gcc/testsuite/gdc.test/fail_compilation/ice15092.d

/*
TEST_OUTPUT:
---
fail_compilation/ice15092.d(13): Error: struct `ice15092.A.S` conflicts with struct `ice15092.A.S` at fail_compilation/ice15092.d(12)
fail_compilation/ice15092.d(16): Error: class `ice15092.A.C` conflicts with class `ice15092.A.C` at fail_compilation/ice15092.d(15)
fail_compilation/ice15092.d(19): Error: interface `ice15092.A.I` conflicts with interface `ice15092.A.I` at fail_compilation/ice15092.d(18)
---
*/

class A
{
    struct S {}
    struct S {}

    class C {}
    class C {}

    interface I {}
    interface I {}
}