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Updated: Wednesday, February 9, 2022

addr2line (1g)


addr2line - convert addresses into file names and line numbers


addr2line [-a|--addresses]
[-b bfdname|--target=bfdname]
[-e filename|--exe=filename]
[-f|--functions] [-s|--basename]
[-H|--help] [-V|--version]
[addr addr ...]


ADDR2LINE(1)                 GNU Development Tools                ADDR2LINE(1)

       addr2line - convert addresses into file names and line numbers

       addr2line [-a|--addresses]
                 [-b bfdname|--target=bfdname]
                 [-e filename|--exe=filename]
                 [-f|--functions] [-s|--basename]
                 [-H|--help] [-V|--version]
                 [addr addr ...]

       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

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

       One option can generate additional lines after the FILENAME:LINENO

       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.

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

           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
           Specify that the object-code format for the object files is

           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

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

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

           Display only the base of each file name.

           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

           Read offsets relative to the specified section instead of absolute

           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).

           Enables or disables a limit on the amount of recursion performed
           whilst demangling strings.  Since the name mangling formats allow
           for an infinite level of recursion it is possible to create strings
           whose decoding will exhaust the amount of stack space available on
           the host machine, triggering a memory fault.  The limit tries to
           prevent this from happening by restricting recursion to 2048 levels
           of nesting.

           The default is for this limit to be enabled, but disabling it may
           be necessary in order to demangle truly complicated names.  Note
           however that if the recursion limit is disabled then stack
           exhaustion is possible and any bug reports about such an event will
           be rejected.

           The -r option is a synonym for the --no-recurse-limit option.  The
           -R option is a synonym for the --recurse-limit option.

           Note this option is only effective if the -C or --demangle option
           has been enabled.

           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

           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 attributes(7) for descriptions of the following attributes:

       |Availability   | developer/gnu-binutils |
       |Stability      | Uncommitted            |

       Info entries for binutils.

       Copyright (c) 1991-2021 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 1.3 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".

       Source code for open source software components in Oracle Solaris can
       be found at https://www.oracle.com/downloads/opensource/solaris-source-

       This software was built from source available at
       https://github.com/oracle/solaris-userland.  The original community
       source was downloaded from

       Further information about this software can be found on the open source
       community website at https://www.gnu.org/software/binutils.

binutils-2.36.1                   2021-02-06                      ADDR2LINE(1)