
21 lines
748 B
Rust
// Check that dropping a trait object without a principal trait succeeds
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//@ needs-sanitizer-cfi
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// FIXME(#122848) Remove only-linux once OSX CFI binaries works
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//@ only-linux
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//@ compile-flags: --crate-type=bin -Cprefer-dynamic=off -Clto -Zsanitizer=cfi
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//@ compile-flags: -C target-feature=-crt-static -C codegen-units=1 -C opt-level=0
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// FIXME(#118761) Should be run-pass once the labels on drop are compatible.
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// This test is being landed ahead of that to test that the compiler doesn't ICE while labeling the
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// callsite for a drop, but the vtable doesn't have the correct label yet.
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//@ build-pass
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struct CustomDrop;
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impl Drop for CustomDrop {
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fn drop(&mut self) {}
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}
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fn main() {
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let _ = Box::new(CustomDrop) as Box<dyn Send>;
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}
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