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New tests for cross-crate usages of const fn and so forth
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16
src/test/auxiliary/const_fn_lib.rs
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16
src/test/auxiliary/const_fn_lib.rs
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// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// Crate that exports a const fn. Used for testing cross-crate.
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#![crate_type="rlib"]
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#![feature(const_fn)]
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pub const fn foo() -> usize { 22 } //~ ERROR const fn is unstable
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src/test/compile-fail/const-fn-stability-calls-2.rs
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src/test/compile-fail/const-fn-stability-calls-2.rs
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// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// Test use of const fn from another crate without a feature gate.
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// aux-build:const_fn_lib.rs
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extern crate const_fn_lib;
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use const_fn_lib::foo;
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fn main() {
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let x: [usize; foo()] = []; //~ ERROR unsupported constant expr
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}
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25
src/test/compile-fail/const-fn-stability-calls-3.rs
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src/test/compile-fail/const-fn-stability-calls-3.rs
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// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// Test use of const fn from another crate without a feature gate.
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#![feature(rustc_attrs)]
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#![allow(unused_variables)]
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// aux-build:const_fn_lib.rs
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extern crate const_fn_lib;
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use const_fn_lib::foo;
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#[rustc_error]
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fn main() { //~ ERROR compilation successful
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let x = foo(); // use outside a constant is ok
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}
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34
src/test/compile-fail/const-fn-stability-calls.rs
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src/test/compile-fail/const-fn-stability-calls.rs
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// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// Test use of const fn from another crate without a feature gate.
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// aux-build:const_fn_lib.rs
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extern crate const_fn_lib;
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use const_fn_lib::foo;
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static FOO: usize = foo(); //~ ERROR const fns are an unstable feature
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const BAR: usize = foo(); //~ ERROR const fns are an unstable feature
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macro_rules! constant {
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($n:ident: $t:ty = $v:expr) => {
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const $n: $t = $v;
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}
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}
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constant! {
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BAZ: usize = foo() //~ ERROR const fns are an unstable feature
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}
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fn main() {
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// let x: [usize; foo()] = [];
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}
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@ -28,6 +28,16 @@ const fn foo() -> u32 { 0 } //~ ERROR const fn is unstable
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static FOO: usize = foo();
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const BAR: usize = foo();
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macro_rules! constant {
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($n:ident: $t:ty = $v:expr) => {
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const $n: $t = $v;
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}
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}
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constant! {
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BAZ: usize = foo()
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}
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fn main() {
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let x: [usize; foo()] = [];
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}
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25
src/test/run-pass/const-fn-cross-crate.rs
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src/test/run-pass/const-fn-cross-crate.rs
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// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// aux-build:const_fn_lib.rs
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// A very basic test of const fn functionality.
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#![feature(const_fn)]
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extern crate const_fn_lib;
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use const_fn_lib::foo;
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const FOO: usize = foo();
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fn main() {
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assert_eq!(FOO, 22);
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}
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