Mercurial > sdl-ios-xcode
view src/video/Xext/extensions/StdCmap.h @ 5126:d79ff339d1f2
Fixed bug #1056 (Frequent crashes in Touch events by simply touching the screen)
Joseba García Echebarria 2010-12-15 01:55:22 PST
I believe the crash is caused by a check not being performed on wether an
SDL_Touch element is NULL before using it in the SDL_SendTouchMotion function
in src/events/SDL_touch.c around line 400.
Judging from the rest of the code, there's a missing
if (!touch) {
return 0;
}
before using "touch" as SDL_GetFinger(), SDL_GetFingerIndexId() use
touch->num_fingers without checking.
I can attach a patch if you like. It seems pretty straightforward, though.
I have yet to discover why touch is being returned as NULL as this error is
only triggered when an actual gesture has been performed, maybe something
related to SDL_AddTouch()?
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Fri, 28 Jan 2011 10:21:58 -0800 (2011-01-28) |
parents | 2032348afed1 |
children |
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/* $Xorg: StdCmap.h,v 1.5 2001/02/09 02:03:53 xorgcvs Exp $ */ /* Copyright 1988, 1998 The Open Group Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Except as contained in this notice, the name of The Open Group shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from The Open Group. */ /* $XFree86: xc/lib/Xmu/StdCmap.h,v 1.8 2001/01/23 17:38:14 keithp Exp $ */ /* * The interfaces described by this header file are for miscellaneous utilities * and are not part of the Xlib standard. */ #ifndef _XMU_STDCMAP_H_ #define _XMU_STDCMAP_H_ #include <X11/Xfuncproto.h> #include "SDL_name.h" _XFUNCPROTOBEGIN extern Status XmuAllStandardColormaps(Display * dpy); extern Status XmuCreateColormap(Display * dpy, XStandardColormap * colormap); extern void XmuDeleteStandardColormap (Display * dpy, int screen, Atom property); extern Status XmuGetColormapAllocation (XVisualInfo * vinfo, Atom property, unsigned long *red_max_return, unsigned long *green_max_return, unsigned long *blue_max_return); extern Status XmuLookupStandardColormap (Display * dpy, int screen, VisualID visualid, unsigned int depth, Atom property, Bool replace, Bool retain); extern XStandardColormap *XmuStandardColormap (Display * dpy, int screen, VisualID visualid, unsigned int depth, Atom property, Colormap cmap, unsigned long red_max, unsigned long green_max, unsigned long blue_max); extern Status XmuVisualStandardColormaps (Display * dpy, int screen, VisualID visualid, unsigned int depth, Bool replace, Bool retain); extern Bool XmuDistinguishableColors(XColor * colors, int count); extern Bool XmuDistinguishablePixels (Display * dpy, Colormap cmap, unsigned long *pixels, int count); _XFUNCPROTOEND #endif /* _XMU_STDCMAP_H_ */