Segfault using libunwind on aarch64

[MoBaT]

This library is working wonderfully when using x86_64 using libunwind (v1.6-stable), however, when I try to throw an exception on an aarch64 device, then I get a segfault inside the class StackTraceImpl, load_here function on unw_step.

This is my main:

• Ubuntu 18.04
• aarch64 (tegra xavier)
• gcc version 7.5.0 (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04)