text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE415_Double_Free__malloc_free_char_44.c
  Label Definition File: CWE415_Double_Free__malloc_free.label.xml
  Template File: sources-sinks-44.tmpl.c
  */
  /*
   * @description
   * CWE: 415 Double Free
   * BadSource:  Allocate data using malloc() and Deallocate data using free()
   * GoodSource: Allocate data using malloc()
   * Sinks:
   *    GoodSink: do nothing
   *    BadSink : Deallocate data using free()
   * Flow Variant: 44 Data/control flow: data passed as an argument from one function to a function in the same source file called via a function pointer
   *
   * */
  
  #include "std_testcase.h"
  
  #include <wchar.h>
  
  #ifndef OMITBAD
  
  static void badSink(char * data)
  {
      /* POTENTIAL FLAW: Possibly freeing memory twice */
      free(data);
  }
  
  void CWE415_Double_Free__malloc_free_char_44_bad()
  {
      char * data;
      /* define a function pointer */
      void (*funcPtr) (char *) = badSink;
      /* Initialize data */
      data = NULL;
      data = (char *)malloc(100*sizeof(char));
      if (data == NULL) {exit(-1);}
      /* POTENTIAL FLAW: Free data in the source - the bad sink frees data as well */
      free(data);
      /* use the function pointer */
      funcPtr(data);
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* goodG2B() uses the GoodSource with the BadSink */
  static void goodG2BSink(char * data)
  {
      /* POTENTIAL FLAW: Possibly freeing memory twice */
      free(data);
  }
  
  static void goodG2B()
  {
      char * data;
      void (*funcPtr) (char *) = goodG2BSink;
      /* Initialize data */
      data = NULL;
      data = (char *)malloc(100*sizeof(char));
      if (data == NULL) {exit(-1);}
      /* FIX: Do NOT free data in the source - the bad sink frees data */
      funcPtr(data);
  }
  
  /* goodB2G() uses the BadSource with the GoodSink */
  static void goodB2GSink(char * data)
  {
      /* do nothing */
      /* FIX: Don't attempt to free the memory */
      ; /* empty statement needed for some flow variants */
  }
  
  static void goodB2G()
  {
      char * data;
      void (*funcPtr) (char *) = goodB2GSink;
      /* Initialize data */
      data = NULL;
      data = (char *)malloc(100*sizeof(char));
      if (data == NULL) {exit(-1);}
      /* POTENTIAL FLAW: Free data in the source - the bad sink frees data as well */
      free(data);
      funcPtr(data);
  }
  
  void CWE415_Double_Free__malloc_free_char_44_good()
  {
      goodG2B();
      goodB2G();
  }
  
  #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()...");
      CWE415_Double_Free__malloc_free_char_44_good();
      printLine("Finished good()");
  #endif /* OMITGOOD */
  #ifndef OMITBAD
      printLine("Calling bad()...");
      CWE415_Double_Free__malloc_free_char_44_bad();
      printLine("Finished bad()");
  #endif /* OMITBAD */
      return 0;
  }
  
  #endif
  