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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/ui/impl-trait/issues/infinite-impl-trait-issue-38064.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/impl-trait/issues/infinite-impl-trait-issue-38064.rs')
-rw-r--r-- | tests/ui/impl-trait/issues/infinite-impl-trait-issue-38064.rs | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/tests/ui/impl-trait/issues/infinite-impl-trait-issue-38064.rs b/tests/ui/impl-trait/issues/infinite-impl-trait-issue-38064.rs new file mode 100644 index 000000000..451ddb3cc --- /dev/null +++ b/tests/ui/impl-trait/issues/infinite-impl-trait-issue-38064.rs @@ -0,0 +1,25 @@ +// Test that attempts to construct infinite types via impl trait fail +// in a graceful way. +// +// Regression test for #38064. + +trait Quux {} + +fn foo() -> impl Quux { //~ ERROR cannot resolve opaque type + struct Foo<T>(T); + impl<T> Quux for Foo<T> {} + Foo(bar()) +} + +fn bar() -> impl Quux { //~ ERROR cannot resolve opaque type + struct Bar<T>(T); + impl<T> Quux for Bar<T> {} + Bar(foo()) +} + +// effectively: +// struct Foo(Bar); +// struct Bar(Foo); +// should produce an error about infinite size + +fn main() { foo(); } |