tree d500a5d6ffd5618faa67acdadb4a5e7cd6e0fafe
parent 5bab966ca807b95ca8be32a71cc7cecc36b62106
author Ryan Prichard <rprichard@google.com> 1556140487 -0700
committer Ryan Prichard <rprichard@google.com> 1556315538 -0700

__cxa_finalize: skip fflush call on dlclose

In __cxa_finalize, only call fflush(NULL) when the program is exiting, not
when a library is unloaded with dlclose. This change restores behavior
from 2015.

Flushing output is needed when the program exits, but flushing everything
is hazardous at other times because it can block -- fflush(NULL) locks
every file, so it also blocks on read operations.

Bug: http://b/130655235
Test: manual
Change-Id: I2f5ecffa6724bfd98a93d145ab5313c793c01ae6
(cherry picked from commit c5d8c6c6e47a7f5fd0c3db2a48004be1030cf753)