[New LWP 22267]
Core was generated by `./a.out'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00005583c87ee252 in _hash (hash_table=0x7ffd4f5b1910, HASH_TABLE_SIZE=0x100000, val=0x891ff76, find_empty=0x1, collision_count=@0x7ffd4f5b1880: 0x4000) at double.cpp:16
16      while (hash_table[(index = (h1 + (collision_count * h2)) % HASH_TABLE_SIZE)] != val_to_find)
gdb-peda$ info locals
h1 = 0x1ff76
h2 = 0x20000
val_to_find = 0x0
index = 0xfff1ff76
gdb-peda$ info args
hash_table = 0x7ffd4f5b1910
HASH_TABLE_SIZE = 0x100000
val = 0x891ff76
find_empty = 0x1
collision_count = @0x7ffd4f5b1880: 0x4000