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58 lines
2.3 KiB
Rust
58 lines
2.3 KiB
Rust
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// Ensures that all `fn` forms can have all the function qualifiers syntactically.
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// edition:2018
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#![feature(const_extern_fn)]
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#![feature(const_fn)]
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fn main() {
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async fn ff1() {} // OK.
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unsafe fn ff2() {} // OK.
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const fn ff3() {} // OK.
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extern "C" fn ff4() {} // OK.
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const /* async */ unsafe extern "C" fn ff5() {} // OK.
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//^ FIXME(Centril): `async` should be legal syntactically, ensure it's illegal semantically.
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trait X {
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async fn ft1(); //~ ERROR trait fns cannot be declared `async`
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unsafe fn ft2(); // OK.
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const fn ft3(); //~ ERROR trait fns cannot be declared const
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extern "C" fn ft4(); // OK.
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/* const */ async unsafe extern "C" fn ft5();
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//~^ ERROR trait fns cannot be declared `async`
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//^ FIXME(Centril): `const` should be legal syntactically, ensure it's illegal semantically.
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}
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struct Y;
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impl X for Y {
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async fn ft1() {} //~ ERROR trait fns cannot be declared `async`
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//~^ ERROR method `ft1` has an incompatible type for trait
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unsafe fn ft2() {} // OK.
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const fn ft3() {} //~ ERROR trait fns cannot be declared const
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extern "C" fn ft4() {}
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/* const */ async unsafe extern "C" fn ft5() {}
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//~^ ERROR trait fns cannot be declared `async`
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//~| ERROR method `ft5` has an incompatible type for trait
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//^ FIXME(Centril): `const` should be legal syntactically, ensure it's illegal semantically.
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}
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impl Y {
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async fn fi1() {} // OK.
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unsafe fn fi2() {} // OK.
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const fn fi3() {} // OK.
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extern "C" fn fi4() {} // OK.
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/* const */ async unsafe extern "C" fn fi5() {} // OK.
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//^ FIXME(Centril): `const` should be legal syntactically, ensure it's illegal semantically.
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}
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extern {
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async fn fe1(); //~ ERROR functions in `extern` blocks cannot have qualifiers
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unsafe fn fe2(); //~ ERROR functions in `extern` blocks cannot have qualifiers
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const fn fe3(); //~ ERROR functions in `extern` blocks cannot have qualifiers
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extern "C" fn fe4(); //~ ERROR functions in `extern` blocks cannot have qualifiers
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/* const */ async unsafe extern "C" fn fe5();
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//~^ ERROR functions in `extern` blocks cannot have qualifiers
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//^ FIXME(Centril): `const` should be legal syntactically, ensure it's illegal semantically.
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}
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}
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