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1// RUN: %clang_cc1 -std=c++20 %s -triple %itanium_abi_triple -emit-llvm -o - | FileCheck %s2export module FOO;3namespace Outer {4class Y;5class Inner {6 class X;7 void Fn (X &, Y &); // #28};9// CHECK-DAG: void @_ZN5OuterW3FOO5Inner2FnERNS1_1XERNS_S0_1YE(10void Inner::Fn (X &, Y &) {}11}12 13