+2007-03-16 Charles Wilson <cygwin@...>
+
+ * libc/argz/argz_insert.c: "before" pointer is
+ invalid after *argz realloc. Compute offset
+ between "before" and *argz, and use it after
+ reallocation instead.
+
2007-03-16 Eric Blake <ebb9@byu.net>
* libc/stdio64/fseek064.c (_fseeko64_r): Fix reentrancy.
while (before != *argz && before[-1])
before--;
+ /* delta will always be non-negative, and < *argz_len */
+ ptrdiff_t delta = before - *argz;
+
len = strlen(entry) + 1;
if(!(*argz = (char *)realloc(*argz, *argz_len + len)))
return ENOMEM;
- memmove(before + len, before, *argz + *argz_len - before);
- memcpy(before, entry, len);
+ memmove(*argz + delta + len, *argz + delta, *argz_len - delta);
+ memcpy(*argz + delta, entry, len);
*argz_len += len;