avr-c++filt (1)


       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 depen-

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

           Do not remove the initial underscore.

       -s format
           c++filt  can  decode various methods of mangling, used by different
           compilers.  The argument to this option  selects  which  method  it

               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.


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


       the Info entries for binutils.


       Copyright (c) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000,  2001,  2002,
       2003 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''.

3rd Berkeley Distribution       binutils-030512                     C++FILT(1)