1 // RUN: %clang_cc1 %s -fsyntax-only -verify -std=c89 -Wno-sizeof-array-decay 2 3 struct s { char c[17]; }; 4 extern struct s foo(void); 5 6 struct s a, b, c; 7 8 int A[sizeof((foo().c)) == 17 ? 1 : -1]; 9 int B[sizeof((a.c)) == 17 ? 1 : -1]; 10 11 12 // comma does not promote array/function in c90 unless they are lvalues. 13 int W[sizeof(0, a.c) == sizeof(char*) ? 1 : -1]; 14 int X[sizeof(0, (foo().c)) == 17 ? 1 : -1]; 15 int Y[sizeof(0, (a,b).c) == 17 ? 1 : -1]; 16 int Z[sizeof(0, (a=b).c) == 17 ? 1 : -1]; // expected-warning {{expression with side effects has no effect in an unevaluated context}} 17