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perry |
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C++FILT |
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!!!C++FILT |
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NAME |
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SYNOPSIS |
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DESCRIPTION |
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OPTIONS |
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FOOTNOTES |
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SEE ALSO |
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COPYRIGHT |
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---- |
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!!NAME |
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c++filt - Demangle C ++ and Java symbols. |
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!!SYNOPSIS |
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c++filt [[__-_--strip-underscores__] [[__-j--java__] |
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[[__-n--no-strip-underscores__] [[__-s__ |
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''format''__--format=__''format''] [[__--help__] |
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[[__--version__] [[''symbol''...] |
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!!DESCRIPTION |
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The C ++ and Java languages provides function |
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overloading, which means that you can write many functions |
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with the same name (providing each takes parameters of |
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different types). All C ++ and Java function |
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names are encoded into a low-level assembly label (this |
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process is known as ''mangling''). The __c++filt__ [[1] |
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program does the inverse mapping: it decodes |
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(''demangles'') low-level names into user-level names so |
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that the linker can keep these overloaded functions from |
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clashing. |
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Every alphanumeric word (consisting of letters, digits, |
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underscores, dollars, or periods) seen in the input is a |
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potential label. If the label decodes into a C |
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++ name, the C ++ name |
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replaces the low-level name in the output. |
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You can use __c++filt__ to decipher individual |
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symbols: |
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c++filt I |
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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. |
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!!OPTIONS |
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__-___ |
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__--strip-underscores__ |
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On some systems, both the C and C ++ |
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compilers put an underscore in front of every name. For |
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example, the C name foo gets the low-level name |
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_foo. This option removes the initial underscore. |
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Whether __c++filt__ removes the underscore by default is |
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target dependent. |
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__-j__ |
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__--java__ |
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Prints demangled names using Java syntax. The default is to |
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use C ++ syntax. |
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__-n__ |
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__--no-strip-underscores__ |
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Do not remove the initial underscore. |
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__-s__ ''format'' |
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__--format=__''format'' |
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GNU __nm__ can decode three different |
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methods of mangling, used by different C ++ |
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compilers. The argument to this option selects which method |
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it uses: |
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gnu |
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the one used by the GNU compiler (the default |
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method) |
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lucid |
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the one used by the Lucid compiler |
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arm |
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the one specified by the C ++ Annotated |
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Reference Manual |
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hp |
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the one used by the HP compiler |
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edg |
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the one used by the EDG compiler |
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gnu-new-abi |
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the one used by the GNU compiler with the new |
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ABI . |
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__--help__ |
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Print a summary of the options to __c++filt__ and |
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exit. |
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__--version__ |
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Print the version number of __c++filt__ and |
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exit. |
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!!FOOTNOTES |
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1. |
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MS-DOS does not allow + characters in file names, |
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so on MS-DOS this program is named |
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__c++filt__. |
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!!SEE ALSO |
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the Info entries for ''binutils''. |
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!!COPYRIGHT |
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Copyright (c) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000, |
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2001, 2002 Free Software Foundation, Inc. |
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Permission is granted to copy, distribute and/or modify this |
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document under the terms of the GNU Free |
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Documentation License, Version 1.1 or any later version |
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published by the Free Software Foundation; with no Invariant |
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Sections, with no Front-Cover Texts, and with no Back-Cover |
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Texts. A copy of the license is included in the section |
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entitled `` GNU Free Documentation |
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License''. |
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---- |