arduino - Memory leak into integer C++ -

i've added new function code , integer used gets affected sort of memory overrun. (note concerning .ino sketch arduino uno)

instead of decrementing 1 xpos--; decrements 256 (if remove printtext function overrun doesn't happen).

the integer xpos , char buffer defined with

int xpos = 0; char buffer[26]; 

just under includes. u8g.drawstr function draws string on display , takes 2 ints x , y , char* string arguments.

void printtext(const char* inputtext) {     int y = ypos;     (int = strlen(inputtext); > 0; -= 25)     {         strncpy(buffer, &inputtext[strlen(inputtext) - i], >= 25 ? 25 : i);         buffer[26] = '\0';         u8g.drawstr(0, y, buffer);         y += 8;     } } 

any council appreciated :)

your buffer has 26 slots:

    char buffer[26]; 

yet try write 27th slot:

    buffer[26] = '\0'; 

that's not going work. (zero first slot, 1 second slot, , on. 26 27th slot.)