Add missing extern crate rustc_driver

src/test/run-make-fulldeps/save-analysis/foo.rs

@@ -5,6 +5,11 @@
 extern crate rustc_graphviz;
 // A simple rust project
 
+// Necessary to pull in object code as the rest of the rustc crates are shipped only as rmeta
+// files.
+#[allow(unused_extern_crates)]
+extern crate rustc_driver;
+
 extern crate krate2;
 extern crate krate2 as krate3;
 

src/test/ui-fulldeps/deriving-encodable-decodable-box.rs

@@ -6,6 +6,11 @@
 extern crate rustc_macros;
 extern crate rustc_serialize;
 
+// Necessary to pull in object code as the rest of the rustc crates are shipped only as rmeta
+// files.
+#[allow(unused_extern_crates)]
+extern crate rustc_driver;
+
 use rustc_macros::{Decodable, Encodable};
 use rustc_serialize::opaque::{MemDecoder, MemEncoder};
 use rustc_serialize::{Decodable, Encodable, Encoder};

src/test/ui-fulldeps/deriving-encodable-decodable-cell-refcell.rs

@@ -8,6 +8,11 @@
 extern crate rustc_macros;
 extern crate rustc_serialize;
 
+// Necessary to pull in object code as the rest of the rustc crates are shipped only as rmeta
+// files.
+#[allow(unused_extern_crates)]
+extern crate rustc_driver;
+
 use rustc_macros::{Decodable, Encodable};
 use rustc_serialize::opaque::{MemDecoder, MemEncoder};
 use rustc_serialize::{Decodable, Encodable, Encoder};

src/test/ui-fulldeps/deriving-global.rs

@@ -5,6 +5,11 @@
 extern crate rustc_macros;
 extern crate rustc_serialize;
 
+// Necessary to pull in object code as the rest of the rustc crates are shipped only as rmeta
+// files.
+#[allow(unused_extern_crates)]
+extern crate rustc_driver;
+
 mod submod {
     use rustc_macros::{Decodable, Encodable};
 

src/test/ui-fulldeps/deriving-hygiene.rs

@@ -7,6 +7,11 @@ extern crate rustc_serialize;
 
 use rustc_macros::{Decodable, Encodable};
 
+// Necessary to pull in object code as the rest of the rustc crates are shipped only as rmeta
+// files.
+#[allow(unused_extern_crates)]
+extern crate rustc_driver;
+
 pub const other: u8 = 1;
 pub const f: u8 = 1;
 pub const d: u8 = 1;

src/test/ui-fulldeps/dropck_tarena_sound_drop.rs

@@ -14,6 +14,11 @@
 
 extern crate rustc_arena;
 
+// Necessary to pull in object code as the rest of the rustc crates are shipped only as rmeta
+// files.
+#[allow(unused_extern_crates)]
+extern crate rustc_driver;
+
 use rustc_arena::TypedArena;
 
 trait HasId { fn count(&self) -> usize; }

src/test/ui-fulldeps/empty-struct-braces-derive.rs

@@ -6,6 +6,11 @@
 extern crate rustc_macros;
 extern crate rustc_serialize;
 
+// Necessary to pull in object code as the rest of the rustc crates are shipped only as rmeta
+// files.
+#[allow(unused_extern_crates)]
+extern crate rustc_driver;
+
 use rustc_macros::{Decodable, Encodable};
 
 #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Default, Debug, Encodable, Decodable)]

src/test/ui-fulldeps/issue-14021.rs

@@ -7,6 +7,11 @@
 extern crate rustc_macros;
 extern crate rustc_serialize;
 
+// Necessary to pull in object code as the rest of the rustc crates are shipped only as rmeta
+// files.
+#[allow(unused_extern_crates)]
+extern crate rustc_driver;
+
 use rustc_macros::{Decodable, Encodable};
 use rustc_serialize::opaque::{MemDecoder, MemEncoder};
 use rustc_serialize::{Decodable, Encodable, Encoder};

src/test/ui-fulldeps/missing-rustc-driver-error.rs

@@ -1,6 +1,8 @@
 // Test that we get the following hint when trying to use a compiler crate without rustc_driver.
 // error-pattern: try adding `extern crate rustc_driver;` at the top level of this crate
 // compile-flags: --emit link
+// The exactly list of required crates depends on the target. as such only test Unix targets.
+// only-unix
 
 #![feature(rustc_private)]
 

src/test/ui-fulldeps/mod_dir_path_canonicalized.rs

@@ -10,6 +10,11 @@ extern crate rustc_parse;
 extern crate rustc_session;
 extern crate rustc_span;
 
+// Necessary to pull in object code as the rest of the rustc crates are shipped only as rmeta
+// files.
+#[allow(unused_extern_crates)]
+extern crate rustc_driver;
+
 use rustc_parse::new_parser_from_file;
 use rustc_session::parse::ParseSess;
 use rustc_span::source_map::FilePathMapping;

src/test/ui-fulldeps/pprust-expr-roundtrip.rs

@@ -27,6 +27,11 @@ extern crate rustc_session;
 extern crate rustc_span;
 extern crate thin_vec;
 
+// Necessary to pull in object code as the rest of the rustc crates are shipped only as rmeta
+// files.
+#[allow(unused_extern_crates)]
+extern crate rustc_driver;
+
 use rustc_ast::mut_visit::{self, visit_clobber, MutVisitor};
 use rustc_ast::ptr::P;
 use rustc_ast::*;

src/test/ui-fulldeps/regions-mock-tcx.rs

@@ -14,6 +14,11 @@
 extern crate rustc_arena;
 extern crate libc;
 
+// Necessary to pull in object code as the rest of the rustc crates are shipped only as rmeta
+// files.
+#[allow(unused_extern_crates)]
+extern crate rustc_driver;
+
 use TypeStructure::{TypeInt, TypeFunction};
 use AstKind::{ExprInt, ExprVar, ExprLambda};
 use rustc_arena::TypedArena;

src/test/ui-fulldeps/rustc_encodable_hygiene.rs

@@ -6,6 +6,11 @@ extern crate rustc_macros;
 #[allow(dead_code)]
 extern crate rustc_serialize;
 
+// Necessary to pull in object code as the rest of the rustc crates are shipped only as rmeta
+// files.
+#[allow(unused_extern_crates)]
+extern crate rustc_driver;
+
 use rustc_macros::{Decodable, Encodable};
 
 #[derive(Decodable, Encodable, Debug)]

src/tools/miri/src/lib.rs

@@ -54,6 +54,11 @@ extern crate rustc_session;
 extern crate rustc_span;
 extern crate rustc_target;
 
+// Necessary to pull in object code as the rest of the rustc crates are shipped only as rmeta
+// files.
+#[allow(unused_extern_crates)]
+extern crate rustc_driver;
+
 mod borrow_tracker;
 mod clock;
 mod concurrency;

src/tools/rustfmt/src/lib.rs

@@ -24,6 +24,11 @@ extern crate rustc_parse;
 extern crate rustc_session;
 extern crate rustc_span;
 
+// Necessary to pull in object code as the rest of the rustc crates are shipped only as rmeta
+// files.
+#[allow(unused_extern_crates)]
+extern crate rustc_driver;
+
 use std::cell::RefCell;
 use std::collections::HashMap;
 use std::fmt;