Sig Faults for Libft cat -e output.

[mattyboiii]

Describe the bug
Please include a description of the problem as well has what operation system you are using

• OS: [ Ubuntu 22.04 LTS ...]
• The architecture of the CPU if it is not x64 (for example ARM Macs (M1, M2))
  I am also on a Virtual Machine using Virtual box :)

Additional information
You will see on the log, but i am getting random SIG errors such as these. I have already checked all of these functions I made at 42Adelaide before coming home and trying it on my VM and they already passed. Not a huge issue as I am just ignoring them, but if I didnt know any better (hadnt already passed all paco tests at 42) i would have been very confused. Thanks alot, love the application.

keep in mind,

1. they are random, sometimes I run paco toupper and its no issues, other times, the sig fault appears.
2. paco -s shows no issues for any functions :)

Test 2:
i = '0';
while (i <= '9')
{
ft_print_result(ft_isalnum(i));
i++;
}
Expected (cat -e test02.output):
1111111111
Your result (cat -e user_output_test02):

execution.log