Unable to #include <memory> - compilation errors within (MKRZero)

Hello,
I tried importing to use smart pointers in my sketch (however advisable).
I've seen that they are used on Arduino ([forum post](https://forum.arduino.cc/index.php?topic=591561.0) mentioning their use), so I was confident I could just include it. I receive these compilation errors:

```
In file included from /home/pat/.arduino15/packages/arduino/tools/arm-none-eabi-gcc/7-2017q4/arm-none-eabi/include/c++/7.2.1/memory:62:0,
from /home/pat/.../projectName.ino:1:
/home/pat/.arduino15/packages/arduino/tools/arm-none-eabi-gcc/7-2017q4/arm-none-eabi/include/c++/7.2.1/bits/stl_algobase.h:243:56: error: macro "min" passed 3 arguments, but takes just 2
min(const _Tp& __a, const _Tp& __b, _Compare __comp)
^
/home/pat/.arduino15/packages/arduino/tools/arm-none-eabi-gcc/7-2017q4/arm-none-eabi/include/c++/7.2.1/bits/stl_algobase.h:265:56: error: macro "max" passed 3 arguments, but takes just 2
max(const _Tp& __a, const _Tp& __b, _Compare __comp)
^
```

The issue can be recreated on Arduino IDE 1.8.9 and an hourly build from today, just by creating an empty sketch and putting
`#include `
at the top, and choosing MKRZero. The issue doesn't occur when picking Arduino Due.

I also apologise if I've filed this issue in the incorrect place.

Reproduce the failure with an empty MKRZero sketch containing only #include , then compare it with the Arduino Due result. Start by tracing the MKRZero core's min and max definitions against the arm-none-eabi-gcc errors; done means the minimal MKRZero sketch compiles successfully with included.

Written by the indexing model from the issue text.