1 files changed, 56 insertions, 0 deletions
diff --git a/src/test/ui/symbol-names/issue-75326.rs b/src/test/ui/symbol-names/issue-75326.rs
new file mode 100644
index 000000000..4a1f5a212
--- /dev/null
+++ b/src/test/ui/symbol-names/issue-75326.rs
@@ -0,0 +1,56 @@
+// build-fail
+// revisions: legacy v0
+//[legacy]compile-flags: -Z unstable-options -C symbol-mangling-version=legacy
+//[v0]compile-flags: -C symbol-mangling-version=v0
+//[legacy]normalize-stderr-test: "h[\w{16}]+" -> "SYMBOL_HASH"
+
+#![feature(rustc_attrs)]
+
+pub(crate) struct Foo<I, E>(I, E);
+
+pub trait Iterator2 {
+    type Item;
+
+    fn next(&mut self) -> Option<Self::Item>;
+
+    fn find<P>(&mut self, predicate: P) -> Option<Self::Item>
+    where
+        Self: Sized,
+        P: FnMut(&Self::Item) -> bool,
+    {
+        unimplemented!()
+    }
+}
+
+struct Bar;
+
+impl Iterator2 for Bar {
+    type Item = (u32, u16);
+
+    fn next(&mut self) -> Option<Self::Item> {
+        unimplemented!()
+    }
+}
+
+impl<I, T, E> Iterator2 for Foo<I, E>
+where
+    I: Iterator2<Item = (T, E)>,
+{
+    type Item = T;
+
+    #[rustc_symbol_name]
+    //[legacy]~^ ERROR symbol-name(_ZN72_$LT$issue_75326..Foo$LT$I$C$E$GT$$u20$as$u20$issue_75326..Iterator2$GT$4next
+    //[legacy]~| ERROR demangling(<issue_75326::Foo<I,E> as issue_75326::Iterator2>::next
+    //[legacy]~| ERROR demangling-alt(<issue_75326::Foo<I,E> as issue_75326::Iterator2>::next)
+    //[v0]~^^^^  ERROR symbol-name
+    //[v0]~|     ERROR demangling
+    //[v0]~|     ERROR demangling-alt(<issue_75326::Foo<_, _> as issue_75326::Iterator2>::next)
+    fn next(&mut self) -> Option<Self::Item> {
+        self.find(|_| true)
+    }
+}
+
+fn main() {
+    let mut a = Foo(Bar, 1u16);
+    let _ = a.next();
+}