We accept this testcase after r11-7985.

gcc/testsuite/ChangeLog:
        PR c++/90215
        * g++.dg/cpp1z/fold-lambda4.C: New test.
---
 gcc/testsuite/g++.dg/cpp1z/fold-lambda4.C | 30 +++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/cpp1z/fold-lambda4.C

diff --git a/gcc/testsuite/g++.dg/cpp1z/fold-lambda4.C 
b/gcc/testsuite/g++.dg/cpp1z/fold-lambda4.C
new file mode 100644
index 00000000000..b8bae8602ad
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp1z/fold-lambda4.C
@@ -0,0 +1,30 @@
+// PR c++/90215
+// { dg-do compile { target c++17 } }
+
+struct X
+{
+    template <class F>
+    void f(F f)
+    {
+        f(0);
+    }
+};
+
+template <class... Xs>
+void bug(Xs... xs)
+{
+    int i;
+
+    [&](auto&... ys)
+    {
+        (xs.f([&](auto)
+        {
+            ys;
+        }), ...);
+    }(i);
+}
+
+int main()
+{
+    bug(X{});
+}
-- 
2.31.1.272.g89b43f80a5

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