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addr2line(1)




ADDR2LINE(1)          GNU Development Tools          ADDR2LINE(1)


NAME

     addr2line - convert addresses into file names and line
     numbers.


SYNOPSIS

     addr2line [-a|--addresses]
               [-b bfdname|--target=bfdname]
               [-C|--demangle[=style]]
               [-e filename|--exe=filename]
               [-f|--functions] [-s|--basename]
               [-i|--inlines]
               [-p|--pretty-print]
               [-j|--section=name]
               [-H|--help] [-V|--version]
               [addr addr ...]


DESCRIPTION

     addr2line translates addresses into file names and line
     numbers.  Given an address in an executable or an offset in
     a section of a relocatable object, it uses the debugging
     information to figure out which file name and line number
     are associated with it.

     The executable or relocatable object to use is specified
     with the -e option.  The default is the file a.out.  The
     section in the relocatable object to use is specified with
     the -j option.

     addr2line has two modes of operation.

     In the first, hexadecimal addresses are specified on the
     command line, and addr2line displays the file name and line
     number for each address.

     In the second, addr2line reads hexadecimal addresses from
     standard input, and prints the file name and line number for
     each address on standard output.  In this mode, addr2line
     may be used in a pipe to convert dynamically chosen
     addresses.

     The format of the output is FILENAME:LINENO.  By default
     each input address generates one line of output.

     Two options can generate additional lines before each
     FILENAME:LINENO line (in that order).

     If the -a option is used then a line with the input address
     is displayed.

     If the -f option is used, then a line with the FUNCTIONNAME
     is displayed.  This is the name of the function containing
     the address.

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ADDR2LINE(1)          GNU Development Tools          ADDR2LINE(1)

     One option can generate additional lines after the
     FILENAME:LINENO line.

     If the -i option is used and the code at the given address
     is present there because of inlining by the compiler then
     additional lines are displayed afterwards.  One or two extra
     lines (if the -f option is used) are displayed for each
     inlined function.

     Alternatively if the -p option is used then each input
     address generates a single, long, output line containing the
     address, the function name, the file name and the line
     number.  If the -i option has also been used then any
     inlined functions will be displayed in the same manner, but
     on separate lines, and prefixed by the text (inlined by).

     If the file name or function name can not be determined,
     addr2line will print two question marks in their place.  If
     the line number can not be determined, addr2line will print
     0.


OPTIONS

     The long and short forms of options, shown here as
     alternatives, are equivalent.

     -a
     --addresses
         Display the address before the function name, file and
         line number information.  The address is printed with a
         0x prefix to easily identify it.

     -b bfdname
     --target=bfdname
         Specify that the object-code format for the object files
         is bfdname.

     -C
     --demangle[=style]
         Decode (demangle) low-level symbol names into user-level
         names.  Besides removing any initial underscore
         prepended by the system, this makes C++ function names
         readable.  Different compilers have different mangling
         styles. The optional demangling style argument can be
         used to choose an appropriate demangling style for your
         compiler.

     -e filename
     --exe=filename
         Specify the name of the executable for which addresses
         should be translated.  The default file is a.out.

     -f

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ADDR2LINE(1)          GNU Development Tools          ADDR2LINE(1)

     --functions
         Display function names as well as file and line number
         information.

     -s
     --basenames
         Display only the base of each file name.

     -i
     --inlines
         If the address belongs to a function that was inlined,
         the source information for all enclosing scopes back to
         the first non-inlined function will also be printed.
         For example, if "main" inlines "callee1" which inlines
         "callee2", and address is from "callee2", the source
         information for "callee1" and "main" will also be
         printed.

     -j
     --section
         Read offsets relative to the specified section instead
         of absolute addresses.

     -p
     --pretty-print
         Make the output more human friendly: each location are
         printed on one line.  If option -i is specified, lines
         for all enclosing scopes are prefixed with (inlined by).

     @file
         Read command-line options from file.  The options read
         are inserted in place of the original @file option.  If
         file does not exist, or cannot be read, then the option
         will be treated literally, and not removed.

         Options in file are separated by whitespace.  A
         whitespace character may be included in an option by
         surrounding the entire option in either single or double
         quotes.  Any character (including a backslash) may be
         included by prefixing the character to be included with
         a backslash.  The file may itself contain additional
         @file options; any such options will be processed
         recursively.


SEE ALSO

     Info entries for binutils.


COPYRIGHT

     Copyright (c) 1991-2018 Free Software Foundation, Inc.

     Permission is granted to copy, distribute and/or modify this
     document under the terms of the GNU Free Documentation

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ADDR2LINE(1)          GNU Development Tools          ADDR2LINE(1)

     License, Version 1.3 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".

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