# gss_add_buffer_set_member(_:_:_:) Copies the contents of a buffer into a buffer set. ``` func gss_add_buffer_set_member(_ minor_status: UnsafeMutablePointer, _ member_buffer: gss_buffer_t, _ buffer_set: UnsafeMutablePointer) -> OM_uint32 ``` ## Parameters `minor_status` A pointer to the secondary status result that provides additional information in case of failure. Typically, a failure results from an inability to allocate memory, communicated with minor status . `member_buffer` The buffer to copy into the buffer set. `buffer_set` A pointer to a buffer set descriptor reference that receives a copy of the buffer. You can indicate that the buffer set doesn’t yet exist by setting its reference to [`GSS_C_NO_BUFFER_SET`](/documentation/GSS/GSS_C_NO_BUFFER_SET). In this case, the function creates it first using [`gss_create_empty_buffer_set(_:_:)`](/documentation/GSS/gss_create_empty_buffer_set(_:_:)). In any case, the buffer is added to the end of the set, and the buffer set’s `count` parameter incremented. ## Return Value A status code set to [`GSS_S_COMPLETE`](/documentation/GSS/GSS_S_COMPLETE) on success, or [`GSS_S_FAILURE`](/documentation/GSS/GSS_S_FAILURE) otherwise. Inspect the `minor_status` parameter for additional information on failure. ## Discussion The function does not add the `member_buffer` to the buffer set directly. Rather it allocates new memory for a copy of the buffer, which it includes in the buffer set. When you call [`gss_release_buffer_set(_:_:)`](/documentation/GSS/gss_release_buffer_set(_:_:)) later, you deallocate the memory for the buffer set and all of its buffer copies, but this has no effect on the original `member_buffer`. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)