Write the shortest program that generates the most compiler warnings and errors

GCC, score 2²⁰⁰ / 36 ≈ 4.5 × 10⁵⁸

#include __FILE__
#include __FILE__

I have not actually finished compiling this code, but based on testing and simple mathematics, it should produce a total of 2²⁰⁰ #include nested too deeply errors.

Of course, the program is trivially extensible. Adding a third line brings the score up to 3²⁰⁰ / 54 ≈ 4.9 × 10⁹³. Four lines give 4²⁰⁰ / 72 ≈ 3.6 × 10¹¹⁸, and so on.

C, 0 characters - Score=(1/0)*1=Infinity

generates 1 error:

/usr/lib/gcc/i686-pc-linux-gnu/4.7.0/../../../crt1.o: In function `_start':
(.text+0x18): undefined reference to `main'
collect2: error: ld returned 1 exit status

Note: http://ideone.com/xdoJyA

GCC, score 5586.6 (and more if needed)

179 chars, 1000003 warnings/errors (using -Wall)

#define E a,a,a,a,a,a,a,a,a,a
#define D E,E,E,E,E,E,E,E,E,E
#define C D,D,D,D,D,D,D,D,D,D
#define B C,C,C,C,C,C,C,C,C,C
#define A B,B,B,B,B,B,B,B,B,B
_(){A,A,A,A,A,A,A,A,A,A}

This can be extended arbitrarily, of course. For example, using 10 #defines instead of 5 and a length of 20 "calls" instead of 10 would lead to a score of about (20**10)/(179*4) = 14301675977.65 (and would take quite some time to run ;)