c++filt
Demangle C++ and Java symbol names
TLDR
Demangle a C++ symbol
$ c++filt [_Z1fv]
Demangle from stdin$ echo "[_Z3fooi]" | c++filt
Demangle without function parameters$ c++filt -p [symbol]
Demangle with types$ c++filt -t [symbol]
Strip leading underscore$ c++filt -_ [symbol]
Demangle dynamic symbols from ELF$ readelf -W --dyn-syms [binary] | c++filt
SYNOPSIS
c++filt [options] [symbol...]
DESCRIPTION
c++filt decodes (demangles) C++ and Java low-level symbol names into their original user-readable form. C++ compilers encode function names to handle overloading, and this tool reverses that process.Without arguments, reads symbols from stdin. Can process entire assembler source files containing mangled names.
PARAMETERS
-_, --strip-underscore
Remove initial underscore from symbols-n, --no-strip-underscore
Do not remove initial underscore-p, --no-params
Don't display function parameter types-t, --types
Demangle types as well as function names-s format, --format=format
Specify mangling format (gnu, lucid, arm, hp, edg, gnu-v3, java, gnat, dlang, rust)-r, --no-recurse-limit
Disable recursion limit (default: 2048 levels)--help
Display help--version
Display version
EXAMPLES
$ $ c++filt _Z3fooi
foo(int)
$ c++filt _ZN3Bar3bazEv
Bar::baz()
foo(int)
$ c++filt _ZN3Bar3bazEv
Bar::baz()
INSTALL
sudo apt install binutils
sudo dnf install binutils
sudo pacman -S binutils
sudo apk add binutils
sudo zypper install binutils
brew install binutils
nix profile install nixpkgs#binutils
CAVEATS
Mangled names must be complete tokens - trailing punctuation prevents demangling. Different compilers use different mangling schemes; use -s to specify format.