[Bug preprocessor/69391] [5/6 Regression] Incorrect __LINE__ expansion with -ftrack-macro-expansion=0 on g++5.2

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69391

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2016-01-20
                 CC|                            |jakub at gcc dot gnu.org,
                   |                            |mpolacek at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This changed behavior with r213102 aka PR61861.
Self-contained testcase:
#define STR_I(X) #X
#define STR(X) STR_I(X)
#define LINE STR(__LINE__) STR(__LINE__)
#define LINE2() STR(__LINE__) STR(__LINE__)

int main()
{
  __builtin_printf ("%s\n", LINE);
  __builtin_printf ("%s\n", LINE2 ());
  return 0;
}

I'm getting the same behavior for function-like macros like other macros
though.