diff options
Diffstat (limited to 'tests/ui/lint/dangling-pointers-from-temporaries/cstring-as-ptr.stderr')
| -rw-r--r-- | tests/ui/lint/dangling-pointers-from-temporaries/cstring-as-ptr.stderr | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tests/ui/lint/dangling-pointers-from-temporaries/cstring-as-ptr.stderr b/tests/ui/lint/dangling-pointers-from-temporaries/cstring-as-ptr.stderr index 5289fbb8723..d4126ba231f 100644 --- a/tests/ui/lint/dangling-pointers-from-temporaries/cstring-as-ptr.stderr +++ b/tests/ui/lint/dangling-pointers-from-temporaries/cstring-as-ptr.stderr @@ -15,6 +15,8 @@ LL | let s = CString::new("some text").unwrap().as_ptr(); | 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: you must make sure that the variable you bind the `CString` to lives at least as long as the pointer returned by the call to `as_ptr` + = help: in particular, if this pointer is returned from the current function, binding the `CString` inside the function will not suffice = help: for more information, see <https://doc.rust-lang.org/reference/destructors.html> note: the lint level is defined here --> $DIR/cstring-as-ptr.rs:2:9 @@ -34,6 +36,8 @@ LL | mymacro!(); | ---------- in this macro invocation | = 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: you must make sure that the variable you bind the `CString` to lives at least as long as the pointer returned by the call to `as_ptr` + = help: in particular, if this pointer is returned from the current function, binding the `CString` inside the function will not suffice = help: for more information, see <https://doc.rust-lang.org/reference/destructors.html> = note: this error originates in the macro `mymacro` (in Nightly builds, run with -Z macro-backtrace for more info) |