diff options
| -rw-r--r-- | buffer.c | 6 |
1 files changed, 5 insertions, 1 deletions
@@ -70,9 +70,13 @@ bool buffer_remove(Buffer *buf, size_t pos, size_t len) { bool buffer_insert(Buffer *buf, size_t pos, const void *data, size_t len) { if (pos > buf->len) return false; + if (len == 0) + return true; if (!buffer_grow(buf, buf->len + len)) return false; - memmove(buf->data + pos + len, buf->data + pos, buf->len - pos); + size_t move = buf->len - pos; + if (move > 0) + memmove(buf->data + pos + len, buf->data + pos, move); memcpy(buf->data + pos, data, len); buf->len += len; return true; |