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#![unstable(feature = "humans",
reason = "who ever let humans program computers,
we're apparently really bad at it",
issue = "none")]
#![feature(const_fn_floating_point_arithmetic, foo, foo2)]
#![feature(staged_api)]
#[stable(feature = "rust1", since = "1.0.0")]
#[rustc_const_unstable(feature="foo", issue = "none")]
const fn foo() -> u32 { 42 }
#[stable(feature = "rust1", since = "1.0.0")]
#[rustc_const_stable(feature = "rust1", since = "1.0.0")]
// can't call non-min_const_fn
const fn bar() -> u32 { foo() } //~ ERROR not yet stable as a const fn
#[unstable(feature = "foo2", issue = "none")]
const fn foo2() -> u32 { 42 }
#[stable(feature = "rust1", since = "1.0.0")]
#[rustc_const_stable(feature = "rust1", since = "1.0.0")]
// can't call non-min_const_fn
const fn bar2() -> u32 { foo2() } //~ ERROR not yet stable as a const fn
#[stable(feature = "rust1", since = "1.0.0")]
#[rustc_const_stable(feature = "rust1", since = "1.0.0")]
// Const-stable functions cannot rely on unstable const-eval features.
const fn bar3() -> u32 { (5f32 + 6f32) as u32 }
//~^ ERROR const-stable function cannot use `#[feature(const_fn_floating_point_arithmetic)]`
// check whether this function cannot be called even with the feature gate active
#[unstable(feature = "foo2", issue = "none")]
const fn foo2_gated() -> u32 { 42 }
#[stable(feature = "rust1", since = "1.0.0")]
#[rustc_const_stable(feature = "rust1", since = "1.0.0")]
// can't call non-min_const_fn
const fn bar2_gated() -> u32 { foo2_gated() } //~ ERROR not yet stable as a const fn
fn main() {}
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