Broken calloc implementation

[ZeroIntensity]

it seems my initial guess of why calloc caused so many segfaults was wrong.

example:

from pointers import calloc, free

mem = calloc(200, 28)
mem += 200
mem <<= 1
mem -= 200
print(~mem)  # works just fine!

free(mem)

mem_2 = calloc(4, 28)
mem_2 += 1
mem_2 <<= 1
mem_2 -= 1
print(*mem_2)  # segfault

it seems that i need to skip 24 digits when using pointer arithmetic, not 1.

mem = calloc(200, 28)
mem += 24
mem <<= 1
mem -= 24
print(~mem)  # works correctly, no segfault

another example:

mem = calloc(200, 28)
mem += 23
mem <<= 1
mem -= 23
print(~mem)  # OverflowError