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Always create a full 256-entry map in case color values are out of range

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Fixes https://github.com/libsdl-org/SDL/issues/5042
This commit is contained in:
Sam Lantinga 2021-11-30 12:36:46 -08:00
parent 056c09942d
commit 8c91cf7dba
1 changed files with 2 additions and 2 deletions
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4
src/video/SDL_pixels.c
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@ -947,7 +947,7 @@ Map1to1(SDL_Palette * src, SDL_Palette * dst, int *identical)
} }
*identical = 0; *identical = 0;
} }
map = (Uint8 *) SDL_malloc(src->ncolors); map = (Uint8 *) SDL_calloc(256, sizeof(Uint8));
if (map == NULL) { if (map == NULL) {
SDL_OutOfMemory(); SDL_OutOfMemory();
return (NULL); return (NULL);
@ -971,7 +971,7 @@ Map1toN(SDL_PixelFormat * src, Uint8 Rmod, Uint8 Gmod, Uint8 Bmod, Uint8 Amod,
SDL_Palette *pal = src->palette; SDL_Palette *pal = src->palette;
bpp = ((dst->BytesPerPixel == 3) ? 4 : dst->BytesPerPixel); bpp = ((dst->BytesPerPixel == 3) ? 4 : dst->BytesPerPixel);
map = (Uint8 *) SDL_malloc(pal->ncolors * bpp); map = (Uint8 *) SDL_calloc(256, bpp);
if (map == NULL) { if (map == NULL) {
SDL_OutOfMemory(); SDL_OutOfMemory();
return (NULL); return (NULL);