1/* { dg-do preprocess } */ 2/* { dg-options "-ftrack-macro-expansion=2" } */ 3 4int foo(int, ...); 5 6#define a(x, y...) foo(x, ##y) 7a(1) 8a(1, 2, 3) 9#define b(x, y, z...) foo(x, ##y) /* { dg-error "valid preprocessing token" } */ 10b(1, 2, 3) 11#define c(x, y, z...) foo(x, ##z) 12c(1, 2) 13c(1, 2, 3) 14#define d(x) fo(##x) /* { dg-error "valid preprocessing token" } */ 15d(1) 16