message: test for infinite value in f*_fast
diff: fn main() {
  unsafe {
  - let _x: f32 = core::intrinsics::fmul_fast(3.4f32, f32::NAN); //~ ERROR `fmul_fast` intrinsic called with non-finite value as second parameter
  + let _x: f32 = core::intrinsics::fmul_fast(3.4f32, f32::INFINITY); //~ ERROR `fmul_fast` intrinsic called with non-finite value as second parameter
  }
  }
  