text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE127_Buffer_Underread__char_alloca_cpy_01.c
  Label Definition File: CWE127_Buffer_Underread.stack.label.xml
  Template File: sources-sink-01.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: cpy
   *    BadSink : Copy data to string using strcpy
   * Flow Variant: 01 Baseline
   *
   * */
  
  #include "std_testcase.h"
  
  #include <wchar.h>
  
  #ifndef OMITBAD
  
  void CWE127_Buffer_Underread__char_alloca_cpy_01_bad()
  {
      char * data;
      char * data_buf = (char *)ALLOCA(100*sizeof(char));
      memset(data_buf, 'A', 100-1);
      data_buf[100-1] = '\0';
      /* FLAW: Set data pointer to before the allocated memory buffer */
      data = data_buf - 8;
      {
          char dest[100];
          memset(dest, 'C', 100-1); /* fill with 'C's */
          dest[100-1] = '\0'; /* null terminate */
          /* POTENTIAL FLAW: Possibly copy from a memory location located before the source buffer */
          strcpy(dest, data);
          printLine(dest);
      }
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* goodG2B uses the GoodSource with the BadSink */
  static void goodG2B()
  {
      char * data;
      char * data_buf = (char *)ALLOCA(100*sizeof(char));
      memset(data_buf, 'A', 100-1);
      data_buf[100-1] = '\0';
      /* FIX: Set data pointer to the allocated memory buffer */
      data = data_buf;
      {
          char dest[100];
          memset(dest, 'C', 100-1); /* fill with 'C's */
          dest[100-1] = '\0'; /* null terminate */
          /* POTENTIAL FLAW: Possibly copy from a memory location located before the source buffer */
          strcpy(dest, data);
          printLine(dest);
      }
  }
  
  void CWE127_Buffer_Underread__char_alloca_cpy_01_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__char_alloca_cpy_01_good();
      printLine("Finished good()");
  #endif /* OMITGOOD */
  #ifndef OMITBAD
      printLine("Calling bad()...");
      CWE127_Buffer_Underread__char_alloca_cpy_01_bad();
      printLine("Finished bad()");
  #endif /* OMITBAD */
      return 0;
  }
  
  #endif
  