Auto merge of #95082 - spastorino:overlap-inherent-impls, r=nikomatsakis

Overlap inherent impls

r? `@nikomatsakis`

Closes #94526

2 files changed, 47 insertions, 0 deletions

diff --git a/src/test/ui/coherence/coherence-negative-inherent-where-bounds.rs b/src/test/ui/coherence/coherence-negative-inherent-where-bounds.rs
new file mode 100644
index 00000000000..39ccaa6ac35
--- /dev/null
+++ b/src/test/ui/coherence/coherence-negative-inherent-where-bounds.rs
@@ -0,0 +1,25 @@
+// check-pass
+
+#![feature(negative_impls)]
+#![feature(rustc_attrs)]
+#![feature(with_negative_coherence)]
+
+trait Foo {}
+
+impl !Foo for u32 {}
+
+#[rustc_strict_coherence]
+struct MyStruct<T>(T);
+
+impl MyStruct<u32> {
+    fn method(&self) {}
+}
+
+impl<T> MyStruct<T>
+where
+    T: Foo,
+{
+    fn method(&self) {}
+}
+
+fn main() {}
diff --git a/src/test/ui/coherence/coherence-negative-inherent.rs b/src/test/ui/coherence/coherence-negative-inherent.rs
new file mode 100644
index 00000000000..a9e1acc8044
--- /dev/null
+++ b/src/test/ui/coherence/coherence-negative-inherent.rs
@@ -0,0 +1,22 @@
+// check-pass
+
+#![feature(negative_impls)]
+#![feature(rustc_attrs)]
+#![feature(with_negative_coherence)]
+
+#[rustc_strict_coherence]
+trait Foo {}
+
+impl !Foo for u32 {}
+
+struct MyStruct<T>(T);
+
+impl<T: Foo> MyStruct<T> {
+    fn method(&self) {}
+}
+
+impl MyStruct<u32> {
+    fn method(&self) {}
+}
+
+fn main() {}