gcc/testsuite/gdc.test/fail_compilation/fail93.d

/*
TEST_OUTPUT:
---
fail_compilation/fail93.d(13): Error: variable i is shadowing variable fail93.main.i
---
*/

// accepts-valid with DMD0.120. volatile as well as synchronized

void main()
{
    int i = 1;
    synchronized int i = 2; // should fail to compile
}