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image: add bounds check for index operators

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This commit is contained in:
Danny Robson 2015-06-15 17:47:49 +10:00
parent 79a936b583
commit ca59c95c26
1 changed files with 10 additions and 0 deletions
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10
image.cpp
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@ -258,6 +258,9 @@ template <typename T>
T T
buffer<T>::operator[] (point<2,size_t> p) const buffer<T>::operator[] (point<2,size_t> p) const
{ {
CHECK_LT (p.x, w);
CHECK_LT (p.y, h);
return begin ()[p.y * s + p.x]; return begin ()[p.y * s + p.x];
} }
@ -267,6 +270,9 @@ template <typename T>
T& T&
buffer<T>::operator[] (point<2,size_t> p) buffer<T>::operator[] (point<2,size_t> p)
{ {
CHECK_LT (p.x, w);
CHECK_LT (p.y, h);
return begin ()[p.y * s + p.x]; return begin ()[p.y * s + p.x];
} }
@ -276,6 +282,8 @@ template <typename T>
T T
buffer<T>::operator[] (size_t idx) const buffer<T>::operator[] (size_t idx) const
{ {
CHECK_LT (idx, h * s);
return begin ()[idx]; return begin ()[idx];
} }
@ -285,6 +293,8 @@ template <typename T>
T& T&
buffer<T>::operator[] (size_t idx) buffer<T>::operator[] (size_t idx)
{ {
CHECK_LT (idx, h * s);
return begin ()[idx]; return begin ()[idx];
} }