1 files changed, 89 insertions, 0 deletions
diff --git a/tests/ui/non-fmt-panic.fixed b/tests/ui/non-fmt-panic.fixed
new file mode 100644
index 00000000000..5191f1877a9
--- /dev/null
+++ b/tests/ui/non-fmt-panic.fixed
@@ -0,0 +1,89 @@
+// run-rustfix
+// rustfix-only-machine-applicable
+// build-pass (FIXME(62277): should be check-pass)
+// aux-build:fancy-panic.rs
+
+extern crate fancy_panic;
+
+const C: &str = "abc {}";
+static S: &str = "{bla}";
+
+#[allow(unreachable_code)]
+fn main() {
+    panic!("{}", "here's a brace: {"); //~ WARN panic message contains a brace
+    unreachable!("{}", "here's a brace: {"); //~ WARN panic message contains a brace
+    std::panic!("{}", "another one: }"); //~ WARN panic message contains a brace
+    core::panic!("{}", "Hello {}"); //~ WARN panic message contains an unused formatting placeholder
+    assert!(false, "{}", "{:03x} {test} bla");
+    //~^ WARN panic message contains unused formatting placeholders
+    assert!(false, "{}", S);
+    //~^ WARN panic message is not a string literal
+    assert!(false, "{}", 123);
+    //~^ WARN panic message is not a string literal
+    assert!(false, "{:?}", Some(123));
+    //~^ WARN panic message is not a string literal
+    debug_assert!(false, "{}", "{{}} bla"); //~ WARN panic message contains braces
+    panic!("{}", C); //~ WARN panic message is not a string literal
+    panic!("{}", S); //~ WARN panic message is not a string literal
+    unreachable!("{}", S); //~ WARN panic message is not a string literal
+    unreachable!("{}", S); //~ WARN panic message is not a string literal
+    std::panic::panic_any(123); //~ WARN panic message is not a string literal
+    core::panic!("{}", &*"abc"); //~ WARN panic message is not a string literal
+    std::panic::panic_any(Some(123)); //~ WARN panic message is not a string literal
+    panic!("{}", concat!("{", "}")); //~ WARN panic message contains an unused formatting placeholder
+    panic!("{}", concat!("{", "{")); //~ WARN panic message contains braces
+
+    fancy_panic::fancy_panic!("test {} 123");
+    //~^ WARN panic message contains an unused formatting placeholder
+
+    fancy_panic::fancy_panic!(); // OK
+    fancy_panic::fancy_panic!(S); // OK
+
+    macro_rules! a {
+        () => { 123 };
+    }
+
+    std::panic::panic_any(a!()); //~ WARN panic message is not a string literal
+    unreachable!("{}", a!()); //~ WARN panic message is not a string literal
+
+    panic!("{}", 1); //~ WARN panic message is not a string literal
+    unreachable!("{}", 1); //~ WARN panic message is not a string literal
+    assert!(false, "{}", 1); //~ WARN panic message is not a string literal
+    debug_assert!(false, "{}", 1); //~ WARN panic message is not a string literal
+
+    std::panic::panic_any(123); //~ WARN panic message is not a string literal
+    std::panic::panic_any(123); //~ WARN panic message is not a string literal
+
+    // Check that the lint only triggers for std::panic and core::panic,
+    // not any panic macro:
+    macro_rules! panic {
+        ($e:expr) => ();
+    }
+    panic!("{}"); // OK
+    panic!(S); // OK
+
+    a(1);
+    b(1);
+    c(1);
+    d(1);
+}
+
+fn a<T: Send + 'static>(v: T) {
+    std::panic::panic_any(v); //~ WARN panic message is not a string literal
+    assert!(false, v); //~ WARN panic message is not a string literal
+}
+
+fn b<T: std::fmt::Debug + Send + 'static>(v: T) {
+    std::panic::panic_any(v); //~ WARN panic message is not a string literal
+    assert!(false, "{:?}", v); //~ WARN panic message is not a string literal
+}
+
+fn c<T: std::fmt::Display + Send + 'static>(v: T) {
+    std::panic::panic_any(v); //~ WARN panic message is not a string literal
+    assert!(false, "{}", v); //~ WARN panic message is not a string literal
+}
+
+fn d<T: std::fmt::Display + std::fmt::Debug + Send + 'static>(v: T) {
+    std::panic::panic_any(v); //~ WARN panic message is not a string literal
+    assert!(false, "{}", v); //~ WARN panic message is not a string literal
+}