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

   1 /* { dg-do run { target native } } */
   2 /* { dg-require-effective-target label_values } */
   3
   4 /* Test Gcov with computed gotos.
   5    This is the same as test gcc.c-torture/execute/980526-1.c */
   6
   7 /* { dg-options "-fprofile-arcs -ftest-coverage" } */
   8
   9 extern void abort (void);
  10 extern void exit (int);
  11
  12 int expect_do1 = 1, expect_do2 = 2;
  13
  14 static int doit(int x){
  15   __label__ lbl1;
  16   __label__ lbl2;
  17   static int jtab_init = 0;
  18   static void *jtab[2];
  19
  20   if(!jtab_init) {
  21     jtab[0] = &&lbl1;
  22     jtab[1] = &&lbl2;
  23     jtab_init = 1;
  24   }
  25   goto *jtab[x];
  26 lbl1:
  27   return 1;
  28 lbl2:
  29   return 2;
  30 }
  31
  32 static void do1(void) {
  33   if (doit(0) != expect_do1)
  34     abort ();
  35 }
  36
  37 static void do2(void){
  38   if (doit(1) != expect_do2)
  39     abort ();
  40 }
  41
  42 int main(void){                 /* count(1) */
  43   do1();
  44   do2();
  45   exit(0);                      /* count(1) */
  46 }
  47
  48 /* { dg-final { run-gcov gcov-3.c } } */