rustc/tests/ui/lint/fn-ptr-comparisons.stderr

warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
  --> $DIR/fn-ptr-comparisons.rs:26:13
   |
LL |     let _ = f == a;
   |             ^^^^^^
   |
   = 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
help: refactor your code, or use `std::ptr::fn_addr_eq` to suppress the lint
   |
LL |     let _ = std::ptr::fn_addr_eq(f, a as fn());
   |             +++++++++++++++++++++ ~   ++++++++

warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
  --> $DIR/fn-ptr-comparisons.rs:28:13
   |
LL |     let _ = f != a;
   |             ^^^^^^
   |
   = 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>
help: refactor your code, or use `std::ptr::fn_addr_eq` to suppress the lint
   |
LL |     let _ = !std::ptr::fn_addr_eq(f, a as fn());
   |             ++++++++++++++++++++++ ~   ++++++++

warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
  --> $DIR/fn-ptr-comparisons.rs:30:13
   |
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>
help: refactor your code, or use `std::ptr::fn_addr_eq` to suppress the lint
   |
LL |     let _ = std::ptr::fn_addr_eq(f, g);
   |             +++++++++++++++++++++ ~  +

warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
  --> $DIR/fn-ptr-comparisons.rs:32:13
   |
LL |     let _ = f == f;
   |             ^^^^^^
   |
   = 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>
help: refactor your code, or use `std::ptr::fn_addr_eq` to suppress the lint
   |
LL |     let _ = std::ptr::fn_addr_eq(f, f);
   |             +++++++++++++++++++++ ~  +

warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
  --> $DIR/fn-ptr-comparisons.rs:34:13
   |
LL |     let _ = 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>
help: refactor your code, or use `std::ptr::fn_addr_eq` to suppress the lint
   |
LL |     let _ = std::ptr::fn_addr_eq(g, g);
   |             +++++++++++++++++++++ ~  +

warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
  --> $DIR/fn-ptr-comparisons.rs:36:13
   |
LL |     let _ = 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>
help: refactor your code, or use `std::ptr::fn_addr_eq` to suppress the lint
   |
LL |     let _ = std::ptr::fn_addr_eq(g, g);
   |             +++++++++++++++++++++ ~  +

warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
  --> $DIR/fn-ptr-comparisons.rs:38:13
   |
LL |     let _ = &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>
help: refactor your code, or use `std::ptr::fn_addr_eq` to suppress the lint
   |
LL |     let _ = std::ptr::fn_addr_eq(g, g);
   |             ~~~~~~~~~~~~~~~~~~~~~ ~  +

warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
  --> $DIR/fn-ptr-comparisons.rs:40:13
   |
LL |     let _ = a as fn() == 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>
help: refactor your code, or use `std::ptr::fn_addr_eq` to suppress the lint
   |
LL |     let _ = std::ptr::fn_addr_eq(a as fn(), g);
   |             +++++++++++++++++++++         ~  +

warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
  --> $DIR/fn-ptr-comparisons.rs:44:13
   |
LL |     let _ = cfn == c;
   |             ^^^^^^^^
   |
   = 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>
help: refactor your code, or use `std::ptr::fn_addr_eq` to suppress the lint
   |
LL |     let _ = std::ptr::fn_addr_eq(cfn, c as extern "C" fn());
   |             +++++++++++++++++++++   ~   +++++++++++++++++++

warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
  --> $DIR/fn-ptr-comparisons.rs:48:13
   |
LL |     let _ = argsfn == args;
   |             ^^^^^^^^^^^^^^
   |
   = 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>
help: refactor your code, or use `std::ptr::fn_addr_eq` to suppress the lint
   |
LL |     let _ = std::ptr::fn_addr_eq(argsfn, args as extern "C" fn(i32) -> i32);
   |             +++++++++++++++++++++      ~      +++++++++++++++++++++++++++++

warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
  --> $DIR/fn-ptr-comparisons.rs:52:13
   |
LL |     let _ = t == test;
   |             ^^^^^^^^^
   |
   = 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>
help: refactor your code, or use `std::ptr::fn_addr_eq` to suppress the lint
   |
LL |     let _ = std::ptr::fn_addr_eq(t, test as unsafe extern "C" fn());
   |             +++++++++++++++++++++ ~      ++++++++++++++++++++++++++

warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
  --> $DIR/fn-ptr-comparisons.rs:56:13
   |
LL |     let _ = a1.f == a2.f;
   |             ^^^^^^^^^^^^
   |
   = 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>
help: refactor your code, or use `std::ptr::fn_addr_eq` to suppress the lint
   |
LL |     let _ = std::ptr::fn_addr_eq(a1.f, a2.f);
   |             +++++++++++++++++++++    ~     +

warning: 12 warnings emitted