SIGBUS (Misaligned Address Error) about smt

[NAThompson]

I have managed to get this pared down a bit further. First I apply the following diff:

────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
modified: setup.py
────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
@ setup.py:52 @ SMT 2.0 adds the capability to handle mixed-variable surrogate models \
and hierarchical variables.
"""

extra_compile_args = []
extra_compile_args = ['-fsanitize=address', '-fsanitize=undefined', '-g']
if not sys.platform.startswith("win"):
    extra_compile_args.append("-std=c++11")

smt/src/rmts/rmtc.cpp:172:13: runtime error: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior smt/src/rmts/rmtc.cpp:172:13 in
AddressSanitizer:DEADLYSIGNAL
=================================================================
==4233==ERROR: AddressSanitizer: BUS on unknown address (pc 0x0001586fdc6c bp 0x00016bac5530 sp 0x00016bac52b0 T0)
==4233==The signal is caused by a READ memory access.
==4233==Hint: this fault was caused by a dereference of a high value address (see register values below).  Disassemble the provided pc to learn which register was used.
   #0 0x1586fdc6c in RMTC::compute_full_from_block(double*, double*, int*, int*)+0x600 (rmtsclib.cpython-39d-darwin.so:arm64+0x15c6c)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: BUS (rmtsclib.cpython-39d-darwin.so:arm64+0x15c6c) in RMTC::compute_full_from_block(double*, double*, int*, int*)+0x600
==4233==ABORTING
fish: Job 1, './rmtc_issue.py' terminated by signal SIGABRT (Abort)

Testing the natural fix int -> long now.