error: a dangling pointer will be produced because the temporary `CString` will be dropped
  --> $DIR/calls.rs:27:29
   |
LL |         let ptr = cstring().as_ptr();
   |                   --------- ^^^^^^ this pointer will immediately be invalid
   |                   |
   |                   this `CString` is deallocated at the end of the statement, bind it to a variable to extend its lifetime
   |
   = note: pointers do not have a lifetime; when calling `as_ptr` the `CString` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
   = help: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
note: the lint level is defined here
  --> $DIR/calls.rs:1:9
   |
LL | #![deny(dangling_pointers_from_temporaries)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: a dangling pointer will be produced because the temporary `CString` will be dropped
  --> $DIR/calls.rs:32:29
   |
LL |         let ptr = cstring().as_ptr();
   |                   --------- ^^^^^^ this pointer will immediately be invalid
   |                   |
   |                   this `CString` is deallocated at the end of the statement, bind it to a variable to extend its lifetime
   |
   = note: pointers do not have a lifetime; when calling `as_ptr` the `CString` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
   = help: for more information, see <https://doc.rust-lang.org/reference/destructors.html>

error: a dangling pointer will be produced because the temporary `CString` will be dropped
  --> $DIR/calls.rs:41:37
   |
LL |     let _ptr: *const u8 = cstring().as_ptr().cast();
   |                           --------- ^^^^^^ this pointer will immediately be invalid
   |                           |
   |                           this `CString` is deallocated at the end of the statement, bind it to a variable to extend its lifetime
   |
   = note: pointers do not have a lifetime; when calling `as_ptr` the `CString` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
   = help: for more information, see <https://doc.rust-lang.org/reference/destructors.html>

error: a dangling pointer will be produced because the temporary `CString` will be dropped
  --> $DIR/calls.rs:43:41
   |
LL |     let _ptr: *const u8 = { cstring() }.as_ptr().cast();
   |                           ------------- ^^^^^^ this pointer will immediately be invalid
   |                           |
   |                           this `CString` is deallocated at the end of the statement, bind it to a variable to extend its lifetime
   |
   = note: pointers do not have a lifetime; when calling `as_ptr` the `CString` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
   = help: for more information, see <https://doc.rust-lang.org/reference/destructors.html>

error: a dangling pointer will be produced because the temporary `CString` will be dropped
  --> $DIR/calls.rs:45:39
   |
LL |     let _ptr: *const u8 = { cstring().as_ptr() }.cast();
   |                             --------- ^^^^^^ this pointer will immediately be invalid
   |                             |
   |                             this `CString` is deallocated at the end of the statement, bind it to a variable to extend its lifetime
   |
   = note: pointers do not have a lifetime; when calling `as_ptr` the `CString` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
   = help: for more information, see <https://doc.rust-lang.org/reference/destructors.html>

error: aborting due to 5 previous errors