1 files changed, 9 insertions, 0 deletions
diff --git a/src/test/ui/panics/panic-2021.rs b/src/test/ui/panics/panic-2021.rs
new file mode 100644
index 000000000..e606612e1
--- /dev/null
+++ b/src/test/ui/panics/panic-2021.rs
@@ -0,0 +1,9 @@
+// edition:2021
+
+fn main() {
+    panic!(123); //~ ERROR: format argument must be a string literal
+    panic!("{}"); //~ ERROR: 1 positional argument in format string
+    core::panic!("{}"); //~ ERROR: 1 positional argument in format string
+    assert!(false, 123); //~ ERROR: format argument must be a string literal
+    assert!(false, "{}"); //~ ERROR: 1 positional argument in format string
+}