addr2line [-b bfdname|--target=bfdname] [-C|--demangle[=style]] [-e filename|--exe=filename] [-f|--functions] [-s|--basename] [-i|--inlines] [-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 address is printed on a separate line. If the -f option is used, then each FILENAME:LINENO line is preceded by a FUNCTIONNAME line which is the name of the function containing the address.
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.
- -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 compiler. See c++filt,
for more information on demangling.
- -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
callee2, and address is from
callee2, the source information for
mainwill also be printed.
- Read offsets relative to the specified section instead of absolute addresses.