Remove unneeded `fn main` blocks from docs

1 files changed, 23 insertions, 25 deletions

diff --git a/src/libcore/ptr/mod.rs b/src/libcore/ptr/mod.rs
index 13ccc9b252a..93391918595 100644
--- a/src/libcore/ptr/mod.rs
+++ b/src/libcore/ptr/mod.rs
@@ -2732,31 +2732,29 @@ impl<T: ?Sized> Eq for *mut T {}
 /// impl Trait for Wrapper {}
 /// impl Trait for i32 {}
 ///
-/// fn main() {
-///     let wrapper = Wrapper { member: 10 };
-///
-///     // Pointers have equal addresses.
-///     assert!(std::ptr::eq(
-///         &wrapper as *const Wrapper as *const u8,
-///         &wrapper.member as *const i32 as *const u8
-///     ));
-///
-///     // Objects have equal addresses, but `Trait` has different implementations.
-///     assert!(!std::ptr::eq(
-///         &wrapper as &dyn Trait,
-///         &wrapper.member as &dyn Trait,
-///     ));
-///     assert!(!std::ptr::eq(
-///         &wrapper as &dyn Trait as *const dyn Trait,
-///         &wrapper.member as &dyn Trait as *const dyn Trait,
-///     ));
-///
-///     // Converting the reference to a `*const u8` compares by address.
-///     assert!(std::ptr::eq(
-///         &wrapper as &dyn Trait as *const dyn Trait as *const u8,
-///         &wrapper.member as &dyn Trait as *const dyn Trait as *const u8,
-///     ));
-/// }
+/// let wrapper = Wrapper { member: 10 };
+///
+/// // Pointers have equal addresses.
+/// assert!(std::ptr::eq(
+///     &wrapper as *const Wrapper as *const u8,
+///     &wrapper.member as *const i32 as *const u8
+/// ));
+///
+/// // Objects have equal addresses, but `Trait` has different implementations.
+/// assert!(!std::ptr::eq(
+///     &wrapper as &dyn Trait,
+///     &wrapper.member as &dyn Trait,
+/// ));
+/// assert!(!std::ptr::eq(
+///     &wrapper as &dyn Trait as *const dyn Trait,
+///     &wrapper.member as &dyn Trait as *const dyn Trait,
+/// ));
+///
+/// // Converting the reference to a `*const u8` compares by address.
+/// assert!(std::ptr::eq(
+///     &wrapper as &dyn Trait as *const dyn Trait as *const u8,
+///     &wrapper.member as &dyn Trait as *const dyn Trait as *const u8,
+/// ));
 /// ```
 #[stable(feature = "ptr_eq", since = "1.17.0")]
 #[inline]