PVS-Studio warning V630 for Cocos2d-x

Vec2::Vec2() : x(0.0f), y(0.0f) { }
Vec2::Vec2(float xx, float yy) : x(xx), y(yy) { }

bool MotionStreak::initWithFade(...)
{
  ....
  _pointVertexes = (Vec2*)malloc(sizeof(Vec2) * _maxPoints);
  _vertices = (Vec2*)malloc(sizeof(Vec2) * _maxPoints * 2);
  _texCoords = (Tex2F*)malloc(sizeof(Tex2F) * _maxPoints * 2);
  ....
}

This suspicious code was found in Cocos2d-x project by PVS-Studio static code analyzer.
Warning message is:
V630 The 'malloc' function is used to allocate memory for an array of objects which are classes containing constructors and destructors. ccmotionstreak.cpp 122

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