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Diffstat (limited to 'tests/ui/lint/lint-temporary-cstring-as-ptr.stderr')
| -rw-r--r-- | tests/ui/lint/lint-temporary-cstring-as-ptr.stderr | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/tests/ui/lint/lint-temporary-cstring-as-ptr.stderr b/tests/ui/lint/lint-temporary-cstring-as-ptr.stderr new file mode 100644 index 000000000..79ef57dd1 --- /dev/null +++ b/tests/ui/lint/lint-temporary-cstring-as-ptr.stderr @@ -0,0 +1,18 @@ +error: getting the inner pointer of a temporary `CString` + --> $DIR/lint-temporary-cstring-as-ptr.rs:7:48 + | +LL | let s = CString::new("some text").unwrap().as_ptr(); + | ---------------------------------- ^^^^^^ this pointer will 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/lint-temporary-cstring-as-ptr.rs:2:9 + | +LL | #![deny(temporary_cstring_as_ptr)] + | ^^^^^^^^^^^^^^^^^^^^^^^^ + +error: aborting due to previous error + |