gcc/testsuite/c-c++-common/unroll-5.c

   1 /* { dg-do compile } */
   2
   3 extern void bar (int);
   4
   5 int j;
   6
   7 void test (void)
   8 {
   9   #pragma GCC unroll 4+4
  10   for (unsigned long i = 1; i <= 8; ++i)
  11     bar(i);
  12
  13   #pragma GCC unroll -1 /* { dg-error "requires an assignment-expression that evaluates to a non-negative integral constant less than" } */
  14   for (unsigned long i = 1; i <= 8; ++i)
  15     bar(i);
  16
  17   #pragma GCC unroll 20000000000        /* { dg-error "requires an assignment-expression that evaluates to a non-negative integral constant less than" } */
  18   for (unsigned long i = 1; i <= 8; ++i)
  19     bar(i);
  20
  21   #pragma GCC unroll j  /* { dg-error "requires an assignment-expression that evaluates to a non-negative integral constant less than" } */
  22                         /* { dg-error "cannot appear in a constant-expression|is not usable in a constant expression" "" { target c++ } .-1 } */
  23   for (unsigned long i = 1; i <= 8; ++i)
  24     bar(i);
  25
  26   #pragma GCC unroll  4.2       /* { dg-error "requires an assignment-expression that evaluates to a non-negative integral constant less than" } */
  27   for (unsigned long i = 1; i <= 8; ++i)
  28     bar(i);
  29 }