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Daniel Wyatt 2010-03-26 14:52:53 PDT If a non-console Windows SDL program has a non-quoted 0th argument followed optionally by more non-quoted arguments and then by an empty quoted argument, it will crash (attempts to dereference a NULL pointer). In other words, something like this: test.exe [non-quoted args] "" [...] The fix is a one-liner in ParseCommandLine() of src/main/win32/SDL_win32_main.c. You can test this with any non-console SDL program on windows like this: 1) Open a console (cmd.exe) 2) Launch the program in one of the following ways: program "" program arg1 "" program arg1 "" arg3 These will not cause a crash: "program" [...] program "arg1" "" When a Windows program is launched from Explorer, its 0th argument seems to always be quoted, so it won't be a problem in that case. I've tested this on Windows XP SP3 and Windows 7.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 12 Jul 2010 22:08:50 -0700
parents c121d94672cb
children
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/*
Copyright 1989, 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/include/extensions/Xext.h,v 1.7 2005/01/27 03:03:09 dawes Exp $ */

#ifndef _XEXT_H_
#define _XEXT_H_

#include <X11/Xfuncproto.h>

_XFUNCPROTOBEGIN
    typedef int (*XExtensionErrorHandler) (Display *, _Xconst char *,
                                           _Xconst char *);

extern XExtensionErrorHandler
XSetExtensionErrorHandler(XExtensionErrorHandler handler);

extern int XMissingExtension(Display * /* dpy */ ,
                             _Xconst char *     /* ext_name */
    );

_XFUNCPROTOEND
#define X_EXTENSION_UNKNOWN "unknown"
#define X_EXTENSION_MISSING "missing"
#endif /* _XEXT_H_ */
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