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Date: Sat, 27 Nov 2004 13:35:43 +0100 From: "Martin Bickel" Subject: [SDL] Patch: fixing uninitilized palette while running Valgrind over my application I found the following problem in SDL: The function MapNto1 allocates SDL_Color colors[256] but does not initialize it. SDL_DitherColors is then called which initialized the r, g and b component, but not the 'unused' component of each color. When Map1to1 is called from MapNto1, it runs a memcmp on the colors, which also evaluates the unused component and therefor returns differences much more often than necessary. So the 'unused' component of SDL_Color should be initialized. This patch does this by calling memset for the whole array in MapNto1 .
author Sam Lantinga <slouken@libsdl.org>
date Tue, 30 Nov 2004 14:28:20 +0000
parents 355632dca928
children
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<HTML
><HEAD
><TITLE
>SDL_CDPause</TITLE
><META
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CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
"><LINK
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><H1
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>SDL_CDPause</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN7425"
></A
><H2
>Name</H2
>SDL_CDPause&nbsp;--&nbsp;Pauses a CDROM</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN7428"
></A
><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><A
NAME="AEN7429"
></A
><P
></P
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>int <B
CLASS="FSFUNC"
>SDL_CDPause</B
></CODE
>(SDL_CD *cdrom);</CODE
></P
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN7435"
></A
><H2
>Description</H2
><P
>Pauses play on the given <TT
CLASS="PARAMETER"
><I
>cdrom</I
></TT
>.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN7439"
></A
><H2
>Return Value</H2
><P
>Returns <SPAN
CLASS="RETURNVALUE"
>0</SPAN
> on success, or <SPAN
CLASS="RETURNVALUE"
>-1</SPAN
> on an error.</P
></DIV
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CLASS="REFSECT1"
><A
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></A
><H2
>See Also</H2
><P
><A
HREF="sdlcdplay.html"
><TT
CLASS="FUNCTION"
>SDL_CDPlay</TT
></A
>,
<A
HREF="sdlcdresume.html"
><TT
CLASS="FUNCTION"
>SDL_CDResume</TT
></A
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