view test/testtypes.c @ 997:3bf4103b2b89

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 45b1c4303f87
children d93862a3d821
line wrap: on
line source


#include <stdio.h>
#include "SDL_main.h"
#include "SDL_types.h"

int main(int argc, char *argv[])
{
	int error = 0;
	int verbose = 1;

	if ( argv[1] && (strcmp(argv[1], "-q") == 0) )
		verbose = 0;

	if ( sizeof(Uint8) != 1 ) {
		if ( verbose )
			printf("sizeof(Uint8) != 1, instead = %d\n",
								sizeof(Uint8));
		++error;
	}
	if ( sizeof(Uint16) != 2 ) {
		if ( verbose )
			printf("sizeof(Uint16) != 2, instead = %d\n",
								sizeof(Uint16));
		++error;
	}
	if ( sizeof(Uint32) != 4 ) {
		if ( verbose )
			printf("sizeof(Uint32) != 4, instead = %d\n",
								sizeof(Uint32));
		++error;
	}
#ifdef SDL_HAS_64BIT_TYPE
	if ( sizeof(Uint64) != 8 ) {
		if ( verbose )
			printf("sizeof(Uint64) != 8, instead = %d\n",
								sizeof(Uint64));
		++error;
	}
#else
	if ( verbose ) {
		printf("WARNING: No 64-bit datatype on this platform\n");
	}
#endif
	if ( verbose && ! error )
		printf("All data types are the expected size.\n");

	return( error ? 1 : 0 );
}