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Diffstat (limited to '')
-rw-r--r-- | src/test/ui/where-clauses/where-for-self-2.rs | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/test/ui/where-clauses/where-for-self-2.rs b/src/test/ui/where-clauses/where-for-self-2.rs new file mode 100644 index 000000000..37c6954fd --- /dev/null +++ b/src/test/ui/where-clauses/where-for-self-2.rs @@ -0,0 +1,24 @@ +// Test that we can quantify lifetimes outside a constraint (i.e., including +// the self type) in a where clause. Specifically, test that implementing for a +// specific lifetime is not enough to satisfy the `for<'a> ...` constraint, which +// should require *all* lifetimes. + +static X: &'static u32 = &42; + +trait Bar { + fn bar(&self); +} + +impl Bar for &'static u32 { + fn bar(&self) {} +} + +fn foo<T>(x: &T) +where + for<'a> &'a T: Bar, +{ +} + +fn main() { + foo(&X); //~ ERROR implementation of `Bar` is not general enough +} |