mirror of
https://github.com/Relintai/sdl2_frt.git
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0e45984fa0
The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
/*
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Copyright (C) 1997-2015 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely.
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*/
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/* Test program to test dynamic loading with the loadso subsystem.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "SDL.h"
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typedef int (*fntype) (const char *);
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int
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main(int argc, char *argv[])
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{
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int retval = 0;
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int hello = 0;
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const char *libname = NULL;
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const char *symname = NULL;
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void *lib = NULL;
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fntype fn = NULL;
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if (argc != 3) {
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const char *app = argv[0];
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SDL_Log("USAGE: %s <library> <functionname>\n", app);
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SDL_Log(" %s --hello <lib with puts()>\n", app);
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return 1;
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}
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/* Initialize SDL */
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if (SDL_Init(0) < 0) {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
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return 2;
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}
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if (strcmp(argv[1], "--hello") == 0) {
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hello = 1;
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libname = argv[2];
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symname = "puts";
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} else {
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libname = argv[1];
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symname = argv[2];
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}
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lib = SDL_LoadObject(libname);
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if (lib == NULL) {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_LoadObject('%s') failed: %s\n",
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libname, SDL_GetError());
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retval = 3;
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} else {
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fn = (fntype) SDL_LoadFunction(lib, symname);
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if (fn == NULL) {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_LoadFunction('%s') failed: %s\n",
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symname, SDL_GetError());
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retval = 4;
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} else {
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SDL_Log("Found %s in %s at %p\n", symname, libname, fn);
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if (hello) {
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SDL_Log("Calling function...\n");
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fflush(stdout);
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fn(" HELLO, WORLD!\n");
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SDL_Log("...apparently, we survived. :)\n");
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SDL_Log("Unloading library...\n");
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fflush(stdout);
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}
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}
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SDL_UnloadObject(lib);
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}
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SDL_Quit();
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return retval;
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}
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