Mercurial > sdl-ios-xcode
view test/testerror.c @ 5051:a69e36365766
Fixed bug #1027
Vittorio Giovara 2010-07-17 19:21:36 PDT
fix the double free error
in SDL_uikitview the variable 'textfield' is initialialized and set to
autorelease.
however in the dealloc method a second [release] is sent.
If the textfield has not been set to nil before (with a viewDidUnload for
example) this can lead to awful hard-to-find crashes when the SDL code
terminates.
the error message is
-[textfield release] message sent to deallocated instance 0x4e5fa90
the fix is simple, just release the object as soon as it is added to the
subview, see attached patch
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Wed, 19 Jan 2011 23:45:29 -0800 |
parents | 0d1b16ee0bca |
children |
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/* Simple test of the SDL threading code and error handling */ #include <stdio.h> #include <stdlib.h> #include <signal.h> #include "SDL.h" #include "SDL_thread.h" static int alive = 0; /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */ static void quit(int rc) { SDL_Quit(); exit(rc); } int SDLCALL ThreadFunc(void *data) { /* Set the child thread error string */ SDL_SetError("Thread %s (%lu) had a problem: %s", (char *) data, SDL_ThreadID(), "nevermind"); while (alive) { printf("Thread '%s' is alive!\n", (char *) data); SDL_Delay(1 * 1000); } printf("Child thread error string: %s\n", SDL_GetError()); return (0); } int main(int argc, char *argv[]) { SDL_Thread *thread; /* Load the SDL library */ if (SDL_Init(0) < 0) { fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError()); return (1); } /* Set the error value for the main thread */ SDL_SetError("No worries"); alive = 1; thread = SDL_CreateThread(ThreadFunc, "#1"); if (thread == NULL) { fprintf(stderr, "Couldn't create thread: %s\n", SDL_GetError()); quit(1); } SDL_Delay(5 * 1000); printf("Waiting for thread #1\n"); alive = 0; SDL_WaitThread(thread, NULL); printf("Main thread error string: %s\n", SDL_GetError()); SDL_Quit(); return (0); }