[Bug c++/66666] ARM wrong copy constructor address on multiple inheritance

[mikpelinux at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66666

--- Comment #7 from Mikael Pettersson <mikpelinux at gmail dot com> ---
The test case in comment #0 stopped breaking on trunk with r221077, the fix for
PR65236 (a gcc-5 IPA regression).  Backporting r221077 to 4.9.3 unbreaks this
test case there.  However:

- I can't get this test case to fail anywhere except on ARM (x86_64, sparc,
m68k all work)
- The PR65236 test case doesn't fail with 4.9.3 on ARM

so I suspect a target-dependent issue here, and r221077 possibly just masks it.