gcc/testsuite/gdc.test/fail_compilation/diag8510.d

/*
TEST_OUTPUT:
---
fail_compilation/diag8510.d(10): Error: alias diag8510.a conflicts with alias diag8510.a at fail_compilation/diag8510.d(9)
fail_compilation/diag8510.d(15): Error: alias diag8510.S.a conflicts with alias diag8510.S.a at fail_compilation/diag8510.d(14)
---
*/

alias int a;
alias int a;

int g;
struct S {
    alias g a;
    alias g a;
}