gcc/testsuite/gdc.test/fail_compilation/fail11714.d

/*
TEST_OUTPUT:
---
fail_compilation/fail11714.d(14): Error: variable `fail11714.c` is a thread-local class and cannot have a static initializer. Use `static this()` to initialize instead.
fail_compilation/fail11714.d(21): Error: variable `fail11714.s` is a thread-local pointer to struct and cannot have a static initializer. Use `static this()` to initialize instead.
---
*/

class C11714
{
    int data;
};

C11714 c = new C11714;  // mutable class reference.

struct S11714
{
    int data;
};

S11714* s = new S11714; // mutable pointer to struct.