segfault or abort with IT in small programs about lci HOT 8 OPEN

HAI 1.3
    I HAS A counter ITZ 0
    I HAS A number ITZ 0
    IM IN YR loop
        counter R SUM OF counter AN 1
        SUM OF 1 AN 2 
        number R SUM OF IT AN 3
        VISIBLE ":{counter}:>:{number}"
    IM OUTTA YR loop
KTHXBYE

bash-3.2$ sudo make 
Password:
Scanning dependencies of target lci
[ 10%] Building C object CMakeFiles/lci.dir/interpreter.c.o
[ 20%] Building C object CMakeFiles/lci.dir/lexer.c.o
[ 30%] Building C object CMakeFiles/lci.dir/main.c.o
[ 40%] Building C object CMakeFiles/lci.dir/parser.c.o
/Users/jhemann/Documents/lci/parser.c:2914:55: warning: use of logical '||' with constant operand [-Wconstant-logical-operand]
        if (!status) status = acceptToken(&tokens, TT_HASAN) || -1;
                                                             ^  ~~
/Users/jhemann/Documents/lci/parser.c:2914:55: note: use '|' for a bitwise operation
        if (!status) status = acceptToken(&tokens, TT_HASAN) || -1;
                                                             ^~
                                                             |
1 warning generated.
[ 50%] Building C object CMakeFiles/lci.dir/tokenizer.c.o
[ 60%] Building C object CMakeFiles/lci.dir/unicode.c.o
[ 70%] Building C object CMakeFiles/lci.dir/error.c.o
[ 80%] Building C object CMakeFiles/lci.dir/binding.c.o
/Users/jhemann/Documents/lci/binding.c:12:11: warning: using the result of an assignment as a condition without parentheses [-Wparentheses]
        while (c = input[pos]) {
               ~~^~~~~~~~~~~~
/Users/jhemann/Documents/lci/binding.c:12:11: note: place parentheses around the assignment to silence this warning
        while (c = input[pos]) {
                 ^
               (             )
/Users/jhemann/Documents/lci/binding.c:12:11: note: use '==' to turn this assignment into an equality comparison
        while (c = input[pos]) {
                 ^
                 ==
1 warning generated.
[ 90%] Building C object CMakeFiles/lci.dir/inet.c.o
[100%] Linking C executable lci
[100%] Built target lci