Reinitialize this stream buffer to use the specified character buffer having the specified length. Return the pointer providing modifiable access to this stream buffer. The behavior is undefined unless `buffer != 0 && length > 0 or length == 0`. Upon re-initialization for use of the new buffer, neither the content nor the next input position indicator are preserved. Note that buffer is held but not owned.
Declared in <bdlsb_fixedmeminstreambuf.h>
FixedMemInStreamBuf*
setbuf(
char const* buffer,
std::streamsize length);