--format=gnu-v3
_Z1fDn
f(decltype(nullptr))
+--format=gnu-v3
+_ZN5aaaaa6bbbbbb5cccccIN23ddddddddddddddddddddddd3eeeENS2_4ffff16ggggggggggggggggENS0_9hhhhhhhhhES6_S6_S6_S6_S6_S6_S6_EE
+aaaaa::bbbbbb::ccccc<ddddddddddddddddddddddd::eee, ddddddddddddddddddddddd::ffff::gggggggggggggggg, aaaaa::bbbbbb::hhhhhhhhh, aaaaa::bbbbbb::hhhhhhhhh, aaaaa::bbbbbb::hhhhhhhhh, aaaaa::bbbbbb::hhhhhhhhh, aaaaa::bbbbbb::hhhhhhhhh, aaaaa::bbbbbb::hhhhhhhhh, aaaaa::bbbbbb::hhhhhhhhh, aaaaa::bbbbbb::hhhhhhhhh>
#
# Ada (GNAT) tests.
#