gcc/testsuite/gcc.dg/tree-ssa/pr84969.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -ftree-loop-distribute-patterns" } */
   3
   4 static void
   5 __attribute__((noipa, noinline))
   6 foo (char **values, int ndim, char *needquotes, int *dims)
   7 {
   8   int i;
   9   int j = 0;
  10   int k = 0;
  11   char *retval = (char *)__builtin_malloc(1000);
  12   char *p = retval;
  13   char *tmp;
  14
  15   int indx[111];
  16
  17 #define APPENDSTR(str)  (__builtin_strcpy(p, (str)), p += __builtin_strlen(p))
  18 #define APPENDCHAR(ch)  (*p++ = (ch), *p = '\0')
  19
  20         APPENDCHAR('{');
  21         for (i = 0; i < ndim; i++)
  22                 indx[i] = 0;
  23         do
  24         {
  25                 for (i = j; i < ndim - 1; i++)
  26                         APPENDCHAR('{');
  27
  28                         APPENDSTR(values[k]);
  29                 k++;
  30
  31                 for (i = ndim - 1; i >= 0; i--)
  32                 {
  33                         indx[i] = (indx[i] + 1) % dims[i];
  34                         if (indx[i])
  35                         {
  36                                 APPENDCHAR(',');
  37                                 break;
  38                         }
  39                         else
  40                                 APPENDCHAR('}');
  41                 }
  42                 j = i;
  43         } while (j != -1);
  44
  45         if (__builtin_strcmp (retval, "{{{0,1},{2,3}}}") != 0)
  46           __builtin_abort ();
  47 }
  48
  49 int main()
  50 {
  51   char* array[4] = {"0", "1", "2", "3"};
  52   char f[] = {0, 0, 0, 0, 0, 0, 0, 0};
  53   int dims[] = {1, 2, 2};
  54   foo (array, 3, f, dims);
  55
  56   return 0;
  57 }