2 files changed, 18 insertions, 0 deletions
diff --git a/testing/tests/ui/lit_on_assignment_lhs.rs b/testing/tests/ui/lit_on_assignment_lhs.rs
new file mode 100644
index 0000000..1793770
--- /dev/null
+++ b/testing/tests/ui/lit_on_assignment_lhs.rs
@@ -0,0 +1,11 @@
+use askama::Template;
+
+#[derive(Template)]
+#[template(
+    source = "{%let 7=x%}",
+    ext = "txt"
+)]
+struct MyTemplate;
+
+fn main() {
+}
diff --git a/testing/tests/ui/lit_on_assignment_lhs.stderr b/testing/tests/ui/lit_on_assignment_lhs.stderr
new file mode 100644
index 0000000..fa488cb
--- /dev/null
+++ b/testing/tests/ui/lit_on_assignment_lhs.stderr
@@ -0,0 +1,7 @@
+error: proc-macro derive panicked
+ --> $DIR/lit_on_assignment_lhs.rs:3:10
+  |
+3 | #[derive(Template)]
+  |          ^^^^^^^^
+  |
+  = help: message: Cannot have literals on the left-hand-side of an assignment.