Описание тега c++filt
Command-line utility to demangle C++ and Java symbols
c++filt is a command-line utility included with GNU binutils which transforms mangled C++ and Java symbol names back to the original names used in the source code.
For example, the C++ function void f() is mangled to _Z1fv according to the cross-vendor C++ Itanium ABI, so running c++filt _Z1fv prints the output f() (N.B. the return type is not part of the mangled name.)