Use pthread_attr_destroy(3C) to remove the storage that was allocated during initialization. The attribute object becomes invalid.
int pthread_attr_destroy(pthread_attr_t *tattr);
#include <pthread.h> pthread_attr_t tattr; int ret; /* destroy an attribute */ ret = pthread_attr_destroy(&tattr);
pthread_attr_destroy() returns zero after completing successfully. Any other return value indicates that an error occurred. If the following condition occurs, the function fails and returns the corresponding value.
Indicates that the value of tattr was not valid.