From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:13 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- tests/ui/nll/issue-47470.rs | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 tests/ui/nll/issue-47470.rs (limited to 'tests/ui/nll/issue-47470.rs') diff --git a/tests/ui/nll/issue-47470.rs b/tests/ui/nll/issue-47470.rs new file mode 100644 index 000000000..72ee7f886 --- /dev/null +++ b/tests/ui/nll/issue-47470.rs @@ -0,0 +1,22 @@ +// Regression test for #47470: cached results of projections were +// causing region relations not to be enforced at all the places where +// they have to be enforced. + +struct Foo<'a>(&'a ()); +trait Bar { + type Assoc; + fn get(self) -> Self::Assoc; +} + +impl<'a> Bar for Foo<'a> { + type Assoc = &'a u32; + fn get(self) -> Self::Assoc { + let local = 42; + &local //~ ERROR cannot return reference to local variable `local` + } +} + +fn main() { + let f = Foo(&()).get(); + println!("{}", f); +} -- cgit v1.2.3