---
name: "sparc-c++filt"
section: "1"
platform: "linux"
package: "binutils-sparc"
version: "2.11.92.0.12.3-4"
release: "Debian 3.0 (Woody)"
platforms: ["linux"]
url: "https://new.carta.tech/sparc-c++filt"
---

# sparc-c++filt(1)

Demangle C++ and Java symbols.

## NAME

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

## SYNOPSIS

c++filt \[**-\_**⎪**--strip-underscores**\]\
         \[**-j**⎪**--java**\]\
         \[**-n**⎪**--no-strip-underscores**\]\
         \[**-s** *format*⎪**--format=***format*\]\
         \[**--help**\]  \[**--version**\]  \[*symbol*...\]

## 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 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<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

- **-\_**

  - **--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 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".