GDB, how to debug macro

Question

I am debugging a huge c source code, and it has many macro definition. currently there is a segmentation fault is occurring at a macro. I want to be able to debug macro, step in macro definition just like as a function. I tried that

    ./configure debugflags="-gdwarf-2 -g3"
    make

but this is not working, make is failing. without above option it compile correctly, but could not debug macro.

so, how can I debug macro? thanks in advance

Answer 1

You could convert the macro into a static inline function, e.g. from

#define max(a, b) (a) > (b) ? (a) : (b)

to

static inline max(int a, int b)
{
    return a > b ? a : b;
}

This lets the compiler create debugging information for the macro (now function).