src/test/ui/asm/naked-invalid-attr.rs

   1 // Checks that #[naked] attribute can be placed on function definitions only.
   2 //
   3 // needs-asm-support
   4 #![feature(asm)]
   5 #![feature(naked_functions)]
   6 #![naked] //~ ERROR should be applied to a function definition
   7
   8 extern "C" {
   9     #[naked] //~ ERROR should be applied to a function definition
  10     fn f();
  11 }
  12
  13 #[naked] //~ ERROR should be applied to a function definition
  14 #[repr(C)]
  15 struct S {
  16     a: u32,
  17     b: u32,
  18 }
  19
  20 trait Invoke {
  21     #[naked] //~ ERROR should be applied to a function definition
  22     extern "C" fn invoke(&self);
  23 }
  24
  25 impl Invoke for S {
  26     #[naked]
  27     extern "C" fn invoke(&self) {
  28         unsafe { asm!("", options(noreturn)) }
  29     }
  30 }
  31
  32 #[naked]
  33 extern "C" fn ok() {
  34     unsafe { asm!("", options(noreturn)) }
  35 }
  36
  37 impl S {
  38     #[naked]
  39     extern "C" fn g() {
  40         unsafe { asm!("", options(noreturn)) }
  41     }
  42
  43     #[naked]
  44     extern "C" fn h(&self) {
  45         unsafe { asm!("", options(noreturn)) }
  46     }
  47 }
  48
  49 fn main() {
  50     #[naked] || {}; //~ ERROR should be applied to a function definition
  51 }