gcc/testsuite/gcc.dg/20050321-2.c

   1 /* This testcase could not assemble on ppc32, because the compiler assumed
   2    the huge ADDR_DIFF_VEC will be emitted into rodata section, yet because
   3    of some notes inserted between jump table's CODE_LABEL and the jump table
   4    it ended up in the .text section and thus shorten_branches couldn't
   5    figure out branch to lab is too far.  */
   6 /* { dg-do link { target fpic } } */
   7 /* { dg-options "-g1 -fpic" } */
   8
   9 #define A(n) \
  10   case n##1: return n##1 * 131 + 63;    \
  11   case n##3: return n##3 * 1231 + 182;  \
  12   case n##5: return n##5 * 351 + 1;     \
  13   case n##7: return n##7 * 312 + 61;    \
  14   case n##9: return n##9 * 17 - 1;
  15 #define B(n) \
  16 A(n##0) A(n##1) A(n##2) A(n##3) A(n##4) \
  17 A(n##5) A(n##6) A(n##7) A(n##8) A(n##9)
  18 #define C(n) \
  19 B(n##0) B(n##1) B(n##2) B(n##3) B(n##4) \
  20 B(n##5) B(n##6) B(n##7) B(n##8) B(n##9)
  21 #define D(n) \
  22 C(n##0) C(n##1) B(n##20) B(n##21) B(n##22)
  23
  24 int
  25 foo (int x)
  26 {
  27   {
  28 lab:;
  29     int a = x;
  30     while (a < 60000)
  31       {
  32         int b = a;
  33         {
  34           int c = b;
  35           switch (c)
  36             {
  37               D(1)
  38               default: break;
  39             }
  40         }
  41         a += 10000;
  42         if (a == 4168)
  43           goto lab;
  44       }
  45   }
  46   return x;
  47 }
  48
  49 int
  50 main (void)
  51 {
  52   foo (71);
  53   return 0;
  54 }