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Inside my C program I'm getting function call stack by using backtrace and then function names by backtrace_symbols, using output of backtrace. The resulting strings contain function names and addresses of call initiating code, withing the function. Is there a way to convert those addresses into file names and line numbers? I mean by using C library (Linux only will work) of gcc extensions. Thanks in advance!

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    C or C++? Choose a tag.
    – too honest for this site
    Commented Jun 4, 2015 at 2:18
  • What do you actually want? C has no backtrace statement. You're talking about debugging? These are two different things.
    – too honest for this site
    Commented Jun 4, 2015 at 2:19
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    Use libbacktrace. Here's the example from their repo.
    – Pradhan
    Commented Jun 4, 2015 at 2:26
  • OP's presumably refering to this API....
    – Tony Delroy
    Commented Jun 4, 2015 at 2:28
  • I've written a small util which translates addresses to files, lines and functions. It's based on addr2line. github.com/EmilOhlsson/call-trace
    – Kotte
    Commented Nov 11, 2017 at 22:42

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Outside of an application, you can convert an address to a source file name and line number using the addr2line utility. (This utility is Linux-specific; Mac OS X has the similar atos utility.)

Within an application, you can use the dladdr function to resolve an address to a shared object and symbol name. I'm not aware of any way to access debug information to get a line number within an application, though.

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  • I have a gist where I explain the process of getting the source code line number from an address (say, in a crash backtrace). Hope it helps.
    – J C Gonzalez
    Commented Jul 10, 2019 at 6:09

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