addr2line






addr2line − convert addresses into file names and line
numbers.

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 ...]

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.  The file
name and line number for each input address is printed on
separate lines.

     If the −f option is used, then each FILENAME:LINENO
line is preceded by FUNCTIONNAME which is the name of the
function containing the address.

     If the −i option is used and the code at the given
address is present there because of inlining by the compiler
then the {FUNCTIONNAME} FILENAME:LINENO information for the
inlining function will be displayed afterwards.  This
continues recursively until there is no more inlining to
report.

     If the −a option is used then the output is prefixed by
the input address.









                             ‐2‐


     If the −p option is used then the output for each input
address is displayed on one, possibly quite long, line.  If
−p is not used then the output is broken up into multiple
lines, based on the paragraphs above.

     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 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

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

−s

−−basenames
    Display only the base of each file name.










                             ‐3‐


−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.

Info entries for binutils.

Copyright (c) 1991, 1992, 1993, 1994, 1995, 1996, 1997,
1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
2008, 2009, 2010, 2011, 2012 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".