clang/test/C/C11/n1282.c

   1 // RUN: %clang_cc1 -verify -Wunsequenced -Wno-unused-value %s
   2
   3 /* WG14 N1282: Yes
   4  * Clarification of Expressions
   5  */
   6
   7 int g;
   8
   9 int f(int i) {
  10   g = i;
  11   return 0;
  12 }
  13
  14 int main(void) {
  15   int x;
  16   x = (10, g = 1, 20) + (30, g = 2, 40); /* Line A */ // expected-warning {{multiple unsequenced modifications to 'g'}}
  17   x = (10, f(1), 20) + (30, f(2), 40); /* Line B */
  18   x = (g = 1) + (g = 2); /* Line C */                 // expected-warning {{multiple unsequenced modifications to 'g'}}
  19   return 0;
  20 }