warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
  --> $DIR/fn-ptr-comparisons-weird.rs:5:5
   |
LL | #[derive(PartialEq, Eq)]
   |          --------- in this derive macro expansion
LL | struct A {
LL |     f: fn(),
   |     ^^^^^^^
   |
   = note: the address of the same function can vary between different codegen units
   = note: furthermore, different functions could have the same address after being merged together
   = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>
   = note: `#[warn(unpredictable_function_pointer_comparisons)]` on by default

warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
  --> $DIR/fn-ptr-comparisons-weird.rs:25:13
   |
LL |     let _ = f > g;
   |             ^^^^^
   |
   = note: the address of the same function can vary between different codegen units
   = note: furthermore, different functions could have the same address after being merged together
   = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>

warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
  --> $DIR/fn-ptr-comparisons-weird.rs:27:13
   |
LL |     let _ = f >= g;
   |             ^^^^^^
   |
   = note: the address of the same function can vary between different codegen units
   = note: furthermore, different functions could have the same address after being merged together
   = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>

warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
  --> $DIR/fn-ptr-comparisons-weird.rs:29:13
   |
LL |     let _ = f <= g;
   |             ^^^^^^
   |
   = note: the address of the same function can vary between different codegen units
   = note: furthermore, different functions could have the same address after being merged together
   = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>

warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
  --> $DIR/fn-ptr-comparisons-weird.rs:31:13
   |
LL |     let _ = f < g;
   |             ^^^^^
   |
   = note: the address of the same function can vary between different codegen units
   = note: furthermore, different functions could have the same address after being merged together
   = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>

warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
  --> $DIR/fn-ptr-comparisons-weird.rs:33:13
   |
LL |     let _ = assert_eq!(g, g);
   |             ^^^^^^^^^^^^^^^^
   |
   = note: the address of the same function can vary between different codegen units
   = note: furthermore, different functions could have the same address after being merged together
   = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>
   = note: this warning originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
  --> $DIR/fn-ptr-comparisons-weird.rs:35:13
   |
LL |     let _ = assert_ne!(g, g);
   |             ^^^^^^^^^^^^^^^^
   |
   = note: the address of the same function can vary between different codegen units
   = note: furthermore, different functions could have the same address after being merged together
   = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>
   = note: this warning originates in the macro `assert_ne` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: 7 warnings emitted