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’. 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--addressesDisplay 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=bfdnameSpecify 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. See c++filt, for more information on demangling.
-e filename--exe=filenameSpecify the name of the executable for which addresses should be translated. The default file is a.out.
-f--functionsDisplay function names as well as file and line number information.
-s--basenamesDisplay only the base of each file name.
-i--inlinesIf 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--sectionRead offsets relative to the specified section instead of absolute addresses.
-p--pretty-printMake 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)’.