(gdb) frame 1
#1  0x3005d280 in QZ_ListModes (this=0x181fe00, format=0xbfffc54c, flags=2415919106) at /Users/admin/Desktop/SDL-1.2.9/Xcode/SDL/../../src/video/quartz/SDL_QuartzVideo.m:243
243     /Users/admin/Desktop/SDL-1.2.9/Xcode/SDL/../../src/video/quartz/SDL_QuartzVideo.m: No such file or directory.
        in /Users/admin/Desktop/SDL-1.2.9/Xcode/SDL/../../src/video/quartz/SDL_QuartzVideo.m
Current language:  auto; currently objective-c
(gdb) print mode list
No symbol "mode" in current context.
(gdb) print mode_list
No symbol "mode_list" in current context.