65 lines
2.3 KiB
Rust
65 lines
2.3 KiB
Rust
#![crate_type = "lib"]
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#![feature(staged_api, rustc_attrs)]
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#![stable(feature = "foo", since = "1.0.0")]
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#[stable(feature = "foo", since = "1.0.0")]
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#[rustc_const_unstable(feature = "const_foo", issue = "none")]
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pub fn foo() {}
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//~^ ERROR require the function or method to be `const`
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#[stable(feature = "bar", since = "1.0.0")]
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#[rustc_const_stable(feature = "const_bar", since = "1.0.0")]
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pub fn bar() {}
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//~^ ERROR require the function or method to be `const`
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#[stable(feature = "potato", since = "1.0.0")]
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pub struct Potato;
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impl Potato {
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#[stable(feature = "salad", since = "1.0.0")]
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#[rustc_const_unstable(feature = "const_salad", issue = "none")]
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pub fn salad(&self) -> &'static str { "mmmmmm" }
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//~^ ERROR require the function or method to be `const`
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#[stable(feature = "roasted", since = "1.0.0")]
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#[rustc_const_unstable(feature = "const_roasted", issue = "none")]
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pub fn roasted(&self) -> &'static str { "mmmmmmmmmm" }
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//~^ ERROR require the function or method to be `const`
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}
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#[stable(feature = "bar", since = "1.0.0")]
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#[rustc_const_stable(feature = "const_bar", since = "1.0.0")]
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pub extern "C" fn bar_c() {}
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//~^ ERROR require the function or method to be `const`
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#[stable(feature = "foo", since = "1.0.0")]
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#[rustc_const_unstable(feature = "const_foo", issue = "none")]
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pub extern "C" fn foo_c() {}
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//~^ ERROR require the function or method to be `const`
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#[stable(feature = "foobar", since = "1.0.0")]
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#[rustc_const_unstable(feature = "foobar_const", issue = "none")]
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pub const fn foobar() {}
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#[stable(feature = "barfoo", since = "1.0.0")]
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#[rustc_const_stable(feature = "barfoo_const", since = "1.0.0")]
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pub const fn barfoo() {}
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// `rustc_const_stable` also requires the function to be stable.
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#[rustc_const_stable(feature = "barfoo_const", since = "1.0.0")]
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const fn barfoo_unmarked() {}
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//~^ ERROR can only be applied to functions that are declared `#[stable]`
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#[unstable(feature = "unstable", issue = "none")]
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#[rustc_const_stable(feature = "barfoo_const", since = "1.0.0")]
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pub const fn barfoo_unstable() {}
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//~^ ERROR can only be applied to functions that are declared `#[stable]`
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// `#[rustc_const_stable_indirect]` also requires a const fn
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#[rustc_const_stable_indirect]
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#[unstable(feature = "unstable", issue = "none")]
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pub fn not_a_const_fn() {}
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//~^ ERROR require the function or method to be `const`
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