Re: [pygame] Another blitting surface to itself crash

[Lenard Lindstrom <len-l@xxxxxxxxx>]

To add to the confusion the attached C program prints "Success." (to 
stdout.txt) with the MinGW built SDL.dll 1.2.13 provided with Pygame.

Lenard


René Dudfield wrote:
> A summary of what has been found out so far:
>
> * it doesn't seem to crash on linux/osx.
> * It never crashed for SDL 1.2.7 through 1.2.9 (but crashes with 1.2.9
> build Lenard made)
> * For SDL 1.2.10 and 1.2.11 it crashes after like 2-6 passes, and it
> crashes in the blit from surface to screen
> * for SDL 1.2.12 and 1.2.13 it crashes immediately on first blit of a
> surface to itself, everytime
> * crashes with windib, and directx drivers.
> * works with a replacement 1.2.13 SDL.dll built with MSVC by brian.
> * crashes with assembly disabled.
> * -O compilation also fails.
> * 1.2.9 SDL fails for Lenard, built with mingw.
>
>
>   

#include "SDL.h"
#include <stdio.h>

int main(int argc, char *argv[])
{
  SDL_Surface *s = 0;
  SDL_Rect r = {0, 0, 10, 10};

  s = SDL_CreateRGBSurface(SDL_SWSURFACE, 10, 10, 32, 0xFF0000, 0xFF00, 0xFF, 0);
  if (!s)
    {
      printf("Surface creation failed.\n");
      return 1;
    }

  if (SDL_BlitSurface(s, &r, s, &r) == -1)
    {
      printf("Blit failed.\n");
      return 2;
    }

  printf("Success.\n");
  return 0;
}