When the grade_get_course_grades() function is called on a newly created course that has students but no activity, the function calls grade_regrade_final_grades($courseid); to initialize the grade item but does not store the initialized object and returns a badly constructed one instead
 
Exemples : 

• Return value without storing the constructed object from grade_regrade_final_grades($courseid);
   
              

  object(stdClass)#175 (8) {

  ["scaleid"]=>

  int(0)

  ["name"]=>

  string(14) "Total du cours"

  ["grademin"]=>

  string(7) "0.00000"

  ["grademax"]=>

  string(9) "100.00000"

  ["gradepass"]=>

  string(7) "0.00000"

  ["locked"]=>

  bool(false)

  ["hidden"]=>

  bool(false)

  ["grades"]=>

  array(1) {

  [4]=>

  object(stdClass)#174 (12) {

  ["grade"]=>

  bool(false)

  ["locked"]=>

  bool(false)

  ["hidden"]=>

  bool(false)

  ["overridden"]=>

  int(0)

  ["feedback"]=>

  NULL

  ["feedbackformat"]=>

  int(0)

  ["usermodified"]=>

  NULL

  ["dategraded"]=>

  NULL

  ["datesubmitted"]=>

  NULL

  ["str_grade"]=>

  string(6) "Erreur"

  ["str_long_grade"]=>

  string(6) "Erreur"

  ["str_feedback"]=>

  string(0) ""

  }

  }

  }

• Return value with the correctly built object : 

  object(stdClass)#176 (8) {

  ["scaleid"]=>

  int(0)

  ["name"]=>

  string(14) "Total du cours"

  ["grademin"]=>

  string(7) "0.00000"

  ["grademax"]=>

  string(7) "0.00000"

  ["gradepass"]=>

  string(7) "0.00000"

  ["locked"]=>

  bool(false)

  ["hidden"]=>

  bool(false)

  ["grades"]=>

  array(1) {

  [4]=>

  object(stdClass)#467 (12) {

  ["grade"]=>

  NULL

  ["locked"]=>

  bool(false)

  ["hidden"]=>

  bool(false)

  ["overridden"]=>

  int(0)

  ["feedback"]=>

  NULL

  ["feedbackformat"]=>

  int(0)

  ["usermodified"]=>

  NULL

  ["dategraded"]=>

  NULL

  ["datesubmitted"]=>

  NULL

  ["str_grade"]=>

  string(1) "-"

  ["str_long_grade"]=>

  string(1) "-"

  ["str_feedback"]=>

  string(0) ""

  }

  }

  }