[Bug target/36834] structure return ABI for windows targets differs from native MSVC

[mattias at virtutech dot se]

------- Comment #10 from mattias at virtutech dot se  2009-03-21 21:49 -------
Note that C++ objects need not be larger than 8 bytes to qualify for returning
on the stack (and thus subject to this cleanup problem). Any class with a copy
constructor, for example, seems to be affected.
Try compiling:

struct A {
  A();
  A(const A&);
  int x;
};
A f() { return A(); }

This is probably why methods returning string::reverse_iterator make the list.
(http://www.agner.org/optimize/calling_conventions.pdf was useful for
understanding this.)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36834