*
* Copyright (C) 2008 Denys Vlasenko
*
- * Licensed under GPLv2, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2, see file LICENSE in this source tree.
*/
#include "libbb.h"
* idx step, plus one: if idx == 0x20, vector[] is resized to 0x31,
* thus last usable element is vector[0x30].
*
- * In other words: after xrealloc_vector(v, 4, idx) it's ok to use
- * at least v[idx] and v[idx+1], for all idx values.
+ * In other words: after xrealloc_vector(v, 4, idx), with any idx,
+ * it's ok to use at least v[idx] and v[idx+1].
+ * v[idx+2] etc generally are not ok.
*
* New elements are zeroed out, but only if realloc was done
* (not on every call). You can depend on v[idx] and v[idx+1] being
if (!(idx & (mask - 1))) {
sizeof_and_shift >>= 8; /* sizeof(vector[0]) */
vector = xrealloc(vector, sizeof_and_shift * (idx + mask + 1));
- vector += idx;
- memset(vector, 0, sizeof_and_shift * (mask + 1));
+ memset((char*)vector + (sizeof_and_shift * idx), 0, sizeof_and_shift * (mask + 1));
}
return vector;
}