Section: GNU Development Tools (1)
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c++filt - Demangle C++ and Java symbols.
[--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
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:
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++
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 c++filt.
the Info entries for binutils.
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2000, 2001, 2002, 2003, 2004 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''.
- SEE ALSO
This document was created by
using the manual pages.
Time: 23:03:51 GMT, June 17, 2008