1 files changed, 36 insertions, 0 deletions
diff --git a/src/tools/rustfmt/tests/source/issue-2179/one.rs b/src/tools/rustfmt/tests/source/issue-2179/one.rs
new file mode 100644
index 000000000..d23947931
--- /dev/null
+++ b/src/tools/rustfmt/tests/source/issue-2179/one.rs
@@ -0,0 +1,36 @@
+// rustfmt-version: One
+// rustfmt-error_on_line_overflow: false
+
+fn issue_2179() {
+    let (opts, rustflags, clear_env_rust_log) =
+        {
+            // We mustn't lock configuration for the whole build process
+            let rls_config = rls_config.lock().unwrap();
+
+            let opts = CargoOptions::new(&rls_config);
+            trace!("Cargo compilation options:\n{:?}", opts);
+            let rustflags = prepare_cargo_rustflags(&rls_config);
+
+            // Warn about invalid specified bin target or package depending on current mode
+            // TODO: Return client notifications along with diagnostics to inform the user
+            if !rls_config.workspace_mode {
+                let cur_pkg_targets = ws.current().unwrap().targets();
+
+                if let &Some(ref build_bin) = rls_config.build_bin.as_ref() {
+                    let mut bins = cur_pkg_targets.iter().filter(|x| x.is_bin());
+                    if let None = bins.find(|x| x.name() == build_bin) {
+                        warn!("cargo - couldn't find binary `{}` specified in `build_bin` configuration", build_bin);
+                    }
+                }
+            } else {
+                for package in &opts.package {
+                    if let None = ws.members().find(|x| x.name() == package) {
+                        warn!("cargo - couldn't find member package `{}` specified in `analyze_package` configuration", package);
+                    }
+                }
+            }
+
+            (opts, rustflags, rls_config.clear_env_rust_log)
+        };
+
+}