LGTM was complaining:
> Multiplication result may overflow 'int' before it is converted to 'long'.
Fix this by changing all types to ssize_t and add a check for overflow
while at it.
_cleanup_free_ char *x = NULL;
char *t, *s;
- ssize_t slen, len, avail;
- int line, lines;
+ ssize_t len, slen, avail, line, lines;
len = base64mem(p, l, &x);
if (len <= 0)
lines = DIV_ROUND_UP(len, width);
slen = strlen_ptr(sep);
+ if (lines > (SSIZE_MAX - plen - 1 - slen) / (indent + width + 1))
+ return -ENOMEM;
+
t = realloc(*prefix, plen + 1 + slen + (indent + width + 1) * lines);
if (!t)
return -ENOMEM;