Lower string literals with real val, not default

crates/hir_def/src/body/lower.rs

@@ -923,7 +923,10 @@ impl From<ast::LiteralKind> for Literal {
                 let text = bs.value().map(Box::from).unwrap_or_else(Default::default);
                 Literal::ByteString(text)
             }
-            LiteralKind::String(_) => Literal::String(Default::default()),
+            LiteralKind::String(s) => {
+                let text = s.value().map(Box::from).unwrap_or_else(Default::default);
+                Literal::String(text)
+            }
             LiteralKind::Byte => Literal::Uint(Default::default(), Some(BuiltinUint::U8)),
             LiteralKind::Bool(val) => Literal::Bool(val),
             LiteralKind::Char => Literal::Char(Default::default()),

crates/ide/src/hover/tests.rs

@@ -3487,6 +3487,27 @@ const FOO$0: usize = 1 << 100;
 
             ---
 
+            This is a doc
+        "#]],
+    );
+    check(
+        r#"
+/// This is a doc
+const FOO$0: &str = "bar";
+"#,
+        expect![[r#"
+            *FOO*
+
+            ```rust
+            test
+            ```
+
+            ```rust
+            const FOO: &str = "bar"
+            ```
+
+            ---
+
             This is a doc
         "#]],
     );