DerelictSDL2 crashes

[lobo via Digitalmars-d]

On Friday, 26 August 2016 at 21:26:13 UTC, unDEFER wrote:
> Hello!
>
> I'm trying compile SDL "Hello, World"
>
> ---
> import std.stdio;
> import derelict.sdl2.sdl;
>
> //Screen dimension constants
> const int SCREEN_WIDTH = 640;
> const int SCREEN_HEIGHT = 480;
>
> int main()
> {
>     DerelictSDL2.load();
>
> 	//The window we'll be rendering to
> 	SDL_Window* window = null;
> 	
> 	//The surface contained by the window
> 	SDL_Surface* screenSurface = null;
>
> 	//Initialize SDL
> 	if( SDL_Init( SDL_INIT_VIDEO ) < 0 )
> 	{
> 		printf( "SDL could not initialize! SDL_Error: %s\n", 
> SDL_GetError() );
> 	}
> 	else
> 	{
> 		//Create window
> 		window = SDL_CreateWindow( "SDL Tutorial", 
> SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, 
> SCREEN_HEIGHT, SDL_WINDOW_SHOWN );
> 		if( window == null )
> 		{
> 			printf( "Window could not be created! SDL_Error: %s\n", 
> SDL_GetError() );
> 		}
> 		else
> 		{
> 			//Get window surface
> 			screenSurface = SDL_GetWindowSurface( window );
>
> 			//Fill the surface white
> 			SDL_FillRect( screenSurface, null, SDL_MapRGB( 
> screenSurface.format, 0xFF, 0x00, 0x00 ) );
> 			
> 			//Update the surface
> 			SDL_UpdateWindowSurface( window );
>
>             //Wait two seconds
> 			SDL_Delay( 2000 );
> 		}
> 	}
>
> 	//Destroy window
> 	SDL_DestroyWindow( window );
>
> 	//Quit SDL subsystems
> 	SDL_Quit();
>
> 	return 0;
> }
> ---
>
> $ dmd -I/path/to/DerelictSDL2/source 
> -I/path/to/derelict-util-2.0.6/source main.d 
> /path/to/DerelictSDL2/lib/libDerelictSDL2.a 
> /path/to/derelict-util-2.0.6/lib/libDerelictUtil.a -gc
>
> It compiles but on running crashes (as shows valgrind) in 
> SDL_FillRect function.
>
> BUT in gdb it runs successfully and I see red window.
> What I'm doing wrong? How gdb can make not working code working?
>
> dmd 2.071.1
>
> Thank you!

I tried your code in Arch x86_64 using dub and it worked for me. 
This is the dub file I used:

---
name "testsdl"
targetType "executable"
dependency "derelict-sdl2" version=">=2.0.0"
dependency "derelict-util" version=">=2.0.6"
dependency "derelict-gl3" version=">=1.0.18"
---

If you're not familiar with dub and want to test these are the 
steps I took.
0. Get dub [1]
1. mkdir -p testsdl/source
2. Copy your source code from OP into a file 
"testsdl/source/app.d"
3. Copy the above dub config into a file "testsdl/dub.sdl"
4. cd testsdl; dub build

It should pull in the dependencies and build a program called 
"testsdl".

bye,
lobo

[1] https://code.dlang.org/download