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 extern void abort (void);
   8 extern void exit (int);
   9
  10 int expect_do1 = 1, expect_do2 = 2;
  11
  12 static int doit(int x){
  13   __label__ lbl1;
  14   __label__ lbl2;
  15   static int jtab_init = 0;
  16   static void *jtab[2];
  17
  18   if(!jtab_init) {
  19     jtab[0] = &&lbl1;
  20     jtab[1] = &&lbl2;
  21     jtab_init = 1;
  22   }
  23   goto *jtab[x];
  24 lbl1:
  25   return 1;
  26 lbl2:
  27   return 2;
  28 }
  29
  30 static void do1(void) {
  31   if (doit(0) != expect_do1)
  32     abort ();
  33 }
  34
  35 static void do2(void){
  36   if (doit(1) != expect_do2)
  37     abort ();
  38 }
  39
  40 int main(void){                 /* count(1) */
  41 #ifndef NO_LABEL_VALUES
  42   do1();
  43   do2();
  44 #endif
  45   exit(0);                      /* count(1) */
  46 }
  47
  48 /* { dg-final { run-gcov gcov-3.c } } */