linux - How to map a function name and line number by a memory address in C language? -

how can map function name , line number memory address in gcc ?

i.e assuming prototype in c language:

void func() {   // address of caller , maybe avoided   memoryaddress = get_call_address();    // line source code executing , calls func()   linenumber = get_lineno_from_symbol ( &memoryaddress );    // grab name calls func()   functionname = get_func_from_symbol ( &memoryaddress ); } 

so there existing apis provided gcc or whatever , can meet requirements ?

many of response ;-p

if include header

#include <execinfo.h> 

then can use backtrace() function determine address of calling line, , backtrace_symbols() retrieve names of functions. however, not give line numbers (though may give enough information debugging, if require).

if absolutely need line numbers, you'll need to:

• ensure program (and libraries) compiled debugging enabled (-g flag gcc)
• use addr2line program translate addresses (retrieved backtrace()) file/line number references. can call program using system(), example. send output stdout, can use redirection or pipe capture output if required.