diff options
Diffstat (limited to 'xorg-server/include/regionstr.h')
-rw-r--r-- | xorg-server/include/regionstr.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/xorg-server/include/regionstr.h b/xorg-server/include/regionstr.h index 515e93ffa..103235859 100644 --- a/xorg-server/include/regionstr.h +++ b/xorg-server/include/regionstr.h @@ -127,7 +127,10 @@ RegionEnd(RegionPtr reg) static inline size_t RegionSizeof(size_t n) { - return (sizeof(RegDataRec) + ((n) * sizeof(BoxRec))); + if (n < ((INT_MAX - sizeof(RegDataRec)) / sizeof(BoxRec))) + return (sizeof(RegDataRec) + ((n) * sizeof(BoxRec))); + else + return 0; } static inline void @@ -138,9 +141,10 @@ RegionInit(RegionPtr _pReg, BoxPtr _rect, int _size) (_pReg)->data = (RegDataPtr) NULL; } else { + size_t rgnSize; (_pReg)->extents = RegionEmptyBox; - if (((_size) > 1) && ((_pReg)->data = - (RegDataPtr) malloc(RegionSizeof(_size)))) { + if (((_size) > 1) && ((rgnSize = RegionSizeof(_size)) > 0) && + (((_pReg)->data = (RegDataPtr) malloc(rgnSize)) != NULL)) { (_pReg)->data->size = (_size); (_pReg)->data->numRects = 0; } |