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Date: Sat, 2 Feb 2008 22:08:05 +0100 From: Marcus von Appen To: sdl@lists.libsdl.org Subject: [SDL] [Patch] SDL-1.2 SDL_revcpy() asm patch for the cld flag Hi, as reported through the FreeBSD bug tracking system in SDL 1.2.13 (and in the 1.2 branch, if I see that correctly) the SDL_revcpy() macro sets the direction flag (std), but does not clear it afterwards (cld), which is wrong according to the GCC and SYS V specs. This can cause some weird side effects, which in turn can lead to memory corruption. You can read the full report with a detailed description and test program at http://www.freebsd.org/cgi/query-pr.cgi?pr=ports/120052 Attached is the submitted patch, which fixes the issue. Regards Marcus
author Ryan C. Gordon <icculus@icculus.org>
date Mon, 04 Feb 2008 17:22:56 +0000
parents 355632dca928
children
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<HTML
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>SDL_GetVideoInfo</TITLE
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>SDL_GetVideoInfo</H1
><DIV
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><H2
>Name</H2
>SDL_GetVideoInfo&nbsp;--&nbsp;returns a pointer to information about the video hardware</DIV
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>Synopsis</H2
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><P
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><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
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><CODE
><CODE
CLASS="FUNCDEF"
>SDL_VideoInfo *<B
CLASS="FSFUNC"
>SDL_GetVideoInfo</B
></CODE
>(void);</CODE
></P
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><H2
>Description</H2
><P
>This function returns a read-only pointer to <A
HREF="sdlvideoinfo.html"
>information</A
> about the video
hardware.  If this is called before <A
HREF="sdlsetvideomode.html"
>SDL_SetVideoMode</A
>, the
<TT
CLASS="STRUCTFIELD"
><I
>vfmt</I
></TT
> member of the returned structure will contain the
pixel format of the "best" video mode.</P
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><P
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><TT
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>SDL_SetVideoMode</TT
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>SDL_VideoInfo</SPAN
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