PVS-StudioWarnings

PVS-Studio warning V511 for Wolf

Nov 21st, 2014
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C++ 0.92 KB | None | 0 0
  1. void BG_ParseConditionBits(
  2.   char **text_pp, animStringItem_t *stringTable,
  3.   int condIndex, int result[2] )
  4. {
  5.   ...
  6.   memset( result, 0, sizeof( result ) );
  7.   ...
  8. }
  9.  
  10. The 'result' object is simply a pointer. Value 2 in the square brackets indicates to the programmer that he is working with an array of 2 items.
  11. But it is not an array of items which is passed into the function - it is only the pointer.
  12. So, the sizeof(result) expression will return value 4 or 8 (the size of the pointer in a 32-bit/64-bit system).
  13.  
  14. This suspicious code was found in Wolf project by PVS-Studio static code analyzer.
  15. Warning message is:
  16. V511 The sizeof() operator returns size of the pointer, and not of the array, in 'sizeof (result)' expression. cgame bg_animation.c 807
  17.  
  18. PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/
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