gcc/testsuite/gdc.test/fail_compilation/diag7050b.d

/*
TEST_OUTPUT:
---
fail_compilation/diag7050b.d(12): Error: `pure` function `diag7050b.f.g` cannot call impure function `diag7050b.f`
---
*/

void f()
{
    pure void g()
    {
        f();
    }
}