1*67e74705SXin Li // Assorted macros to help test #include behavior across file boundaries. 2*67e74705SXin Li 3*67e74705SXin Li #define helper1 0 4*67e74705SXin Li 5*67e74705SXin Li void helper2(const char *, ...); 6*67e74705SXin Li 7*67e74705SXin Li #define M1(a, ...) helper2(a, ##__VA_ARGS__); 8*67e74705SXin Li 9*67e74705SXin Li // Note: M2 stresses vararg macro functions with macro arguments. The spelling 10*67e74705SXin Li // locations of the args used to be set to the expansion site, leading to 11*67e74705SXin Li // crashes (region LineEnd < LineStart). The regression test requires M2's line 12*67e74705SXin Li // number to be greater than the line number containing the expansion. 13*67e74705SXin Li #define M2(a, ...) M1(a, helper1, ##__VA_ARGS__); 14