c++filt

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
SEE ALSO
COPYING

NAME

c++filt − demangle C++ symbols

SYNOPSIS

c++filt

[−_|−−strip-underscores] [−s {gnu,lucid,arm} | −−format={gnu,lucid,arm}] [−−help] [−−version] [symbol...]

DESCRIPTION

The C++ language provides function overloading, which means that you can write many functions with the same name (providing each takes parameters of different types). All C++ function names are encoded into a low-level assembly label (this process is known as mangling). The c++filt program does the inverse mapping: it decodes (demangles) low-level names into user-level names so that the linker can keep these overloaded functions from clashing.

Every alphanumeric word (consisting of letters, digits, underscores, dollars, or periods) seen in the input is a potential label. If the label decodes into a C++ name, the C++ name replaces the low-level name in the output.

You can use c++filt to decipher individual symbols by specifying these symbols on the command line.

If no symbol arguments are given, c++filt reads symbol names from the standard input and writes the demangled names to the standard output. All results are printed on the standard output.

OPTIONS

−_

−−strip−underscores

On some systems, both the C and C++ compilers put an underscore in front of every name. For example, the C name foo gets the low-level name _foo. This option removes the leading underscore.

−s {gnu,lucid,arm}

−−format={gnu,lucid,arm}

GNU nm can decode three different methods of mangling, used by different C++ compilers. This option selects which method it uses: the one used by the GNU compiler, the one used by the Lucid compiler, or the one specified by the C++ Annotated Reference Manual. The default is the GNU style.

−−help

Print a summary of the options to c++filt and exit.

−−version

Print the version number of c++filt and exit.

SEE ALSO

binutils’ entry in info; The GNU Binary Utilities, Roland H. Pesch (June 1993).

COPYING

Copyright (c) 1993 Free Software Foundation, Inc.

Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies.

Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one.

Permission is granted to copy and distribute translations of this manual into another language, under the above conditions for modified versions, except that this permission notice may be included in translations approved by the Free Software Foundation instead of in the original English.