text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE190_Integer_Overflow__short_max_add_31.c
  Label Definition File: CWE190_Integer_Overflow.label.xml
  Template File: sources-sinks-31.tmpl.c
  */
  /*
   * @description
   * CWE: 190 Integer Overflow
   * BadSource: max Set data to the max value for short
   * GoodSource: Set data to a small, non-zero number (two)
   * Sinks: add
   *    GoodSink: Ensure there will not be an overflow before adding 1 to data
   *    BadSink : Add 1 to data, which can cause an overflow
   * Flow Variant: 31 Data flow using a copy of data within the same function
   *
   * */
  
  #include "std_testcase.h"
  
  #ifndef OMITBAD
  
  void CWE190_Integer_Overflow__short_max_add_31_bad()
  {
      short data;
      data = 0;
      /* POTENTIAL FLAW: Use the maximum size of the data type */
      data = SHRT_MAX;
      {
          short dataCopy = data;
          short data = dataCopy;
          {
              /* POTENTIAL FLAW: Adding 1 to data could cause an overflow */
              short result = data + 1;
              printIntLine(result);
          }
      }
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* goodG2B() uses the GoodSource with the BadSink */
  static void goodG2B()
  {
      short data;
      data = 0;
      /* FIX: Use a small, non-zero value that will not cause an overflow in the sinks */
      data = 2;
      {
          short dataCopy = data;
          short data = dataCopy;
          {
              /* POTENTIAL FLAW: Adding 1 to data could cause an overflow */
              short result = data + 1;
              printIntLine(result);
          }
      }
  }
  
  /* goodB2G() uses the BadSource with the GoodSink */
  static void goodB2G()
  {
      short data;
      data = 0;
      /* POTENTIAL FLAW: Use the maximum size of the data type */
      data = SHRT_MAX;
      {
          short dataCopy = data;
          short data = dataCopy;
          /* FIX: Add a check to prevent an overflow from occurring */
          if (data < SHRT_MAX)
          {
              short result = data + 1;
              printIntLine(result);
          }
          else
          {
              printLine("data value is too large to perform arithmetic safely.");
          }
      }
  }
  
  void CWE190_Integer_Overflow__short_max_add_31_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()...");
      CWE190_Integer_Overflow__short_max_add_31_good();
      printLine("Finished good()");
  #endif /* OMITGOOD */
  #ifndef OMITBAD
      printLine("Calling bad()...");
      CWE190_Integer_Overflow__short_max_add_31_bad();
      printLine("Finished bad()");
  #endif /* OMITBAD */
      return 0;
  }
  
  #endif
  