"undefined behaviour" in Nim's default GC is "by design" too -
[https://github.com/nim-lang/Nim/blob/devel/lib/system/gc_common.nim#L383](https://github.com/nim-lang/Nim/blob/devel/lib/system/gc_common.nim#L383)
/home/dian/.nim/lib/system/gc_common.nim:387:50: runtime error: load of
misaligned address 0x7ffc26aede64 for type 'void *', which requires 8 byte
alignment
0x7ffc26aede64: note: pointer points here
00 00 00 00 00 00 00 00 37 90 03 99 9d e6 2d 7b c0 44 40 00 00 00 00 00
d0 eb ae 26 fc 7f 00 00
^
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior
/home/dian/.nim/lib/system/gc_common.nim:387:50
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