gustavonihei edited a comment on pull request #4246:
URL: https://github.com/apache/incubator-nuttx/pull/4246#issuecomment-888480481


   Quoting from the Description section of standard latest version:
   
   > The behavior is undefined if the value specified by the attr argument to 
pthread_barrierattr_destroy() does not refer to an initialized barrier 
attributes object.
   
   And the update on Issue 7:
   
   > The [EINVAL] error for an uninitialized barrier attributes object is 
removed; this condition results in undefined behavior.
   
   
https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_barrierattr_destroy.html
   
   So `pthread_barrierattr_destroy` should simply return 0, which is the same 
behavior from other implementations:
   - glibc: 
https://chromium.googlesource.com/chromiumos/third_party/glibc/+/refs/heads/master/nptl/pthread_barrierattr_destroy.c
   - musl: 
http://git.musl-libc.org/cgit/musl/tree/src/thread/pthread_barrierattr_destroy.c
   
   


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