text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE127_Buffer_Underread__wchar_t_declare_memcpy_12.c
  Label Definition File: CWE127_Buffer_Underread.stack.label.xml
  Template File: sources-sink-12.tmpl.c
  */
  /*
   * @description
   * CWE: 127 Buffer Under-read
   * BadSource:  Set data pointer to before the allocated memory buffer
   * GoodSource: Set data pointer to the allocated memory buffer
   * Sink: memcpy
   *    BadSink : Copy data to string using memcpy
   * Flow Variant: 12 Control flow: if(global_returns_t_or_f())
   *
   * */
  
  #include "std_testcase.h"
  
  #include <wchar.h>
  
  #ifndef OMITBAD
  
  void CWE127_Buffer_Underread__wchar_t_declare_memcpy_12_bad()
  {
      wchar_t * data;
      wchar_t data_buf[100];
      wmemset(data_buf, L'A', 100-1);
      data_buf[100-1] = L'\0';
      if(global_returns_t_or_f())
      {
          /* FLAW: Set data pointer to before the allocated memory buffer */
          data = data_buf - 8;
      }
      else
      {
          /* FIX: Set data pointer to the allocated memory buffer */
          data = data_buf;
      }
      {
          wchar_t dest[100];
          wmemset(dest, L'C', 100-1); /* fill with 'C's */
          dest[100-1] = L'\0'; /* null terminate */
          /* POTENTIAL FLAW: Possibly copy from a memory location located before the source buffer */
          memcpy(dest, data, 100*sizeof(wchar_t));
          /* Ensure null termination */
          dest[100-1] = L'\0';
          printWLine(dest);
      }
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* goodG2B() - use goodsource and badsink by changing the "if" so that
     both branches use the GoodSource */
  static void goodG2B()
  {
      wchar_t * data;
      wchar_t data_buf[100];
      wmemset(data_buf, L'A', 100-1);
      data_buf[100-1] = L'\0';
      if(global_returns_t_or_f())
      {
          /* FIX: Set data pointer to the allocated memory buffer */
          data = data_buf;
      }
      else
      {
          /* FIX: Set data pointer to the allocated memory buffer */
          data = data_buf;
      }
      {
          wchar_t dest[100];
          wmemset(dest, L'C', 100-1); /* fill with 'C's */
          dest[100-1] = L'\0'; /* null terminate */
          /* POTENTIAL FLAW: Possibly copy from a memory location located before the source buffer */
          memcpy(dest, data, 100*sizeof(wchar_t));
          /* Ensure null termination */
          dest[100-1] = L'\0';
          printWLine(dest);
      }
  }
  
  void CWE127_Buffer_Underread__wchar_t_declare_memcpy_12_good()
  {
      goodG2B();
  }
  
  #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()...");
      CWE127_Buffer_Underread__wchar_t_declare_memcpy_12_good();
      printLine("Finished good()");
  #endif /* OMITGOOD */
  #ifndef OMITBAD
      printLine("Calling bad()...");
      CWE127_Buffer_Underread__wchar_t_declare_memcpy_12_bad();
      printLine("Finished bad()");
  #endif /* OMITBAD */
      return 0;
  }
  
  #endif
  