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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/traits/suggest-where-clause.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/traits/suggest-where-clause.rs')
-rw-r--r-- | src/test/ui/traits/suggest-where-clause.rs | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/test/ui/traits/suggest-where-clause.rs b/src/test/ui/traits/suggest-where-clause.rs new file mode 100644 index 000000000..46d047a2d --- /dev/null +++ b/src/test/ui/traits/suggest-where-clause.rs @@ -0,0 +1,36 @@ +use std::mem; + +struct Misc<T:?Sized>(T); + +fn check<T: Iterator, U: ?Sized>() { + // suggest a where-clause, if needed + mem::size_of::<U>(); + //~^ ERROR the size for values of type + + mem::size_of::<Misc<U>>(); + //~^ ERROR the size for values of type + + // ... even if T occurs as a type parameter + + <u64 as From<T>>::from; + //~^ ERROR `u64: From<T>` is not satisfied + + <u64 as From<<T as Iterator>::Item>>::from; + //~^ ERROR `u64: From<<T as Iterator>::Item>` is not satisfied + + // ... but not if there are inference variables + + <Misc<_> as From<T>>::from; + //~^ ERROR `Misc<_>: From<T>` is not satisfied + + // ... and also not if the error is not related to the type + + mem::size_of::<[T]>(); + //~^ ERROR the size for values of type + + mem::size_of::<[&U]>(); + //~^ ERROR the size for values of type +} + +fn main() { +} |