1 files changed, 18 insertions, 0 deletions
diff --git a/tests/ui/suggestions/type-mismatch-byte-literal.rs b/tests/ui/suggestions/type-mismatch-byte-literal.rs
new file mode 100644
index 000000000..34199f8c3
--- /dev/null
+++ b/tests/ui/suggestions/type-mismatch-byte-literal.rs
@@ -0,0 +1,18 @@
+// Tests that a suggestion is issued for type mismatch errors when a
+// u8 is expected and a char literal which is ASCII is supplied.
+
+fn foo(_t: u8) {}
+
+fn main() {
+    let _x: u8 = 'X';
+    //~^ ERROR: mismatched types [E0308]
+    //~| HELP: if you meant to write a byte literal, prefix with `b`
+
+    foo('#');
+    //~^ ERROR: mismatched types [E0308]
+    //~| HELP: if you meant to write a byte literal, prefix with `b`
+
+    // Do not issue the suggestion if the char literal isn't ASCII
+    let _t: u8 = '€';
+    //~^ ERROR: mismatched types [E0308]
+}