NAME
cxxfilt - Demangle C++ and Java symbols.
SYNOPSIS
c++filt [
-_ï ­­strip­underscores]
[
-jï ­­java]
[
-nï ­­no­strip­underscores]
[
-s formatï ­­format=format]
[
­­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 low­level assembly label (this process is
known as
mangling). The c++filt [1] program does the inverse mapping: it decodes
(
demangles) low­level names into user­level 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 low­level name in the output.
You can use
c++filt to decipher individual symbols:
c++filt I<symbol>
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
-_
­­strip­underscores
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 low­level 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
­­no­strip­underscores
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:
the one used by the
GNU compiler (the default method) the one used by the Lucid
compiler the one specified by the C++ Annotated Reference Manual the one used by the
HP compiler the one used by the EDG compiler 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.
MS­DOS does not allow + characters in file names, so on MS­DOS this program is named
cxxfilt
.
SEE ALSO
the Info entries for
binutils.
COPYRIGHT
Copyright (c) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001 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 Front­Cover Texts, and with no
Back­Cover Texts. A copy of the license is included in the section entitled ``
GNU Free
Documentation License''.