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bleh this one should work

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kojima
2002-11-08 19:30:53 +00:00
parent 55f3cb9577
commit 19f7fbc949
1 changed files with 6 additions and 16 deletions
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20
wrlib/raster.c
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@@ -39,28 +39,18 @@ int RErrorCode=RERR_NONE;
#define HAS_ALPHA(I) ((I)->format == RRGBAFormat) #define HAS_ALPHA(I) ((I)->format == RRGBAFormat)
#define MAX_WIDTH 30000
#define MAX_HEIGHT 30000
RImage* RImage*
RCreateImage(unsigned width, unsigned height, int alpha) RCreateImage(unsigned width, unsigned height, int alpha)
{ {
RImage *image=NULL; RImage *image=NULL;
unsigned bla1, bla2;
assert(width>0 && height>0); assert(width>0 && height>0);
/* detect overflow (gr33tz to ruda :D) */ if (width > MAX_WIDTH || height > MAX_HEIGHT) {
bla1 = width*height;
if (bla1 / height != width) {
RErrorCode = RERR_NOMEMORY;
return NULL;
}
bla2 = bla1*4;
if (bla2/4 != bla1) {
RErrorCode = RERR_NOMEMORY;
return NULL;
}
if (bla2 > INT_MAX - 4) {
RErrorCode = RERR_NOMEMORY; RErrorCode = RERR_NOMEMORY;
return NULL; return NULL;
} }