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The program at the end of the report segfaults on the call to SDL_GL_UnbindTexture().

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000034
0x000000010003c3ea in GL_UnbindTexture ()
(gdb) bt
#0  0x000000010003c3ea in GL_UnbindTexture ()
#1  0x0000000100000e29 in main ()

Looking at the code of SDL_GL_BindTexture(), I see there's a special path whenever texture->native is true that is not present in SDL_GL_UnbindTexture is that maybe the problem ? 

Best,

Daniel



#include <unistd.h>
#include "SDL.h"
#include <assert.h>
int main(int argc, char** argv)  
{
  SDL_Init(SDL_INIT_VIDEO);

  SDL_Window *w = SDL_CreateWindow
    ("SDL", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
     640, 480, SDL_WINDOW_OPENGL);
  assert (w);
  
  SDL_GLContext *c = SDL_GL_CreateContext(w);
  assert (c);
  SDL_GL_MakeCurrent(w,c);

  SDL_Renderer *r = SDL_CreateRenderer(w, 0, 0);
  assert (r);

  SDL_Texture *t = SDL_CreateTexture(r, SDL_PIXELFORMAT_RGBA8888, 
                                     SDL_TEXTUREACCESS_STATIC, 256, 256);
  assert(t);
  SDL_GL_BindTexture(t, NULL, NULL);
  SDL_GL_UnbindTexture(t); /* BOOM */
 
  SDL_DestroyTexture(t);
  SDL_DestroyRenderer(r);
  SDL_GL_DeleteContext(c);
  SDL_DestroyWindow(w); 
  SDL_Quit(); 
  return 0;   
}