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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/never_type/impl-for-never.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/never_type/impl-for-never.rs')
-rw-r--r-- | tests/ui/never_type/impl-for-never.rs | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/tests/ui/never_type/impl-for-never.rs b/tests/ui/never_type/impl-for-never.rs new file mode 100644 index 000000000..9423f0885 --- /dev/null +++ b/tests/ui/never_type/impl-for-never.rs @@ -0,0 +1,27 @@ +// run-pass + +#![feature(never_type)] + +// Test that we can call static methods on ! both directly and when it appears in a generic + +trait StringifyType { + fn stringify_type() -> &'static str; +} + +impl StringifyType for ! { + fn stringify_type() -> &'static str { + "!" + } +} + +fn maybe_stringify<T: StringifyType>(opt: Option<T>) -> &'static str { + match opt { + Some(_) => T::stringify_type(), + None => "none", + } +} + +fn main() { + println!("! is {}", <!>::stringify_type()); + println!("None is {}", maybe_stringify(None::<!>)); +} |