1 /* Included from 20000628-1.h.  This header is supposed to be seen
2    exactly three times.  */
3 
4 #if !defined A
5 #define A
6 int a;
7 #elif !defined B
8 #define B
9 int b;
10 #elif !defined C
11 #define C
12 int c;
13 #else
14 #error Included a fourth time
15 #endif
16