[Issue 23580] undefined identifier `__builtin___memcpy_chk

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23580

--- Comment #1 from Jacob Carlborg <doob at me.com> ---
If I run the C code manually through the preprocessor this is the relevant
output:

void foo()
{
    __builtin___memcpy_chk (0, 0, 0, __builtin_object_size (0, 0));
}

--