Make sure constructors functions are type checked correctly

This commit is contained in:
Matthew Jasper 2019-05-26 10:43:30 +01:00
parent 0d75ab2293
commit bcf8365675
2 changed files with 127 additions and 0 deletions

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@ -0,0 +1,71 @@
// Unit test for the "user substitutions" that are annotated on each
// node.
struct SomeStruct<T>(T);
fn no_annot() {
let c = 66;
let f = SomeStruct;
f(&c);
}
fn annot_underscore() {
let c = 66;
let f = SomeStruct::<_>;
f(&c);
}
fn annot_reference_any_lifetime() {
let c = 66;
let f = SomeStruct::<&u32>;
f(&c);
}
fn annot_reference_static_lifetime() {
let c = 66;
let f = SomeStruct::<&'static u32>;
f(&c); //~ ERROR
}
fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
let c = 66;
let f = SomeStruct::<&'a u32>;
f(&c); //~ ERROR
}
fn annot_reference_named_lifetime_ok<'a>(c: &'a u32) {
let f = SomeStruct::<&'a u32>;
f(c);
}
fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
let _closure = || {
let c = 66;
let f = SomeStruct::<&'a u32>;
f(&c); //~ ERROR
};
}
fn annot_reference_named_lifetime_across_closure<'a>(_: &'a u32) {
let f = SomeStruct::<&'a u32>;
let _closure = || {
let c = 66;
f(&c); //~ ERROR
};
}
fn annot_reference_named_lifetime_in_closure_ok<'a>(c: &'a u32) {
let _closure = || {
let f = SomeStruct::<&'a u32>;
f(c);
};
}
fn annot_reference_named_lifetime_across_closure_ok<'a>(c: &'a u32) {
let f = SomeStruct::<&'a u32>;
let _closure = || {
f(c);
};
}
fn main() { }

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@ -0,0 +1,56 @@
error[E0597]: `c` does not live long enough
--> $DIR/adt-tuple-struct-calls.rs:27:7
|
LL | f(&c);
| --^^-
| | |
| | borrowed value does not live long enough
| argument requires that `c` is borrowed for `'static`
LL | }
| - `c` dropped here while still borrowed
error[E0597]: `c` does not live long enough
--> $DIR/adt-tuple-struct-calls.rs:33:7
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
...
LL | f(&c);
| --^^-
| | |
| | borrowed value does not live long enough
| argument requires that `c` is borrowed for `'a`
LL | }
| - `c` dropped here while still borrowed
error[E0597]: `c` does not live long enough
--> $DIR/adt-tuple-struct-calls.rs:45:11
|
LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
| -- lifetime `'a` defined here
...
LL | f(&c);
| --^^-
| | |
| | borrowed value does not live long enough
| argument requires that `c` is borrowed for `'a`
LL | };
| - `c` dropped here while still borrowed
error[E0597]: `c` does not live long enough
--> $DIR/adt-tuple-struct-calls.rs:53:11
|
LL | let f = SomeStruct::<&'a u32>;
| - lifetime `'1` appears in the type of `f`
...
LL | f(&c);
| --^^-
| | |
| | borrowed value does not live long enough
| argument requires that `c` is borrowed for `'1`
LL | };
| - `c` dropped here while still borrowed
error: aborting due to 4 previous errors
For more information about this error, try `rustc --explain E0597`.