src/test/ui/non-fmt-panic.fixed

   1 // run-rustfix
   2 // rustfix-only-machine-applicable
   3 // build-pass (FIXME(62277): should be check-pass)
   4 // aux-build:fancy-panic.rs
   5
   6 extern crate fancy_panic;
   7
   8 const C: &str = "abc {}";
   9 static S: &str = "{bla}";
  10
  11 #[allow(unreachable_code)]
  12 fn main() {
  13     panic!("{}", "here's a brace: {"); //~ WARN panic message contains a brace
  14     std::panic!("{}", "another one: }"); //~ WARN panic message contains a brace
  15     core::panic!("{}", "Hello {}"); //~ WARN panic message contains an unused formatting placeholder
  16     assert!(false, "{}", "{:03x} {test} bla");
  17     //~^ WARN panic message contains unused formatting placeholders
  18     assert!(false, "{}", S);
  19     //~^ WARN panic message is not a string literal
  20     assert!(false, "{}", 123);
  21     //~^ WARN panic message is not a string literal
  22     assert!(false, "{:?}", Some(123));
  23     //~^ WARN panic message is not a string literal
  24     debug_assert!(false, "{}", "{{}} bla"); //~ WARN panic message contains braces
  25     panic!("{}", C); //~ WARN panic message is not a string literal
  26     panic!("{}", S); //~ WARN panic message is not a string literal
  27     std::panic::panic_any(123); //~ WARN panic message is not a string literal
  28     core::panic!("{}", &*"abc"); //~ WARN panic message is not a string literal
  29     std::panic::panic_any(Some(123)); //~ WARN panic message is not a string literal
  30     panic!("{}", concat!("{", "}")); //~ WARN panic message contains an unused formatting placeholder
  31     panic!("{}", concat!("{", "{")); //~ WARN panic message contains braces
  32
  33     fancy_panic::fancy_panic!("test {} 123");
  34     //~^ WARN panic message contains an unused formatting placeholder
  35
  36     fancy_panic::fancy_panic!(); // OK
  37     fancy_panic::fancy_panic!(S); // OK
  38
  39     macro_rules! a {
  40         () => { 123 };
  41     }
  42
  43     std::panic::panic_any(a!()); //~ WARN panic message is not a string literal
  44
  45     panic!("{}", 1); //~ WARN panic message is not a string literal
  46     assert!(false, "{}", 1); //~ WARN panic message is not a string literal
  47     debug_assert!(false, "{}", 1); //~ WARN panic message is not a string literal
  48
  49     std::panic::panic_any(123); //~ WARN panic message is not a string literal
  50     std::panic::panic_any(123); //~ WARN panic message is not a string literal
  51
  52     // Check that the lint only triggers for std::panic and core::panic,
  53     // not any panic macro:
  54     macro_rules! panic {
  55         ($e:expr) => ();
  56     }
  57     panic!("{}"); // OK
  58     panic!(S); // OK
  59
  60     a(1);
  61     b(1);
  62     c(1);
  63     d(1);
  64 }
  65
  66 fn a<T: Send + 'static>(v: T) {
  67     std::panic::panic_any(v); //~ WARN panic message is not a string literal
  68     assert!(false, v); //~ WARN panic message is not a string literal
  69 }
  70
  71 fn b<T: std::fmt::Debug + Send + 'static>(v: T) {
  72     std::panic::panic_any(v); //~ WARN panic message is not a string literal
  73     assert!(false, "{:?}", v); //~ WARN panic message is not a string literal
  74 }
  75
  76 fn c<T: std::fmt::Display + Send + 'static>(v: T) {
  77     std::panic::panic_any(v); //~ WARN panic message is not a string literal
  78     assert!(false, "{}", v); //~ WARN panic message is not a string literal
  79 }
  80
  81 fn d<T: std::fmt::Display + std::fmt::Debug + Send + 'static>(v: T) {
  82     std::panic::panic_any(v); //~ WARN panic message is not a string literal
  83     assert!(false, "{}", v); //~ WARN panic message is not a string literal
  84 }