blah.c:

  void foo(item *x)
  {
      x->blah(1, 2, 3);
      x->blah (4, 5,
            6);
      blah (7, 5, 1);
      foo (4, 5, 6);
      x->blah (4,
            5, 6);
  }
  
  
  void foo2(item y, item *x)
  {
      y.blah(1, 2, 3);
      y.blah (4, 5,
            6);
      blah (7, 5, 1);
      foo (4, 5, 6);
      x->blah (4,
            5, 6);
  }

search in blah.c for a call to blah() with 5 as 2nd argument from any structure or pointer.

  cgrep --code --semantic '_1 . OR -> blah ( _2 , 5, _3 )' blah.c 

output:

  blah.c:6:    x->blah (4, 5,
  blah.c:7:          6);
  blah.c:10:    x->blah (4,
  blah.c:11:          5, 6);
  blah.c:18:    y.blah (4, 5,
  blah.c:19:          6);
  blah.c:22:    x->blah (4,
  blah.c:23:          5, 6);