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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:06:37 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:06:37 +0000
commit246f239d9f40f633160f0c18f87a20922d4e77bb (patch)
tree5a88572663584b3d4d28e5a20e10abab1be40884 /src/test/ui/generic-associated-types/type-param-defaults.rs
parentReleasing progress-linux version 1.64.0+dfsg1-1~progress7.99u1. (diff)
downloadrustc-246f239d9f40f633160f0c18f87a20922d4e77bb.tar.xz
rustc-246f239d9f40f633160f0c18f87a20922d4e77bb.zip
Merging debian version 1.65.0+dfsg1-2.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--src/test/ui/generic-associated-types/type-param-defaults.rs34
1 files changed, 34 insertions, 0 deletions
diff --git a/src/test/ui/generic-associated-types/type-param-defaults.rs b/src/test/ui/generic-associated-types/type-param-defaults.rs
new file mode 100644
index 000000000..f034076b0
--- /dev/null
+++ b/src/test/ui/generic-associated-types/type-param-defaults.rs
@@ -0,0 +1,34 @@
+// Check that we disallow GAT param defaults, even with `invalid_type_param_default` allowed
+
+#![allow(invalid_type_param_default)]
+
+trait Trait {
+ type Assoc<T = u32>;
+ //~^ defaults for type parameters are only allowed
+}
+
+impl Trait for () {
+ type Assoc<T = u32> = u64;
+ //~^ defaults for type parameters are only allowed
+}
+
+impl Trait for u32 {
+ type Assoc<T = u32> = T;
+ //~^ defaults for type parameters are only allowed
+}
+
+trait Other {}
+impl Other for u32 {}
+
+fn foo<T>()
+where
+ T: Trait<Assoc = u32>,
+ T::Assoc: Other {
+ }
+
+fn main() {
+ // errors
+ foo::<()>();
+ // works
+ foo::<u32>();
+}