Actually, SDL_WaitEvent() doesn't seem to be the problem. I got it using SDL_PollEvent() too, but with very simple programs, it doesn't crash (even using SDL_PollEvent()). I'm now looking for what the problem could be.

Here is a very sample code to reproduce the crash :

// code start
#include <stdlib.h>
#include <stdio.h>
#include <SDL.h>
#include <OpenGL/gl.h>

#define LARGEUR 640
#define HAUTEUR 480
#define FPS        24

static SDL_Surface *ecran = NULL;

void init (void)
{
    if (SDL_Init(SDL_INIT_VIDEO) < 0) {
        printf("Couldn't initialize SDL: %s\n", SDL_GetError());
        exit(1);
    }
    
    ecran = SDL_SetVideoMode(LARGEUR, HAUTEUR, 32, SDL_OPENGL);
    
    if (ecran == NULL) {
        puts("*** error while creating window");
        exit(1);
    }
}

void draw (void)
{
    glClear(GL_COLOR_BUFFER_BIT);
    glFlush();
}

void loop (void)
{
    SDL_Event event;
    int continuer = 1;
    
    int delay = 1000/FPS;
    int thenTicks = -1;
    int nowTicks;
    
    while (continuer) {
        SDL_PollEvent(&event);
        switch(event.type) {
            case SDL_QUIT:
                continuer = 0;
                break;
                
            case SDL_KEYDOWN:
                switch(event.key.keysym.sym) {
                    case SDLK_ESCAPE:
                        continuer = 0;
                        break;
                    default:
                        break;
                }
                break;
        }
        
        draw();
        SDL_GL_SwapBuffers();
        
        if (thenTicks > 0) {
            nowTicks = SDL_GetTicks();
            delay += (1000/FPS - (nowTicks - thenTicks));
            thenTicks = nowTicks;
            
            if (delay < 0)
                delay = 1000/FPS;
            
        } else {
            thenTicks = SDL_GetTicks ();
        }
    }
}

int main (int argc, char **argv) {
    init();
    loop();
    SDL_Quit();
    return 0;
}
// code end

gcc -o exec code.c -Wall `sdl-config --cflags --libs` -framework OpenGL

There is still a segfault.

This may be fixed with SDL from subversion:
http://www.libsdl.org/svn.php

Can you try this and let us know?

I compiled the sources via subversion (SDL 1.2) and it now works !