erealloc
bp->buffer = erealloc(bp->buffer, size);
extern void *erealloc(void *, size_t);
buffer = erealloc(buffer, bufsize);
newbuf = erealloc(dbuf->buf, dbuf->size + DIRBLKSIZ);
n = erealloc(bp->b_data, (size_t)size);
void *erealloc(void *, size_t);
buf->s_str = erealloc(buf->s_str, buf->s_len +
buf = erealloc(buf, len + s + 1);
void *erealloc(void *, size_t);
fullname = erealloc(fullname, len);