gcc/testsuite/gcc.misc-tests/gcov-3.c

   1 /* Test Gcov with computed gotos.
   2    This is the same as test gcc.c-torture/execute/980526-1.c */
   3
   4 /* { dg-options "-fprofile-arcs -ftest-coverage" } */
   5 /* { dg-do run { target native } } */
   6
   7 int expect_do1 = 1, expect_do2 = 2;
   8
   9 static int doit(int x){
  10   __label__ lbl1;
  11   __label__ lbl2;
  12   static int jtab_init = 0;
  13   static void *jtab[2];
  14
  15   if(!jtab_init) {
  16     jtab[0] = &&lbl1;
  17     jtab[1] = &&lbl2;
  18     jtab_init = 1;
  19   }
  20   goto *jtab[x];
  21 lbl1:
  22   return 1;
  23 lbl2:
  24   return 2;
  25 }
  26
  27 static void do1(void) {
  28   if (doit(0) != expect_do1)
  29     abort ();
  30 }
  31
  32 static void do2(void){
  33   if (doit(1) != expect_do2)
  34     abort ();
  35 }
  36
  37 int main(void){                 /* count(1) */
  38 #ifndef NO_LABEL_VALUES
  39   do1();
  40   do2();
  41 #endif
  42   exit(0);                      /* count(1) */
  43 }
  44
  45 /* { dg-final { run-gcov gcov-3.c } } */