src/test/ui/issues/issue-23781.rs

   1 // run-pass
   2 use std::fmt;
   3
   4 struct Foo;
   5 impl fmt::Debug for Foo {
   6     fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
   7         println!("<Foo as Debug>::fmt()");
   8
   9         write!(fmt, "")
  10     }
  11 }
  12
  13 fn test1() {
  14     let foo_str = format!("{:?}", Foo);
  15
  16     println!("{}", foo_str);
  17 }
  18
  19 fn test2() {
  20     println!("{:?}", Foo);
  21 }
  22
  23 fn main() {
  24     // This works fine
  25     test1();
  26
  27     // This fails
  28     test2();
  29 }