1 files changed, 33 insertions, 0 deletions
diff --git a/src/test/ui/typeck/typeck_type_placeholder_item_help.rs b/src/test/ui/typeck/typeck_type_placeholder_item_help.rs
new file mode 100644
index 000000000..c459d8c3c
--- /dev/null
+++ b/src/test/ui/typeck/typeck_type_placeholder_item_help.rs
@@ -0,0 +1,33 @@
+// This test checks that it proper item type will be suggested when
+// using the `_` type placeholder.
+
+fn test1() -> _ { Some(42) }
+//~^ ERROR the placeholder `_` is not allowed within types on item signatures for return types
+
+const TEST2: _ = 42u32;
+//~^ ERROR the placeholder `_` is not allowed within types on item signatures for constants
+
+const TEST3: _ = Some(42);
+//~^ ERROR the placeholder `_` is not allowed within types on item signatures for constants
+
+const TEST4: fn() -> _ = 42;
+//~^ ERROR the placeholder `_` is not allowed within types on item signatures for functions
+//~| ERROR the placeholder `_` is not allowed within types on item signatures for constant items
+
+trait Test5 {
+    const TEST5: _ = 42;
+    //~^ ERROR the placeholder `_` is not allowed within types on item signatures for constants
+}
+
+struct Test6;
+
+impl Test6 {
+    const TEST6: _ = 13;
+    //~^ ERROR the placeholder `_` is not allowed within types on item signatures for constants
+}
+
+pub fn main() {
+    let _: Option<usize> = test1();
+    let _: f64 = test1();
+    let _: Option<i32> = test1();
+}