mirror of
https://github.com/rust-lang/rust
synced 2024-07-20 18:05:58 +00:00
72800d3b89
Except for `simd-intrinsic/`, which has a lot of files containing multiple types like `u8x64` which really are better when hand-formatted. There is a surprising amount of two-space indenting in this directory. Non-trivial changes: - `rustfmt::skip` needed in `debug-column.rs` to preserve meaning of the test. - `rustfmt::skip` used in a few places where hand-formatting read more nicely: `enum/enum-match.rs` - Line number adjustments needed for the expected output of `debug-column.rs` and `coroutine-debug.rs`.
37 lines
1.3 KiB
Rust
37 lines
1.3 KiB
Rust
//@ needs-unwind - this test verifies the amount of drop calls when unwinding is used
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//@ compile-flags: -C no-prepopulate-passes
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#![crate_type = "lib"]
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struct SomeUniqueName;
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impl Drop for SomeUniqueName {
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#[inline(never)]
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fn drop(&mut self) {}
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}
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#[inline(never)]
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pub fn possibly_unwinding() {}
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// CHECK-LABEL: @droppy
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#[no_mangle]
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pub fn droppy() {
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// Check that there are exactly 6 drop calls. The cleanups for the unwinding should be reused,
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// so that's one new drop call per call to possibly_unwinding(), and finally 3 drop calls for
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// the regular function exit. We used to have problems with quadratic growths of drop calls in
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// such functions.
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// FIXME(eddyb) the `void @` forces a match on the instruction, instead of the
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// comment, that's `; call core::ptr::drop_in_place::<drop::SomeUniqueName>`
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// for the `v0` mangling, should switch to matching on that once `legacy` is gone.
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// CHECK-COUNT-6: {{(call|invoke) void @.*}}drop_in_place{{.*}}SomeUniqueName
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// CHECK-NOT: {{(call|invoke) void @.*}}drop_in_place{{.*}}SomeUniqueName
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// The next line checks for the } that ends the function definition
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// CHECK-LABEL: {{^[}]}}
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let _s = SomeUniqueName;
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possibly_unwinding();
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let _s = SomeUniqueName;
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possibly_unwinding();
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let _s = SomeUniqueName;
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possibly_unwinding();
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}
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