diff options
Diffstat (limited to 'library/std/src/primitive_docs.rs')
| -rw-r--r-- | library/std/src/primitive_docs.rs | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/library/std/src/primitive_docs.rs b/library/std/src/primitive_docs.rs index 331714a99..d6e9da187 100644 --- a/library/std/src/primitive_docs.rs +++ b/library/std/src/primitive_docs.rs @@ -1493,11 +1493,13 @@ mod prim_ref {} /// However, a direct cast back is not possible. You need to use `transmute`: /// /// ```rust +/// # #[cfg(not(miri))] { // FIXME: use strict provenance APIs once they are stable, then remove this `cfg` /// # let fnptr: fn(i32) -> i32 = |x| x+2; /// # let fnptr_addr = fnptr as usize; /// let fnptr = fnptr_addr as *const (); /// let fnptr: fn(i32) -> i32 = unsafe { std::mem::transmute(fnptr) }; /// assert_eq!(fnptr(40), 42); +/// # } /// ``` /// /// Crucially, we `as`-cast to a raw pointer before `transmute`ing to a function pointer. |