diff options
Diffstat (limited to 'src/test/ui/single-use-lifetime/zero-uses-in-fn.rs')
-rw-r--r-- | src/test/ui/single-use-lifetime/zero-uses-in-fn.rs | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/test/ui/single-use-lifetime/zero-uses-in-fn.rs b/src/test/ui/single-use-lifetime/zero-uses-in-fn.rs new file mode 100644 index 000000000..7f9504fe5 --- /dev/null +++ b/src/test/ui/single-use-lifetime/zero-uses-in-fn.rs @@ -0,0 +1,24 @@ +// run-rustfix + +// Test that we DO warn when lifetime name is not used at all. + +#![deny(unused_lifetimes)] +#![allow(dead_code, unused_variables)] + +fn september<'a>() {} +//~^ ERROR lifetime parameter `'a` never used +//~| HELP elide the unused lifetime + +fn october<'a, 'b, T>(s: &'b T) -> &'b T { + //~^ ERROR lifetime parameter `'a` never used + //~| HELP elide the unused lifetime + s +} + +fn november<'a, 'b>(s: &'a str) -> &'a str { + //~^ ERROR lifetime parameter `'b` never used + //~| HELP elide the unused lifetime + s +} + +fn main() {} |