I have found a false positive deffect in cppcheck

[Jaroslav Fojtik]

Dears,

size = vsprintf(NULL, format, paramList);
is not NULL dereference but standard way how to get final string size.

---

#include <stdarg.h>
#include <stdio.h>
int string::printf(const char* format, ...)
{
  va_list paramList;
  va_start(paramList, format);
#ifdef _HAVE_VSNPRINTF
  size = vsnprintf(0, 0, format, paramList);
#else
  size = vsprintf(NULL, format, paramList);
#endif

  if(size)
    {
    resize(size);
#ifdef _HAVE_VSNPRINTF
    size = vsnprintf(ch, maxlen, format, paramList);
#else
    size = vsprintf(ch, format, paramList);
#endif
    }
  else
    erase();

  va_end(paramList);
  return size;
}

---

Jara

[Daniel Marjamäki]

sorry for late reply. I fail to reproduce with latest cppcheck. If you still see this false positive then please feel free to ping..