rust/tests/ui/nll/issue-52213.stderr

error: lifetime may not live long enough
  --> $DIR/issue-52213.rs:3:20
   |
LL | fn transmute_lifetime<'a, 'b, T>(t: &'a (T,)) -> &'b T {
   |                       --  -- lifetime `'b` defined here
   |                       |
   |                       lifetime `'a` defined here
LL |     match (&t,) {
LL |         ((u,),) => u,
   |                    ^ function was supposed to return data with lifetime `'b` but it is returning data with lifetime `'a`
   |
   = help: consider adding the following bound: `'a: 'b`

error: aborting due to previous error
Change compare mode to use -Zborrowck=mir 2019-01-27 11:03:21 +00:00			`error: lifetime may not live long enough`
Fully stabilize NLL 2022-04-01 17:13:25 +00:00			`--> $DIR/issue-52213.rs:3:20`
Change compare mode to use -Zborrowck=mir 2019-01-27 11:03:21 +00:00			`\|`
			`LL \| fn transmute_lifetime<'a, 'b, T>(t: &'a (T,)) -> &'b T {`
			\| -- -- lifetime `'b` defined here
			`\| \|`
			\| lifetime `'a` defined here
Fully stabilize NLL 2022-04-01 17:13:25 +00:00			`LL \| match (&t,) {`
Change compare mode to use -Zborrowck=mir 2019-01-27 11:03:21 +00:00			`LL \| ((u,),) => u,`
Ensure that early-bound function lifetimes are always 'local' During borrowchecking, we treat any free (early-bound) regions on the 'defining type' as `RegionClassification::External`. According to the doc comments, we should only have 'external' regions when checking a closure/generator. However, a plain function can also have some if its regions be considered 'early bound' - this occurs when the region is constrained by an argument, appears in a `where` clause, or in an opaque type. This was causing us to incorrectly mark these regions as 'external', which caused some diagnostic code to act as if we were referring to a 'parent' region from inside a closure. This PR marks all instantiated region variables as 'local' when we're borrow-checking something other than a closure/generator/inline-const. 2021-12-31 21:55:34 +00:00			\| ^ function was supposed to return data with lifetime `'b` but it is returning data with lifetime `'a`
update tests 2019-10-27 14:39:14 +00:00			`\|`
			= help: consider adding the following bound: `'a: 'b`
Change compare mode to use -Zborrowck=mir 2019-01-27 11:03:21 +00:00
			`error: aborting due to previous error`