  10. addr2line  addr2line [`-b' bfdname|`--target='bfdname]
[`-e' filename|`--exe='filename]           [`-f'|`--functions']
[`-s'|`--basename']           [`-H'|`--help'] [`-V'|`--version']
[addr addr ...]  addr2line translates program addresses into
file names and line numbers. Given an address and an executable,
it uses the debugging information in the executable to figure
out which file name and line number are associated with a given
address.  The executable to use is specified with the `-e'
option. The default is the file `a.out'.  addr2line has two
modes of operation.       -b bfdname  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. See section 9. c++filt, for more information on
demangling.  -e filename