Rollup merge of rust-lang#52302 - ljedrz:dyn_futureproofing, r=cramertj

Deny bare trait objects in the rest of rust

Add `#![deny(bare_trait_objects)]` to all the modules not covered before (those did not require code changes) that I consider applicable (I left out shims) in order to futureproof them.

Author: kennytm

src/build_helper/lib.rs

@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![deny(bare_trait_objects)]
+
 use std::fs::File;
 use std::path::{Path, PathBuf};
 use std::process::{Command, Stdio};

src/liballoc_jemalloc/lib.rs

@@ -10,6 +10,7 @@
 
 #![no_std]
 #![allow(unused_attributes)]
+#![deny(bare_trait_objects)]
 #![unstable(feature = "alloc_jemalloc",
             reason = "implementation detail of std, does not provide any public API",
             issue = "0")]

src/liballoc_system/lib.rs

@@ -10,6 +10,7 @@
 
 #![no_std]
 #![allow(unused_attributes)]
+#![deny(bare_trait_objects)]
 #![unstable(feature = "alloc_system",
             reason = "this library is unlikely to be stabilized in its current \
                       form or name",

src/libarena/lib.rs

@@ -30,6 +30,7 @@
 #![cfg_attr(test, feature(test))]
 
 #![allow(deprecated)]
+#![deny(bare_trait_objects)]
 
 extern crate alloc;
 extern crate rustc_data_structures;

src/libfmt_macros/lib.rs

@@ -14,6 +14,8 @@
 //! Parsing does not happen at runtime: structures of `std::fmt::rt` are
 //! generated instead.
 
+#![deny(bare_trait_objects)]
+
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
        html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
        html_root_url = "https://doc.rust-lang.org/nightly/",

src/libgraphviz/lib.rs

@@ -283,6 +283,8 @@
 //!
 //! * [DOT language](http://www.graphviz.org/doc/info/lang.html)
 
+#![deny(bare_trait_objects)]
+
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
        html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
        html_root_url = "https://doc.rust-lang.org/nightly/",

src/libpanic_abort/lib.rs

@@ -21,6 +21,7 @@
        issue_tracker_base_url = "https://github.com/rust-lang/rust/issues/")]
 #![panic_runtime]
 #![allow(unused_features)]
+#![deny(bare_trait_objects)]
 
 #![feature(core_intrinsics)]
 #![feature(libc)]

src/libproc_macro/lib.rs

@@ -22,6 +22,7 @@
 //! See [the book](../book/first-edition/procedural-macros.html) for more.
 
 #![stable(feature = "proc_macro_lib", since = "1.15.0")]
+#![deny(bare_trait_objects)]
 #![deny(missing_docs)]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
        html_favicon_url = "https://doc.rust-lang.org/favicon.ico",

src/libprofiler_builtins/lib.rs

@@ -15,4 +15,5 @@
             reason = "internal implementation detail of rustc right now",
             issue = "0")]
 #![allow(unused_features)]
+#![deny(bare_trait_objects)]
 #![feature(staged_api)]

src/librustc_apfloat/lib.rs

@@ -40,6 +40,8 @@
 //!
 //! This API is completely unstable and subject to change.
 
+#![deny(bare_trait_objects)]
+
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
       html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
       html_root_url = "https://doc.rust-lang.org/nightly/")]