tests/gl_error.c

#include <assert.h>
#include <emscripten.h>
#include <emscripten/html5.h>
#include <GL/gl.h>
#include <stdio.h>
#include <string.h>
#include "SDL/SDL.h"

int main()
{
  SDL_Surface *screen;

  assert(SDL_Init(SDL_INIT_VIDEO) == 0);
  SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
  screen = SDL_SetVideoMode( 256, 256, 16, SDL_OPENGL );
  assert(screen);

  // pop from empty stack
  glPopMatrix();
  assert(glGetError() == GL_STACK_UNDERFLOW);

  REPORT_RESULT(1);
  return 0;
}