Do not suggest changes to str literal if it isn't one

2 files changed, 28 insertions, 0 deletions

diff --git a/src/test/ui/suggestions/issue-48364.rs b/src/test/ui/suggestions/issue-48364.rs
new file mode 100644
index 00000000000..82cb722a656
--- /dev/null
+++ b/src/test/ui/suggestions/issue-48364.rs
@@ -0,0 +1,16 @@
+// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+fn foo() -> bool {
+    b"".starts_with(stringify!(foo))
+    //~^ ERROR mismatched types
+}
+
+fn main() {}
diff --git a/src/test/ui/suggestions/issue-48364.stderr b/src/test/ui/suggestions/issue-48364.stderr
new file mode 100644
index 00000000000..b420654a32d
--- /dev/null
+++ b/src/test/ui/suggestions/issue-48364.stderr
@@ -0,0 +1,12 @@
+error[E0308]: mismatched types
+  --> $DIR/issue-48364.rs:12:21
+   |
+LL |     b"".starts_with(stringify!(foo))
+   |                     ^^^^^^^^^^^^^^^ expected slice, found str
+   |
+   = note: expected type `&[u8]`
+              found type `&'static str`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.