C++FILT

C++FILT

NAME SYNOPSIS DESCRIPTION OPTIONS FOOTNOTES SEE ALSO COPYRIGHT

NAME

c++filt - Demangle C ++ and Java symbols.

SYNOPSIS

c++filt [__-_--strip-underscores__ [__-j--java__ [__-n--no-strip-underscores__ [unrenderable node] [__--help__ [__--version__ [''symbol''...

DESCRIPTION

The C ++ and Java languages provides function overloading, which means that you can write many functions with the same name (providing each takes parameters of different types). All C ++ and Java function names are encoded into a low-level assembly label (this process is known as mangling). The c++filt [1 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

c++filt I

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 initial underscore. Whether c++filt removes the underscore by default is target dependent.

-j

--java

Prints demangled names using Java syntax. The default is to use C ++ syntax.

-n

--no-strip-underscores

Do not remove the initial underscore.

-s format

--format=format

GNU nm can decode three different methods of mangling, used by different C ++ compilers. The argument to this option selects which method it uses:

gnu

the one used by the GNU compiler (the default method)

lucid

the one used by the Lucid compiler

arm

the one specified by the C ++ Annotated Reference Manual

hp

the one used by the HP compiler

edg

the one used by the EDG compiler

gnu-new-abi

the one used by the GNU compiler with the new ABI .

--help

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

--version

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

FOOTNOTES

1.

MS-DOS does not allow + characters in file names, so on MS-DOS this program is named c++filt.

SEE ALSO

the Info entries for binutils.

COPYRIGHT

Copyright (c) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001, 2002 Free Software Foundation, Inc.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of the license is included in the section entitled `` GNU Free Documentation License''.