gcc/testsuite/gcc.misc-tests/gcov-7.c

   1 /* Check that gcov correctly reports line counts, branch percentages,
   2  * and call return percentages for functions that call longjmp. */
   3
   4 /* { dg-options "-fprofile-arcs -ftest-coverage" } */
   5 /* { dg-do run { target native } } */
   6
   7 #include <setjmp.h>
   8
   9 jmp_buf env;
  10 int val;
  11 int longjmp_taken;
  12 int bar_enter, bar_exit;
  13 int foo_enter, foo_exit;
  14
  15 void bar (int i)
  16 {
  17   bar_enter++;                          /* count(3) */
  18                                         /* branch(67) */
  19   if (i == 0) {
  20                                         /* branch(end) */
  21       longjmp_taken++;                  /* count(1) */
  22       longjmp (env, 1);
  23     }
  24   val += i+1;
  25   bar_exit++;                           /* count(2) */
  26 }
  27
  28 void foo (int i)
  29 {
  30   foo_enter++;                          /* count(3) */
  31                                         /* branch(67) */
  32   if (i == 1) {
  33                                         /* branch(end) */
  34       longjmp_taken++;                  /* count(1) */
  35       longjmp (env, 2);
  36     }
  37                                         /* returns(50) */
  38   bar (i);                              /* count(2) */
  39                                         /* returns(100) */
  40   bar (7);                              /* count(1) */
  41                                         /* returns(end) */
  42   val += 16;
  43   foo_exit++;                           /* count(1) */
  44 }
  45
  46 int
  47 passed ()
  48 {
  49   return (val == 31 &&
  50           longjmp_taken == 2 &&
  51           foo_enter == 3 &&
  52           foo_exit == 1 &&
  53           bar_enter == 3 &&
  54           bar_exit == 2);
  55
  56 }
  57
  58 void
  59 leave (int i)
  60 {
  61   if (i == 0) {
  62       abort ();
  63     }
  64   exit (0);
  65 }
  66
  67 int
  68 main()
  69 {
  70   int retval;
  71
  72                                         /* branch(33) */
  73   if ((retval = setjmp (env))) {
  74                                         /* branch(end) */
  75       val += retval;                    /* count(2) */
  76     }
  77                                         /* returns(33) */
  78   foo (val);                            /* count(3) */
  79                                         /* returns(0) */
  80   leave (passed());                     /* count(1) */
  81                                         /* returns(end) */
  82 }
  83
  84 /* { dg-final { run-gcov -b gcov-7.c } } */