diff --git a/Recast/Include/RecastAlloc.h b/Recast/Include/RecastAlloc.h
index a048e28..a3c5fbd 100644
--- a/Recast/Include/RecastAlloc.h
+++ b/Recast/Include/RecastAlloc.h
@@ -73,7 +73,7 @@ typedef intptr_t rcSizeType;
 #define RC_SIZE_MAX INTPTR_MAX
 
 /// Macros to hint to the compiler about the likeliest branch. Please add a benchmark that demonstrates a performance
-/// improvement before intrudcing use cases.
+/// improvement before introducing use cases.
 #if defined(__GNUC__) || defined(__clang__)
 #define rcLikely(x) __builtin_expect((x), true)
 #define rcUnlikely(x) __builtin_expect((x), false)
@@ -116,7 +116,8 @@ class rcVectorBase {
 	rcVectorBase(const T* begin, const T* end) : m_size(0), m_cap(0), m_data(0) { assign(begin, end); }
 	~rcVectorBase() { destroy_range(0, m_size); rcFree(m_data); }
 
-	void reserve(rcSizeType size);
+	// Unlike in std::vector, we return a bool to indicate whether the alloc was successful.
+	bool reserve(rcSizeType size);
 
 	void assign(rcSizeType count, const T& value) { clear(); resize(count, value); }
 	void assign(const T* begin, const T* end);
@@ -155,21 +156,27 @@ class rcVectorBase {
 };
 
 template<typename T, rcAllocHint H>
-void rcVectorBase<T, H>::reserve(rcSizeType count) {
+bool rcVectorBase<T, H>::reserve(rcSizeType count) {
 	if (count <= m_cap) {
-		return;
+		return true;
 	}
 	T* new_data = allocate_and_copy(count);
+	if (!new_data) {
+	  return false;
+	}
 	destroy_range(0, m_size);
 	rcFree(m_data);
 	m_data = new_data;
 	m_cap = count;
+	return true;
 }
 template <typename T, rcAllocHint H>
 T* rcVectorBase<T, H>::allocate_and_copy(rcSizeType size) {
 	rcAssert(RC_SIZE_MAX / sizeof(T) >= size);
 	T* new_data = static_cast<T*>(rcAlloc(sizeof(T) * size, H));
-	copy_range(new_data, m_data, m_data + m_size);
+	if (new_data) {
+		copy_range(new_data, m_data, m_data + m_size);
+	}
 	return new_data;
 }
 template <typename T, rcAllocHint H>
diff --git a/Recast/Source/RecastRegion.cpp b/Recast/Source/RecastRegion.cpp
index 2b721a7..e1fc0ee 100644
--- a/Recast/Source/RecastRegion.cpp
+++ b/Recast/Source/RecastRegion.cpp
@@ -25,7 +25,6 @@
 #include "Recast.h"
 #include "RecastAlloc.h"
 #include "RecastAssert.h"
-#include <new>
 
 namespace
 {
@@ -796,16 +795,15 @@ static bool mergeAndFilterRegions(rcContext* ctx, int minRegionArea, int mergeRe
 	const int h = chf.height;
 	
 	const int nreg = maxRegionId+1;
-	rcRegion* regions = (rcRegion*)rcAlloc(sizeof(rcRegion)*nreg, RC_ALLOC_TEMP);
-	if (!regions)
-	{
+	rcTempVector<rcRegion> regions;
+	if (!regions.reserve(nreg)) {
 		ctx->log(RC_LOG_ERROR, "mergeAndFilterRegions: Out of memory 'regions' (%d).", nreg);
 		return false;
 	}
 
 	// Construct regions
 	for (int i = 0; i < nreg; ++i)
-		new(&regions[i]) rcRegion((unsigned short)i);
+		regions.push_back(rcRegion((unsigned short) i));
 	
 	// Find edge of a region and find connections around the contour.
 	for (int y = 0; y < h; ++y)
@@ -1031,11 +1029,6 @@ static bool mergeAndFilterRegions(rcContext* ctx, int minRegionArea, int mergeRe
 		if (regions[i].overlap)
 			overlaps.push(regions[i].id);
 
-	for (int i = 0; i < nreg; ++i)
-		regions[i].~rcRegion();
-	rcFree(regions);
-	
-	
 	return true;
 }
 
@@ -1057,16 +1050,15 @@ static bool mergeAndFilterLayerRegions(rcContext* ctx, int minRegionArea,
 	const int h = chf.height;
 	
 	const int nreg = maxRegionId+1;
-	rcRegion* regions = (rcRegion*)rcAlloc(sizeof(rcRegion)*nreg, RC_ALLOC_TEMP);
-	if (!regions)
-	{
+	rcTempVector<rcRegion> regions;
+	
+	// Construct regions
+	if (!regions.reserve(nreg)) {
 		ctx->log(RC_LOG_ERROR, "mergeAndFilterLayerRegions: Out of memory 'regions' (%d).", nreg);
 		return false;
 	}
-	
-	// Construct regions
 	for (int i = 0; i < nreg; ++i)
-		new(&regions[i]) rcRegion((unsigned short)i);
+		regions.push_back(rcRegion((unsigned short) i));
 	
 	// Find region neighbours and overlapping regions.
 	rcIntArray lregs(32);
@@ -1244,10 +1236,6 @@ static bool mergeAndFilterLayerRegions(rcContext* ctx, int minRegionArea,
 			srcReg[i] = regions[srcReg[i]].id;
 	}
 	
-	for (int i = 0; i < nreg; ++i)
-		regions[i].~rcRegion();
-	rcFree(regions);
-	
 	return true;
 }