1
0:2(9): preprocessor error: Redefinition of macro x
3
0:5(9): preprocessor error: Redefinition of macro abc
5
0:8(9): preprocessor error: Redefinition of macro foo
7
0:11(9): preprocessor error: Redefinition of macro bar
9
0:14(9): preprocessor error: Redefinition of macro biff
11
0:17(9): preprocessor error: Redefinition of macro oper