From 10341d8c666fcf41f7f5336d4535e1ef3da94587 Mon Sep 17 00:00:00 2001
From: Jakub Matraszek <jakub.matraszek@gmail.com>
Date: Sun, 14 May 2017 22:47:24 +0200
Subject: [PATCH] Change inferring bin's name logic

---
 src/cargo/util/toml.rs | 18 ++++++++++--
 tests/build.rs         | 62 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 78 insertions(+), 2 deletions(-)

diff --git a/src/cargo/util/toml.rs b/src/cargo/util/toml.rs
index 084e2359b34..2bf3138f2f9 100644
--- a/src/cargo/util/toml.rs
+++ b/src/cargo/util/toml.rs
@@ -1431,11 +1431,25 @@ fn inferred_bin_path(bin: &TomlBinTarget,
         }
 
         return Path::new("src").join("bin").join(&format!("main.rs")).to_path_buf()
+    }
+
+    // bin_len > 1
+    let path = Path::new("src").join("bin").join(&format!("{}.rs", bin.name()));
+    if package_root.join(&path).exists() {
+        return path.to_path_buf()
+    }
+
+    let path = Path::new("src").join(&format!("{}.rs", bin.name()));
+    if package_root.join(&path).exists() {
+        return path.to_path_buf()
+    }
 
+    let path = Path::new("src").join("bin").join(&format!("main.rs"));
+    if package_root.join(&path).exists() {
+        return path.to_path_buf()
     }
 
-    // here we have multiple bins, so they are expected to be located inside src/bin
-    Path::new("src").join("bin").join(&format!("{}.rs", bin.name())).to_path_buf()
+    return Path::new("src").join(&format!("main.rs")).to_path_buf()
 }
 
 fn build_profiles(profiles: &Option<TomlProfiles>) -> Profiles {
diff --git a/tests/build.rs b/tests/build.rs
index 56f5c7f9fc1..85465ec25d2 100644
--- a/tests/build.rs
+++ b/tests/build.rs
@@ -2870,6 +2870,68 @@ fn run_proper_binary_main_rs() {
                 execs().with_status(0));
 }
 
+#[test]
+fn run_proper_alias_binary_from_src() {
+    let p = project("foo")
+        .file("Cargo.toml", r#"
+            [package]
+            name = "foo"
+            authors = []
+            version = "0.0.0"
+            [[bin]]
+            name = "foo"
+            [[bin]]
+            name = "bar"
+        "#)
+        .file("src/foo.rs", r#"
+            fn main() {
+              println!("foo");
+            }
+        "#).file("src/bar.rs", r#"
+            fn main() {
+              println!("bar");
+            }
+        "#);
+
+    assert_that(p.cargo_process("build")
+                 .arg("--all"),
+                execs().with_status(0)
+                );
+    assert_that(process(&p.bin("foo")),
+                execs().with_status(0).with_stdout("foo\n"));
+    assert_that(process(&p.bin("bar")),
+                execs().with_status(0).with_stdout("bar\n"));
+}
+
+#[test]
+fn run_proper_alias_binary_main_rs() {
+    let p = project("foo")
+        .file("Cargo.toml", r#"
+            [package]
+            name = "foo"
+            authors = []
+            version = "0.0.0"
+            [[bin]]
+            name = "foo"
+            [[bin]]
+            name = "bar"
+        "#)
+        .file("src/main.rs", r#"
+            fn main() {
+              println!("main");
+            }
+        "#);
+
+    assert_that(p.cargo_process("build")
+                 .arg("--all"),
+                execs().with_status(0)
+                );
+    assert_that(process(&p.bin("foo")),
+                execs().with_status(0).with_stdout("main\n"));
+    assert_that(process(&p.bin("bar")),
+                execs().with_status(0).with_stdout("main\n"));
+}
+
 #[test]
 fn run_proper_binary_main_rs_as_foo() {
     let p = project("foo")