# C++ filter

The C++ filter utility translates encoded C++ symbol names to human-readable form. This utility can be used in two ways:

- As a filter—reading encoded names from the standard input, and writing the translated names to the standard output.
- As a command-line translator—reading the encoded names that are passed as command arguments, and writing the translated names to the standard output.

Note

This utility returns zero on success, or greater than zero if an error occurs.

## Command

To start the C++ filter utility from the command line:

hexagon-c++filt [<option...>] [<encoded-names...>]
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Where `<option>` is one or more of the following:

--format=<value>
    -help  |  -help-hidden
    -strip-underscore
    -types
    -version
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## Options

--format=<value>
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Select a decoration style. The possible values are:

- `auto` - Automatically detect the style
- `gnu` - GNU (itanium) style

-help
    -help-hidden
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Display the command usage information and available options. Use `-help-hidden` to display more options.

-strip-underscore
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Strip the leading underscore.

-types
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Attempt to demangle types as well as function names.

-version
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Display the version of this program.

Last Published: Oct 06, 2026

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