# Crash in UITextField

**URL:** <https://discourse.libsdl.org/t/crash-in-uitextfield/34711>\
**Category:** SDL Development\
**Created:** [February 1, 2022, 2:20pm UTC](https://discourse.libsdl.org/t/crash-in-uitextfield/34711 "2022-02-01T14:20:41Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![genericptr](https://discourse.libsdl.org/letter_avatar_proxy/v4/letter/g/7c8e57/32.png) [@genericptr](https://discourse.libsdl.org/u/genericptr)\
**Post date:** [February 1, 2022, 2:20pm UTC](https://discourse.libsdl.org/t/crash-in-uitextfield/34711/1 "2022-02-01T14:20:41Z")

</div>

I’m calling SDL\_UIKitRunApp to start my iPhone program due to some linker errors (I’m using Pascal) and everything works fine (SDL\_Init is called without error after entering SDL\_main) but when I call SDL\_CreateWindow I get this crash deep in the call stack.

I know I don’t have much info for you but that’s the nature of using non-C languages with SDL and all the particularities of the compilers build system.

Do you happen to have any idea what could possibly be causing this? Any tips would be great.

```auto
Thread 1 Queue : com.apple.main-thread (serial)
#0	0x00007fff2554864d in -[UIScrollView _adjustedContentOffsetForContentOffset:skipsAdjustmentIfScrolling:] ()
#1	0x00007fff25548f5d in -[UIScrollView _adjustContentOffsetIfNecessary] ()
#2	0x00007fff2551f4d7 in -[UIScrollView setFrame:] ()
#3	0x00007fff25588cb3 in UIViewCommonInitWithFrame ()
#4	0x00007fff25588672 in -[UIView initWithFrame:] ()
#5	0x00007fff2551b093 in -[UIScrollView initWithFrame:] ()
#6	0x00007fff25373471 in -[UIFieldEditor initWithTextField:] ()
#7	0x00007fff25392007 in -[UITextField _fieldEditor] ()
#8	0x00007fff25393d14 in -[UITextField _inputController] ()
#9	0x00007fff2538b5bc in -[UITextField setTextAlignment:] ()
#10	0x00007fff2538b742 in -[UITextField setDefaultTextAttributes:] ()
#11	0x00007fff2537d554 in __55-[UITextField _initWithFrame:textLayoutManagerEnabled:]_block_invoke ()
#12	0x00007fff25587486 in +[UIView _performSystemAppearanceModifications:] ()
#13	0x00007fff2537d3da in -[UITextField _initWithFrame:textLayoutManagerEnabled:] ()
#14	0x00000001094b87f9 in -[SDL_uikitviewcontroller initKeyboard] at /Users/ryanjoseph/Developer/SDL2-2.0.20/src/video/uikit/SDL_uikitviewcontroller.m:272
#15	0x00000001094b7f01 in -[SDL_uikitviewcontroller initWithSDLWindow:] at /Users/ryanjoseph/Developer/SDL2-2.0.20/src/video/uikit/SDL_uikitviewcontroller.m:95
#16	0x00000001094c7541 in SetupWindowData at /Users/ryanjoseph/Developer/SDL2-2.0.20/src/video/uikit/SDL_uikitwindow.m:145
#17	0x00000001094c7152 in UIKit_CreateWindow at /Users/ryanjoseph/Developer/SDL2-2.0.20/src/video/uikit/SDL_uikitwindow.m:221
#18	0x000000010952fff0 in SDL_CreateWindow at /Users/ryanjoseph/Developer/SDL2-2.0.20/src/video/SDL_video.c:1718
#19	0x0000000108c1ee6d in PASCALMAIN ()
#20	0x0000000108c4194c in FPC_SysEntry ()
#21	0x0000000108c1ed92 in FPC_SYSTEMMAIN ()

```

If for any reason at all it helps to see the Pascal program.

```auto
{$mode objfpc}
{$pascalmainname SDL_main}

{$linkframework SDL2}

program IPhoneSDL;
uses
  SDL;

function SDL_main(argc: integer; argv: pchar): integer; cdecl; external;
function SDL_UIKitRunApp(argc: integer; argv: pchar; mainFunction: pointer): integer; cdecl; external;

function main(argc: integer; argv: pchar): integer; cdecl; public;
begin
  result := SDL_UIKitRunApp(argc, argv, @SDL_main);
end;

var
  event: TSDL_Event;
  window: PSDL_Window;
  context: PSDL_GLContext;
begin
  if SDL_Init(SDL_INIT_VIDEO) < 0 then
    halt(1);

  window := SDL_CreateWindow('My Window', SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 400, 400, SDL_WINDOW_SHOWN + SDL_WINDOW_OPENGL);
  if window <> nil then
    begin
      context := SDL_GL_CreateContext(window);
      SDL_GL_MakeCurrent(window, context);
    end
  else
    halt(1);

  SDL_DestroyWindow(window);
  SDL_Quit;
end.

```