[Issue 16243] wrong C++ argument passing with empty struct and 6 integers

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=16243

--- Comment #17 from Walter Bright <bugzilla at digitalmars.com> ---
On Linux x86, given the code:

  struct S { };
  int test(S s, int a) { return a; }

g++ produces:
    mov EAX,8[ESP]
    ret

while clang++ produces:

    mov EAX,4[ESP]
    ret

This is with optimization on. With it off, the same problem.

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