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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:58 +0000 |
commit | a4b7ed7a42c716ab9f05e351f003d589124fd55d (patch) | |
tree | b620cd3f223850b28716e474e80c58059dca5dd4 /tests/ui/generics/generic-type-params-name-repr.rs | |
parent | Adding upstream version 1.67.1+dfsg1. (diff) | |
download | rustc-a4b7ed7a42c716ab9f05e351f003d589124fd55d.tar.xz rustc-a4b7ed7a42c716ab9f05e351f003d589124fd55d.zip |
Adding upstream version 1.68.2+dfsg1.upstream/1.68.2+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/generics/generic-type-params-name-repr.rs')
-rw-r--r-- | tests/ui/generics/generic-type-params-name-repr.rs | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/tests/ui/generics/generic-type-params-name-repr.rs b/tests/ui/generics/generic-type-params-name-repr.rs new file mode 100644 index 000000000..6e0beec66 --- /dev/null +++ b/tests/ui/generics/generic-type-params-name-repr.rs @@ -0,0 +1,51 @@ +use std::marker; + +struct A; +struct B; +struct C; +struct Foo<T = A, U = B, V = C>(marker::PhantomData<(T,U,V)>); + +struct Hash<T>(marker::PhantomData<T>); +struct HashMap<K, V, H = Hash<K>>(marker::PhantomData<(K,V,H)>); + +fn main() { + // Ensure that the printed type doesn't include the default type params... + let _: Foo<isize> = (); + //~^ ERROR mismatched types + //~| expected struct `Foo`, found `()` + //~| expected struct `Foo<isize>` + //~| found unit type `()` + + // ...even when they're present, but the same types as the defaults. + let _: Foo<isize, B, C> = (); + //~^ ERROR mismatched types + //~| expected struct `Foo`, found `()` + //~| expected struct `Foo<isize>` + //~| found unit type `()` + + // Including cases where the default is using previous type params. + let _: HashMap<String, isize> = (); + //~^ ERROR mismatched types + //~| expected struct `HashMap`, found `()` + //~| expected struct `HashMap<String, isize>` + //~| found unit type `()` + let _: HashMap<String, isize, Hash<String>> = (); + //~^ ERROR mismatched types + //~| expected struct `HashMap`, found `()` + //~| expected struct `HashMap<String, isize>` + //~| found unit type `()` + + // But not when there's a different type in between. + let _: Foo<A, isize, C> = (); + //~^ ERROR mismatched types + //~| expected struct `Foo`, found `()` + //~| expected struct `Foo<A, isize>` + //~| found unit type `()` + + // And don't print <> at all when there's just defaults. + let _: Foo<A, B, C> = (); + //~^ ERROR mismatched types + //~| expected struct `Foo`, found `()` + //~| expected struct `Foo` + //~| found unit type `()` +} |