src/test/codegen-units/item-collection/implicit-panic-call.rs

   1 // compile-flags:-Zprint-mono-items=lazy
   2
   3 // rust-lang/rust#90405
   4 // Ensure implicit panic calls are collected
   5
   6 #![feature(lang_items)]
   7 #![feature(no_core)]
   8 #![crate_type = "lib"]
   9 #![no_core]
  10 #![no_std]
  11
  12 #[lang = "panic_location"]
  13 struct Location<'a> {
  14     _file: &'a str,
  15     _line: u32,
  16     _col: u32,
  17 }
  18
  19 #[lang = "panic"]
  20 #[inline]
  21 #[track_caller]
  22 fn panic(_: &'static str) -> ! {
  23     loop {}
  24 }
  25
  26 #[lang = "sized"]
  27 trait Sized {}
  28
  29 #[lang = "copy"]
  30 trait Copy {}
  31
  32 #[lang = "freeze"]
  33 trait Freeze {}
  34
  35 impl Copy for i32 {}
  36
  37 #[lang = "div"]
  38 trait Div<Rhs = Self> {
  39     type Output;
  40     fn div(self, rhs: Rhs) -> Self::Output;
  41 }
  42
  43 impl Div for i32 {
  44     type Output = i32;
  45     fn div(self, rhs: i32) -> i32 {
  46         self / rhs
  47     }
  48 }
  49
  50 #[allow(unconditional_panic)]
  51 pub fn foo() {
  52     // This implicitly generates a panic call.
  53     let _ = 1 / 0;
  54 }
  55
  56 //~ MONO_ITEM fn foo
  57 //~ MONO_ITEM fn <i32 as Div>::div
  58 //~ MONO_ITEM fn panic