text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE416_Use_After_Free__malloc_free_struct_15.c
  Label Definition File: CWE416_Use_After_Free__malloc_free.label.xml
  Template File: sources-sinks-15.tmpl.c
  */
  /*
   * @description
   * CWE: 416 Use After Free
   * BadSource:  Allocate data using malloc(), initialize memory block, and Deallocate data using free()
   * GoodSource: Allocate data using malloc() and initialize memory block
   * Sinks:
   *    GoodSink: Do nothing
   *    BadSink : Use data
   * Flow Variant: 15 Control flow: switch(6) and switch(7)
   *
   * */
  
  #include "std_testcase.h"
  
  #include <wchar.h>
  
  #ifndef OMITBAD
  
  void CWE416_Use_After_Free__malloc_free_struct_15_bad()
  {
      twoIntsStruct * data;
      /* Initialize data */
      data = NULL;
      switch(6)
      {
      case 6:
          data = (twoIntsStruct *)malloc(100*sizeof(twoIntsStruct));
          {
              size_t i;
              for(i = 0; i < 100; i++)
              {
                  data[i].intOne = 1;
                  data[i].intTwo = 2;
              }
          }
          /* POTENTIAL FLAW: Free data in the source - the bad sink attempts to use data */
          free(data);
          break;
      default:
          /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
          printLine("Benign, fixed string");
          break;
      }
      switch(7)
      {
      case 7:
          /* POTENTIAL FLAW: Use of data that may have been freed */
          printStructLine(&data[0]);
          /* POTENTIAL INCIDENTAL - Possible memory leak here if data was not freed */
          break;
      default:
          /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
          printLine("Benign, fixed string");
          break;
      }
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* goodB2G1() - use badsource and goodsink by changing the second switch to switch(8) */
  static void goodB2G1()
  {
      twoIntsStruct * data;
      /* Initialize data */
      data = NULL;
      switch(6)
      {
      case 6:
          data = (twoIntsStruct *)malloc(100*sizeof(twoIntsStruct));
          {
              size_t i;
              for(i = 0; i < 100; i++)
              {
                  data[i].intOne = 1;
                  data[i].intTwo = 2;
              }
          }
          /* POTENTIAL FLAW: Free data in the source - the bad sink attempts to use data */
          free(data);
          break;
      default:
          /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
          printLine("Benign, fixed string");
          break;
      }
      switch(8)
      {
      case 7:
          /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
          printLine("Benign, fixed string");
          break;
      default:
          /* FIX: Don't use data that may have been freed already */
          /* POTENTIAL INCIDENTAL - Possible memory leak here if data was not freed */
          /* do nothing */
          ; /* empty statement needed for some flow variants */
          break;
      }
  }
  
  /* goodB2G2() - use badsource and goodsink by reversing the blocks in the second switch */
  static void goodB2G2()
  {
      twoIntsStruct * data;
      /* Initialize data */
      data = NULL;
      switch(6)
      {
      case 6:
          data = (twoIntsStruct *)malloc(100*sizeof(twoIntsStruct));
          {
              size_t i;
              for(i = 0; i < 100; i++)
              {
                  data[i].intOne = 1;
                  data[i].intTwo = 2;
              }
          }
          /* POTENTIAL FLAW: Free data in the source - the bad sink attempts to use data */
          free(data);
          break;
      default:
          /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
          printLine("Benign, fixed string");
          break;
      }
      switch(7)
      {
      case 7:
          /* FIX: Don't use data that may have been freed already */
          /* POTENTIAL INCIDENTAL - Possible memory leak here if data was not freed */
          /* do nothing */
          ; /* empty statement needed for some flow variants */
          break;
      default:
          /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
          printLine("Benign, fixed string");
          break;
      }
  }
  
  /* goodG2B1() - use goodsource and badsink by changing the first switch to switch(5) */
  static void goodG2B1()
  {
      twoIntsStruct * data;
      /* Initialize data */
      data = NULL;
      switch(5)
      {
      case 6:
          /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
          printLine("Benign, fixed string");
          break;
      default:
          data = (twoIntsStruct *)malloc(100*sizeof(twoIntsStruct));
          {
              size_t i;
              for(i = 0; i < 100; i++)
              {
                  data[i].intOne = 1;
                  data[i].intTwo = 2;
              }
          }
          /* FIX: Do not free data in the source */
          break;
      }
      switch(7)
      {
      case 7:
          /* POTENTIAL FLAW: Use of data that may have been freed */
          printStructLine(&data[0]);
          /* POTENTIAL INCIDENTAL - Possible memory leak here if data was not freed */
          break;
      default:
          /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
          printLine("Benign, fixed string");
          break;
      }
  }
  
  /* goodG2B2() - use goodsource and badsink by reversing the blocks in the first switch */
  static void goodG2B2()
  {
      twoIntsStruct * data;
      /* Initialize data */
      data = NULL;
      switch(6)
      {
      case 6:
          data = (twoIntsStruct *)malloc(100*sizeof(twoIntsStruct));
          {
              size_t i;
              for(i = 0; i < 100; i++)
              {
                  data[i].intOne = 1;
                  data[i].intTwo = 2;
              }
          }
          /* FIX: Do not free data in the source */
          break;
      default:
          /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
          printLine("Benign, fixed string");
          break;
      }
      switch(7)
      {
      case 7:
          /* POTENTIAL FLAW: Use of data that may have been freed */
          printStructLine(&data[0]);
          /* POTENTIAL INCIDENTAL - Possible memory leak here if data was not freed */
          break;
      default:
          /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
          printLine("Benign, fixed string");
          break;
      }
  }
  
  void CWE416_Use_After_Free__malloc_free_struct_15_good()
  {
      goodB2G1();
      goodB2G2();
      goodG2B1();
      goodG2B2();
  }
  
  #endif /* OMITGOOD */
  
  /* Below is the main(). It is only used when building this testcase on
     its own for testing or for building a binary to use in testing binary
     analysis tools. It is not used when compiling all the testcases as one
     application, which is how source code analysis tools are tested. */
  
  #ifdef INCLUDEMAIN
  
  int main(int argc, char * argv[])
  {
      /* seed randomness */
      srand( (unsigned)time(NULL) );
  #ifndef OMITGOOD
      printLine("Calling good()...");
      CWE416_Use_After_Free__malloc_free_struct_15_good();
      printLine("Finished good()");
  #endif /* OMITGOOD */
  #ifndef OMITBAD
      printLine("Calling bad()...");
      CWE416_Use_After_Free__malloc_free_struct_15_bad();
      printLine("Finished bad()");
  #endif /* OMITBAD */
      return 0;
  }
  
  #endif
  