Addr2line

addr2line shows file names and line numbers for a specified program addresses.

Example

• Have a file main.cpp:

#include <iostream>
int main()
{
  std::cout << "hello world" << std::endl;
}

• build it:

g++ main.cpp

• show it disassembled:

objdump -M intel -d a.out
[...]
00000000004007c0 <_init>:
  4007c0:       48 83 ec 08             sub    rsp,0x8
  4007c4:       e8 47 01 00 00          call   400910 <call_gmon_start>
  4007c9:       e8 d2 01 00 00          call   4009a0 <frame_dummy>    
[...]

• Now if you ask yourself from which library the call at 0x4007c0 comes, call:

# addr2line -e a.out 4007c0
/usr/src/packages/BUILD/glibc-2.9/cc-nptl/csu/crti.S:25

See also

• programming-related commands
• addr2line man page