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Langue: en

Version: 2005-08-12 (mandriva - 01/05/08)

Section: 1 (Commandes utilisateur)


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


c++filt [-_|--strip-underscores]
        [-s format|--format=format]
        [--help]  [--version]  [symbol...]


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 <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.


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.
Prints demangled names using Java syntax. The default is to use C++ syntax.
Do not remove the initial underscore.
When demangling the name of a function, do not display the types of the function's parameters.
-s format
c++filt can decode various methods of mangling, used by different compilers. The argument to this option selects which method it uses:
Automatic selection based on executable (the default method)
the one used by the GNU C++ compiler (g++)
the one used by the Lucid compiler (lcc)
the one specified by the C++ Annotated Reference Manual
the one used by the HP compiler (aCC)
the one used by the EDG compiler
the one used by the GNU C++ compiler (g++) with the V3 ABI.
the one used by the GNU Java compiler (gcj)
the one used by the GNU Ada compiler (GNAT).
Print a summary of the options to c++filt and exit.
Print the version number of c++filt and exit.


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


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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''.

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