Thread: SDL: TTF_RenderText_Solid screwing up in Ubuntu 9.10

Hey guys, I've been teaching myself SDL to start out w/ a simple API, using LazyFoo's tutorials. I created a Tic Tac Toe program, which works great in Windows XP, under Code::Blocks. When I tried running the code in Ubuntu 9.10 under Code::Blocks I get a segmentation fault. I recalled reading that TTF_RenderText_Solid may not work under linux, so I tried using both RenderText_Shaded and RenderText_Blended, but wound up getting the same error...this is the chunk of code I believe to be the culprit.

Code:

void printScoreBoard(){
    int relwidth = (SCREENWIDTH - scores->w)/2; // FOR BUTTONS
    int relheight = (SCREENHEIGHT - scores->h)/2;
    int coords[3] = {relwidth+54,relwidth+115,relwidth+182};
    char buffer[5] = {'\0','\0','\0','\0','\0'};
    redrawBoard();
    applySurface(relwidth,relheight,scores,screen);
    for (int i = 0; i < 3; i++){
        sprintf(buffer,"%d",scoreboard[i]); // Scoreboard is a var holding wins and whatnot
        if (!(message = TTF_RenderText_Blended(font,buffer,textColor)))
            printf("Oh My Goodness, an error : %s", TTF_GetError());
        else
            applySurface(coords[i],relheight+209,message,screen);
    } // CLSP is a constant specifying the location of the button to clear scores in the sprite
    applySurface(relwidth+35,relheight+268,buttons,screen,&mclip[CLSP]);
}

The disassembly of memory shows the crash happening here:

Code:

0x80495fe	mov    eax,DWORD PTR [ebp+eax*4-0x28]

if that's of any use...

Essentially the C++ code is supposed to print the "score" of the current game, based on X wins, O wins, and Ties, using TTF fonts to display the score...

Here's some screenshots
http://i93.photobucket.com/albums/l5...an/screen2.jpg
http://i93.photobucket.com/albums/l5...an/screen3.jpg

I read the TTF documentation on the functions, which say that passing a NULL font can cause a segfault, and that passing NULL text causes undefined behavior, but I defined the font, and I'm linking against SDL_ttf and freetype...so I'm at a complete loss...does anyone know a workaround or something that I can use?

I attached the full cpp file, it was 342 lines so I didn't think it was really good etiquette to paste it all here ^_^

> if (!(message = TTF_RenderText_Blended(font,buffer,textColor)))
So use the debugger, put a breakpoint on this line and examine in detail the passed parameters.

Or wait for the crash to happen (whilst running in the debugger), then examine the variables in this stack frame.

> char buffer[5]
Scores > 9999 perhaps?
This is an easy buffer overflow.