[Issue 19937] object._d_assert_fail linker error if compiling with -checkaction=context

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19937

--- Comment #3 from Seb <greeenify at gmail.com> ---
BTW a workaround is to do force the instantiation e.g. with the following hack:

```
cat << EOF > workaround.d
void test(ulong x, ulong y){
    assert(x < y);
}
EOF
```

```
dmd -checkaction=context -c workaround.d
dmd -checkaction=context workaround.o checkaction.d 
```

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