Add a feature gate for basic function pointer use in const fn

2020-09-24 16:17:03 -07:00
parent 1d216fef3e
commit 1ff143191c
7 changed files with 29 additions and 7 deletions
--- a/library/core/src/task/wake.rs
+++ b/library/core/src/task/wake.rs
@@ -136,6 +136,7 @@ impl RawWakerVTable {
    // (see https://github.com/rust-rfcs/const-eval/issues/19#issuecomment-472799062)
    #[rustc_allow_const_fn_ptr]
    #[rustc_const_stable(feature = "futures_api", since = "1.36.0")]
+    #[cfg_attr(not(bootstrap), allow_internal_unstable(const_fn_fn_ptr_basics))]
    pub const fn new(
        clone: unsafe fn(*const ()) -> RawWaker,
        wake: unsafe fn(*const ()),