This fails due to "u" being used in a system header.
FAIL: experimental/names.cc -std=gnu++17 (test for excess errors)
Excess errors:
/usr/include/sys/poll.h:77: error: expected unqualified-id before ';' token
/usr/include/sys/poll.h:77: error: expected ')' before ';' token
FAIL: experimental/names.cc -std=gnu++17 (test for excess errors)
Excess errors:
/usr/include/sys/poll.h:102: error: expected unqualified-id before ';' token
/usr/include/sys/poll.h:102: error: expected ')' before ';' token
libstdc++-v3/ChangeLog:
* testsuite/17_intro/names.cc [_AIX]: Undefine "u".
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