From e50dc1a42f949c59889f478188f44f3da6eb980d Mon Sep 17 00:00:00 2001
From: Nick Cameron <ncameron@mozilla.com>
Date: Thu, 5 Jan 2017 15:21:12 +1300
Subject: [PATCH] Add `--profile check` to `cargo rustc`

---
 src/bin/rustc.rs                         |  1 +
 src/cargo/ops/cargo_rustc/fingerprint.rs |  4 --
 src/cargo/util/config.rs                 |  2 +-
 tests/check.rs                           | 83 ++++++++++++++++++++++++
 4 files changed, 85 insertions(+), 5 deletions(-)

diff --git a/src/bin/rustc.rs b/src/bin/rustc.rs
index 98dd2e894..d812e5eb5 100644
--- a/src/bin/rustc.rs
+++ b/src/bin/rustc.rs
@@ -88,6 +88,7 @@ pub fn execute(options: Options, config: &Config) -> CliResult<Option<()>> {
         Some("dev") | None => CompileMode::Build,
         Some("test") => CompileMode::Test,
         Some("bench") => CompileMode::Bench,
+        Some("check") => CompileMode::Check,
         Some(mode) => {
             let err = human(format!("unknown profile: `{}`, use dev,
                                      test, or bench", mode));
diff --git a/src/cargo/ops/cargo_rustc/fingerprint.rs b/src/cargo/ops/cargo_rustc/fingerprint.rs
index 812240908..3d1f27449 100644
--- a/src/cargo/ops/cargo_rustc/fingerprint.rs
+++ b/src/cargo/ops/cargo_rustc/fingerprint.rs
@@ -153,10 +153,6 @@ impl Fingerprint {
                 })?;
                 let mtime = FileTime::from_last_modification_time(&meta);
                 *slot.0.lock().unwrap() = Some(mtime);
-                // if let Ok(meta) = fs::metadata(path) {
-                //     let mtime = FileTime::from_last_modification_time(&meta);
-                //     *slot.0.lock().unwrap() = Some(mtime);
-                // }
             }
             LocalFingerprint::Precalculated(..) => return Ok(())
         }
diff --git a/src/cargo/util/config.rs b/src/cargo/util/config.rs
index 63382c10c..501480e24 100644
--- a/src/cargo/util/config.rs
+++ b/src/cargo/util/config.rs
@@ -47,7 +47,7 @@ impl Config {
             rustdoc: LazyCell::new(),
             extra_verbose: Cell::new(false),
             frozen: Cell::new(false),
-            locked: Cell::new(false),   
+            locked: Cell::new(false),
         }
     }
 
diff --git a/tests/check.rs b/tests/check.rs
index cf039898d..b01d88e95 100644
--- a/tests/check.rs
+++ b/tests/check.rs
@@ -300,3 +300,86 @@ fn issue_3419() {
     assert_that(foo.cargo_process("check"),
                 execs().with_status(0));
 }
+
+// test `cargo rustc --profile check`
+#[test]
+fn rustc_check() {
+    if !is_nightly() {
+        return
+    }
+    let foo = project("foo")
+        .file("Cargo.toml", r#"
+            [package]
+            name = "foo"
+            version = "0.0.1"
+            authors = []
+
+            [dependencies.bar]
+            path = "../bar"
+        "#)
+        .file("src/main.rs", r#"
+            extern crate bar;
+            fn main() {
+                ::bar::baz();
+            }
+        "#);
+    let bar = project("bar")
+        .file("Cargo.toml", r#"
+            [package]
+            name = "bar"
+            version = "0.1.0"
+            authors = []
+        "#)
+        .file("src/lib.rs", r#"
+            pub fn baz() {}
+        "#);
+    bar.build();
+
+    assert_that(foo.cargo_process("rustc")
+                   .arg("--profile")
+                   .arg("check")
+                   .arg("--")
+                   .arg("--emit=metadata"),
+                execs().with_status(0));
+}
+
+#[test]
+fn rustc_check_err() {
+    if !is_nightly() {
+        return
+    }
+    let foo = project("foo")
+        .file("Cargo.toml", r#"
+            [package]
+            name = "foo"
+            version = "0.0.1"
+            authors = []
+
+            [dependencies.bar]
+            path = "../bar"
+        "#)
+        .file("src/main.rs", r#"
+            extern crate bar;
+            fn main() {
+                ::bar::qux();
+            }
+        "#);
+    let bar = project("bar")
+        .file("Cargo.toml", r#"
+            [package]
+            name = "bar"
+            version = "0.1.0"
+            authors = []
+        "#)
+        .file("src/lib.rs", r#"
+            pub fn baz() {}
+        "#);
+    bar.build();
+
+    assert_that(foo.cargo_process("rustc")
+                   .arg("--profile")
+                   .arg("check")
+                   .arg("--")
+                   .arg("--emit=metadata"),
+                execs().with_status(101));
+}
-- 
2.30.2