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File: binutils.info,  Node: addr2line,  Next: nlmconv,  Prev: c++filt,  Up: Top
10 addr2line
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     addr2line [-a|--addresses]
               [-b BFDNAME|--target=BFDNAME]
               [-C|--demangle[=STYLE]]
               [-r|--no-recurse-limit]
               [-R|--recurse-limit]
               [-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'.  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.
   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.
   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.  *Note c++filt::, for more information on demangling.
'-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.
'-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)'.
'-r'
'-R'
'--recurse-limit'
'--no-recurse-limit'
'--recursion-limit'
'--no-recursion-limit'
     Enables or disables a limit on the amount of recursion performed
     whilst demangling strings.  Since the name mangling formats allow
     for an inifinite 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 1024 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.