Add 'src/tools/rustfmt/' from commit '7872306edf2e11a69aaffb9434088fd66b46a863'

git-subtree-dir: src/tools/rustfmt
git-subtree-mainline: e659b6de9170c055b6f2d16e2679b22d67297b13
git-subtree-split: 7872306edf2e11a69aaffb9434088fd66b46a863

1 files changed, 84 insertions, 0 deletions

diff --git a/src/tools/rustfmt/tests/target/extern.rs b/src/tools/rustfmt/tests/target/extern.rs
new file mode 100644
index 00000000000..44ed6d4b475
--- /dev/null
+++ b/src/tools/rustfmt/tests/target/extern.rs
@@ -0,0 +1,84 @@
+// rustfmt-normalize_comments: true
+
+extern crate foo;
+extern crate foo as bar;
+
+extern crate chrono;
+extern crate dotenv;
+extern crate futures;
+
+extern crate bar;
+extern crate foo;
+
+// #2315
+extern crate proc_macro;
+extern crate proc_macro2;
+
+// #3128
+extern crate serde; // 1.0.78
+extern crate serde_derive; // 1.0.78
+extern crate serde_json; // 1.0.27
+
+extern "C" {
+    fn c_func(x: *mut *mut libc::c_void);
+
+    fn c_func(
+        x: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX,
+        y: YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY,
+    );
+
+    #[test123]
+    fn foo() -> uint64_t;
+
+    pub fn bar();
+}
+
+extern "C" {
+    fn DMR_GetDevice(
+        pHDev: *mut HDEV,
+        searchMode: DeviceSearchMode,
+        pSearchString: *const c_char,
+        devNr: c_uint,
+        wildcard: c_char,
+    ) -> TDMR_ERROR;
+
+    fn quux() -> (); // Post comment
+
+    pub type Foo;
+
+    type Bar;
+}
+
+extern "Rust" {
+    static ext: u32;
+    // Some comment.
+    pub static mut var: SomeType;
+}
+
+extern "C" {
+    fn syscall(
+        number: libc::c_long, // comment 1
+        // comm 2
+        ... // sup?
+    ) -> libc::c_long;
+
+    fn foo(x: *const c_char, ...) -> libc::c_long;
+}
+
+extern "C" {
+    pub fn freopen(
+        filename: *const c_char,
+        mode: *const c_char,
+        mode2: *const c_char,
+        mode3: *const c_char,
+        file: *mut FILE,
+    ) -> *mut FILE;
+
+    const fn foo() -> *mut Bar;
+    unsafe fn foo() -> *mut Bar;
+
+    pub(super) const fn foo() -> *mut Bar;
+    pub(crate) unsafe fn foo() -> *mut Bar;
+}
+
+extern "C" {}