gcc/testsuite/c-c++-common/warn-ommitted-condop.c

   1 /* { dg-options "-Wparentheses -ftrack-macro-expansion=0" } */
   2
   3 #ifndef __cplusplus
   4 #define bool _Bool
   5 #endif
   6
   7 extern void f2 (int);
   8
   9 void bar (int x, int y, int z, bool b)
  10 {
  11 #define T(op) f2 (x op y ? : 1)
  12 #define T2(op) f2 (x op y ? 2 : 1)
  13
  14   T(<); /* { dg-warning "omitted middle operand" } */
  15   T(>); /* { dg-warning "omitted middle operand" } */
  16   T(<=); /* { dg-warning "omitted middle operand" } */
  17   T(>=); /* { dg-warning "omitted middle operand" } */
  18   T(==); /* { dg-warning "omitted middle operand" } */
  19   T(!=); /* { dg-warning "omitted middle operand" } */
  20   T(||); /* { dg-warning "omitted middle operand" } */
  21   T(&&); /* { dg-warning "omitted middle operand" } */
  22   f2 (!x ? : 1);  /* { dg-warning "omitted middle operand" } */
  23   f2 ((x,!x) ? : 1);  /* { dg-warning "omitted middle operand" } */
  24   f2 ((x,y,!x) ? : 1);  /* { dg-warning "omitted middle operand" } */
  25   T2(<); /* { dg-bogus "omitted middle operand" } */
  26   T2(>); /* { dg-bogus "omitted middle operand" } */
  27   T2(==); /* { dg-bogus "omitted middle operand" } */
  28   T2(||); /* { dg-bogus "omitted middle operand" } */
  29   T2(&&); /* { dg-bogus "omitted middle operand" } */
  30   T(+); /* { dg-bogus "omitted middle operand" } */
  31   T(-); /* { dg-bogus "omitted middle operand" } */
  32   T(*); /* { dg-bogus "omitted middle operand" } */
  33   T(/); /* { dg-bogus "omitted middle operand" } */
  34   T(^); /* { dg-bogus "omitted middle operand" } */
  35   f2 (b ? : 1);  /* { dg-warning "omitted middle operand" } */
  36 }