// enough to store `y`.
//
// The error is reported in the caller: invoking the closure links the
-// lifetime of the borrow that is given as `y` and forces it to live
-// too long.
+// lifetime of the variable that is given as `y` (via subtyping) and
+// thus forces the corresponding borrow to live too long. This is
+// basically checking that the MIR type checker correctly enforces the
+// closure signature.
// compile-flags:-Znll -Zborrowck=mir -Zverbose
note: External requirements
- --> $DIR/escape-argument.rs:34:38
+ --> $DIR/escape-argument.rs:36:38
|
-34 | let mut closure = expect_sig(|p, y| *p = y);
+36 | let mut closure = expect_sig(|p, y| *p = y);
| ^^^^^^^^^^^^^
|
= note: defining type: DefId(0/1:9 ~ escape_argument[317d]::test[0]::{{closure}}[0]) with closure substs [
= note: number of external vids: 1
note: No external requirements
- --> $DIR/escape-argument.rs:28:1
+ --> $DIR/escape-argument.rs:30:1
|
-28 | / fn test() {
-29 | | let x = 44;
-30 | | let mut p = &x;
-31 | |
+30 | / fn test() {
+31 | | let x = 44;
+32 | | let mut p = &x;
+33 | |
... |
-39 | | deref(p);
-40 | | }
+41 | | deref(p);
+42 | | }
| |_^
|
= note: defining type: DefId(0/0:3 ~ escape_argument[317d]::test[0]) with substs []
error[E0597]: borrowed value does not live long enough
- --> $DIR/escape-argument.rs:36:6
+ --> $DIR/escape-argument.rs:38:6
|
-33 | let y = 22;
+35 | let y = 22;
| - temporary value created here
...
-36 | }
+38 | }
| ^ temporary value dropped here while still borrowed
|
= note: consider using a `let` binding to increase its lifetime