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981c4e3ce6
The new flag has been described in the Major Change Proposal at https://github.com/rust-lang/compiler-team/issues/656
32 lines
1.5 KiB
Rust
32 lines
1.5 KiB
Rust
// Verifies that `Session::default_hidden_visibility` is affected when using the related cmdline
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// flag. This is a regression test for https://github.com/rust-lang/compiler-team/issues/656. See
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// also https://github.com/rust-lang/rust/issues/73295 and
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// https://github.com/rust-lang/rust/issues/37530.
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// revisions:DEFAULT YES NO
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//[YES] compile-flags: -Zdefault-hidden-visibility=yes
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//[NO] compile-flags: -Zdefault-hidden-visibility=no
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// The test scenario is specifically about visibility of symbols exported out of dynamically linked
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// libraries.
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#![crate_type = "dylib"]
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// The test scenario needs to use a Rust-public, but non-explicitly-exported symbol
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// (e.g. the test doesn't use `#[no_mangle]`, because currently it implies that
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// the symbol should be exported; we don't want that - we want to test the *default*
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// export setting instead).
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#[used]
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pub static tested_symbol: [u8; 6] = *b"foobar";
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// Exact LLVM IR differs depending on the target triple (e.g. `hidden constant`
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// vs `internal constant` vs `constant`). Because of this, we only apply the
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// specific test expectations below to one specific target triple. If needed,
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// additional targets can be covered by adding copies of this test file with
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// a different `only-X` directive.
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//
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// only-x86_64-unknown-linux-gnu
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// DEFAULT: @{{.*}}default_hidden_visibility{{.*}}tested_symbol{{.*}} = constant
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// YES: @{{.*}}default_hidden_visibility{{.*}}tested_symbol{{.*}} = hidden constant
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// NO: @{{.*}}default_hidden_visibility{{.*}}tested_symbol{{.*}} = constant
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