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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/impl-trait/projection.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/impl-trait/projection.rs')
-rw-r--r-- | src/test/ui/impl-trait/projection.rs | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/test/ui/impl-trait/projection.rs b/src/test/ui/impl-trait/projection.rs new file mode 100644 index 000000000..b33802e2b --- /dev/null +++ b/src/test/ui/impl-trait/projection.rs @@ -0,0 +1,29 @@ +// build-pass +// needs to be build-pass, because it is a regression test for a mir validation failure +// that only happens during codegen. + +struct D; + +trait Tr { + type It; + fn foo(self) -> Option<Self::It>; +} + +impl<'a> Tr for &'a D { + type It = (); + fn foo(self) -> Option<()> { None } +} + +fn run<F>(f: F) + where for<'a> &'a D: Tr, + F: Fn(<&D as Tr>::It), +{ + let d = &D; + while let Some(i) = d.foo() { + f(i); + } +} + +fn main() { + run(|_| {}); +} |