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Bug 808679 - Add asserts for Vector::Range and Vector srcbeg <= srcend. r=Waldo

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This commit is contained in:
Chris Peterson 2014-02-11 22:42:39 -08:00
parent d19818cc91
commit e912926be0
1 changed files with 11 additions and 3 deletions
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14
mfbt/Vector.h
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@ -59,12 +59,14 @@ struct VectorImpl
{
/* Destroys constructed objects in the range [begin, end). */
static inline void destroy(T* begin, T* end) {
MOZ_ASSERT(begin <= end);
for (T* p = begin; p < end; ++p)
p->~T();
}
/* Constructs objects in the uninitialized range [begin, end). */
static inline void initialize(T* begin, T* end) {
MOZ_ASSERT(begin <= end);
for (T* p = begin; p < end; ++p)
new(p) T();
}
@ -75,6 +77,7 @@ struct VectorImpl
*/
template<typename U>
static inline void copyConstruct(T* dst, const U* srcbeg, const U* srcend) {
MOZ_ASSERT(srcbeg <= srcend);
for (const U* p = srcbeg; p < srcend; ++p, ++dst)
new(dst) T(*p);
}
@ -85,6 +88,7 @@ struct VectorImpl
*/
template<typename U>
static inline void moveConstruct(T* dst, U* srcbeg, U* srcend) {
MOZ_ASSERT(srcbeg <= srcend);
for (U* p = srcbeg; p < srcend; ++p, ++dst)
new(dst) T(Move(*p));
}
@ -144,6 +148,7 @@ struct VectorImpl<T, N, AP, ThisVector, true>
*
* memset(begin, 0, sizeof(T) * (end-begin));
*/
MOZ_ASSERT(begin <= end);
for (T* p = begin; p < end; ++p)
new(p) T();
}
@ -157,6 +162,7 @@ struct VectorImpl<T, N, AP, ThisVector, true>
*
* memcpy(dst, srcbeg, sizeof(T) * (srcend - srcbeg));
*/
MOZ_ASSERT(srcbeg <= srcend);
for (const U* p = srcbeg; p < srcend; ++p, ++dst)
*dst = *p;
}
@ -391,13 +397,15 @@ class VectorBase : private AllocPolicy
friend class VectorBase;
T* cur_;
T* end_;
Range(T* cur, T* end) : cur_(cur), end_(end) {}
Range(T* cur, T* end) : cur_(cur), end_(end) {
MOZ_ASSERT(cur <= end);
}
public:
Range() {}
bool empty() const { return cur_ == end_; }
size_t remain() const { return end_ - cur_; }
T& front() const { return *cur_; }
size_t remain() const { return PointerRangeSize(cur_, end_); }
T& front() const { MOZ_ASSERT(!empty()); return *cur_; }
void popFront() { MOZ_ASSERT(!empty()); ++cur_; }
T popCopyFront() { MOZ_ASSERT(!empty()); return *cur_++; }
};