[Bug c++/70182] c++filt fails to demangle symbol

[gdutor at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70182

Fenglin Hou <gdutor at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |gdutor at gmail dot com

--- Comment #16 from Fenglin Hou <gdutor at gmail dot com> ---
FYI.

```
$ c++filt --version
GNU c++filt version 2.31.1-29.fc30
Copyright (C) 2018 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) any later version.
This program has absolutely no warranty.

$ c++filt
_ZZZN6nebula4meta11AdminClient11getResponseINS_7storage4cpp215MemberChangeReqEZNS1_12memberChangeEiiRKSt4pairIiiEbE3$_7EEvSt6vectorIS7_SaIS7_EEiT_T0_iN5folly7PromiseINS_6StatusEEEiENUlvE_clEvENUlONSG_3TryINS4_13AdminExecRespEEEE_clESO_
_ZZZN6nebula4meta11AdminClient11getResponseINS_7storage4cpp215MemberChangeReqEZNS1_12memberChangeEiiRKSt4pairIiiEbE3
```