Fix many svace issues at dali-toolkit (integer overflow + etc)

This is a combination of 3 commits.

Let we remove many cases of dali-toolkit when we can be call 0u - 1u, which is undefined behavior.

Signed-off-by: Eunki, Hong <eunkiki.hong@samsung.com>
(Scene3D) Fix svace issue : convert uint32_t to std::streamoff + minor

Fix svace issue when we try to convert from 32bit unsigned integer
to (might) 64bit signed integer.

+

Fix the name of function collision issue

Signed-off-by: Eunki, Hong <eunkiki.hong@samsung.com>
Fix svace issue : Avoid to divide by zero cases

Change-Id: If11884693253cd86f89cb98704e93473166faca1
Signed-off-by: Eunki, Hong <eunkiki.hong@samsung.com>

diff --git a/dali-scene3d/internal/algorithm/navigation-mesh-impl.cpp b/dali-scene3d/internal/algorithm/navigation-mesh-impl.cpp
index 81b999d..c5f4ed1 100644 (file)
--- a/dali-scene3d/internal/algorithm/navigation-mesh-impl.cpp
+++ b/dali-scene3d/internal/algorithm/navigation-mesh-impl.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2024 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -185,7 +185,7 @@ bool NavigationMesh::FindFloor(const Dali::Vector3& position, Dali::Vector3& out
   return FindFloor(position, outPosition, faceIndex);
 }
 
-bool NavigationMesh::FindFloor(const Dali::Vector3& position, Dali::Vector3& outPosition, FaceIndex& faceIndex)
+bool NavigationMesh::FindFloor(const Dali::Vector3& position, Dali::Vector3& outPosition, FaceIndex& outFaceIndex)
 {
   [[maybe_unused]] auto newPos = PointSceneToLocal(Dali::Vector3(position));
 
@@ -217,8 +217,8 @@ bool NavigationMesh::FindFloor(const Dali::Vector3& position, Dali::Vector3& out
   std::sort(results.begin(), results.end(), [](const IntersectResult& lhs, const IntersectResult& rhs) { return lhs.distance < rhs.distance; });
 
   outPosition  = PointLocalToScene(results.front().point);
-  faceIndex    = results.front().faceIndex;
-  mCurrentFace = results.front().faceIndex;
+  outFaceIndex = results.front().faceIndex;
+  mCurrentFace = outFaceIndex;
 
   return true;
 }

diff --git a/dali-scene3d/internal/algorithm/navigation-mesh-impl.h b/dali-scene3d/internal/algorithm/navigation-mesh-impl.h
index 6a82787..e2ee0fc 100644 (file)
--- a/dali-scene3d/internal/algorithm/navigation-mesh-impl.h
+++ b/dali-scene3d/internal/algorithm/navigation-mesh-impl.h
@@ -2,7 +2,7 @@
 #define DALI_SCENE3D_INTERNAL_NAVIGATION_MESH_H
 
 /*
- * Copyright (c) 2023 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2024 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -115,7 +115,7 @@ public:
   /**
    * @copydoc Dali::Scene3D::Algorithm::NavigationMesh::FindFloor()
    */
-  bool FindFloor(const Dali::Vector3& position, Dali::Vector3& outPosition, FaceIndex& faceIndex);
+  bool FindFloor(const Dali::Vector3& position, Dali::Vector3& outPosition, FaceIndex& outFaceIndex);
 
   /**
    * @copydoc Dali::Scene3D::Algorithm::NavigationMesh::GetFace()

diff --git a/dali-scene3d/internal/loader/dli-loader-impl.cpp b/dali-scene3d/internal/loader/dli-loader-impl.cpp
index 1ed195d..6cdb1c4 100644 (file)
--- a/dali-scene3d/internal/loader/dli-loader-impl.cpp
+++ b/dali-scene3d/internal/loader/dli-loader-impl.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2024 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -1585,7 +1585,7 @@ void DliLoaderImpl::Impl::ParseAnimations(const TreeNode* tnAnimations, LoadPara
           ReadInt(tnKeyFramesBin->GetChild("byteOffset"), byteOffset);
           DALI_ASSERT_ALWAYS(byteOffset >= 0);
 
-          binAniFile.seekg(byteOffset, std::ios::beg);
+          binAniFile.seekg(static_cast<std::streamoff>(byteOffset), std::ios::beg);
 
           int numKeys = 0;
           ReadInt(tnKeyFramesBin->GetChild("numKeys"), numKeys);

diff --git a/dali-scene3d/internal/loader/gltf2-util.cpp b/dali-scene3d/internal/loader/gltf2-util.cpp
index 7979786..6e572b7 100644 (file)
--- a/dali-scene3d/internal/loader/gltf2-util.cpp
+++ b/dali-scene3d/internal/loader/gltf2-util.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2024 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -602,7 +602,7 @@ TextureDefinition ConvertTextureInfo(const gltf2::TextureInfo& textureInfo, Conv
     {
       auto& stream = context.mOutput.mResources.mBuffers[bufferIndex].GetBufferStream();
       stream.clear();
-      stream.seekg(textureInfo.mTexture->mSource->mBufferView->mByteOffset, stream.beg);
+      stream.seekg(static_cast<std::streamoff>(static_cast<std::size_t>(textureInfo.mTexture->mSource->mBufferView->mByteOffset)), stream.beg);
       std::vector<uint8_t> dataBuffer;
       dataBuffer.resize(textureInfo.mTexture->mSource->mBufferView->mByteLength);
       stream.read(reinterpret_cast<char*>(dataBuffer.data()), static_cast<std::streamsize>(static_cast<size_t>(textureInfo.mTexture->mSource->mBufferView->mByteLength)));
@@ -1304,7 +1304,7 @@ void LoadDataFromAccessor(ConversionContext& context, uint32_t bufferIndex, Vect
   }
   auto& stream = buffer.GetBufferStream();
   stream.clear();
-  stream.seekg(offset, stream.beg);
+  stream.seekg(static_cast<std::streamoff>(static_cast<std::size_t>(offset)), stream.beg);
   stream.read(reinterpret_cast<char*>(dataBuffer.Begin()), static_cast<std::streamsize>(static_cast<size_t>(size)));
 }
 
@@ -1514,7 +1514,7 @@ void ProcessSkins(const gltf2::Document& document, ConversionContext& context)
         DALI_LOG_ERROR("Failed to load from stream\n");
       }
       mStream.clear();
-      mStream.seekg(accessor.mBufferView->mByteOffset + accessor.mByteOffset, mStream.beg);
+      mStream.seekg(static_cast<std::streamoff>(static_cast<std::size_t>(accessor.mBufferView->mByteOffset + accessor.mByteOffset)), mStream.beg);
     }
 
     virtual void Provide(Matrix& inverseBindMatrix) override

diff --git a/dali-scene3d/public-api/algorithm/navigation-mesh.cpp b/dali-scene3d/public-api/algorithm/navigation-mesh.cpp
index 4aff076..1d7f90c 100644 (file)
--- a/dali-scene3d/public-api/algorithm/navigation-mesh.cpp
+++ b/dali-scene3d/public-api/algorithm/navigation-mesh.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2024 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -46,9 +46,9 @@ NavigationMesh::~NavigationMesh() = default;
   return mImpl->GetVertexCount();
 }
 
-bool NavigationMesh::FindFloor(const Dali::Vector3& position, Dali::Vector3& outPosition, FaceIndex& faceIndex)
+bool NavigationMesh::FindFloor(const Dali::Vector3& position, Dali::Vector3& outPosition, FaceIndex& outFaceIndex)
 {
-  return mImpl->FindFloor(position, outPosition, faceIndex);
+  return mImpl->FindFloor(position, outPosition, outFaceIndex);
 }
 
 bool NavigationMesh::FindFloorForFace(const Dali::Vector3& position, FaceIndex faceIndex, bool dontCheckNeighbours, Dali::Vector3& outPosition)

diff --git a/dali-scene3d/public-api/algorithm/navigation-mesh.h b/dali-scene3d/public-api/algorithm/navigation-mesh.h
index f856155..34088dd 100644 (file)
--- a/dali-scene3d/public-api/algorithm/navigation-mesh.h
+++ b/dali-scene3d/public-api/algorithm/navigation-mesh.h
@@ -2,7 +2,7 @@
 #define DALI_SCENE3D_NAVIGATION_MESH_H
 
 /*
- * Copyright (c) 2023 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2024 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -152,12 +152,12 @@ public:
   /**
    * @brief Looks for the floor under specified position
    * @param[in] position Position to investigate
-   * @param[in] outPosition Position on the floor in found
-   * @param[out] faceIndex Index of NavigationMesh face associated with floor
+   * @param[out] outPosition Position on the floor in found
+   * @param[out] outFaceIndex Index of NavigationMesh face associated with floor
    *
    * @return True if floor has been found, False otherwise
    */
-  bool FindFloor(const Dali::Vector3& position, Dali::Vector3& outPosition, FaceIndex& faceIndex);
+  bool FindFloor(const Dali::Vector3& position, Dali::Vector3& outPosition, FaceIndex& outFaceIndex);
 
   /**
    * @brief Looks for a floor starting from specified face

diff --git a/dali-scene3d/public-api/loader/ktx-loader.cpp b/dali-scene3d/public-api/loader/ktx-loader.cpp
index 010dc89..4d33ef5 100644 (file)
--- a/dali-scene3d/public-api/loader/ktx-loader.cpp
+++ b/dali-scene3d/public-api/loader/ktx-loader.cpp
@@ -206,7 +206,7 @@ bool LoadKtxData(const std::string& path, EnvironmentMapData& environmentMapData
   }
 
   // Skip the key-values:
-  if(fp.seekg(header.bytesOfKeyValueData, fp.cur).good() == false)
+  if(fp.seekg(static_cast<std::streamoff>(static_cast<std::size_t>(header.bytesOfKeyValueData)), fp.cur).good() == false)
   {
     return false;
   }

diff --git a/dali-scene3d/public-api/loader/mesh-definition.cpp b/dali-scene3d/public-api/loader/mesh-definition.cpp
index 4fc60e4..6728790 100644 (file)
--- a/dali-scene3d/public-api/loader/mesh-definition.cpp
+++ b/dali-scene3d/public-api/loader/mesh-definition.cpp
@@ -101,7 +101,7 @@ const char* QUAD("quad");
 bool ReadBlob(const MeshDefinition::Blob& descriptor, std::istream& source, uint8_t* target)
 {
   source.clear();
-  if(!source.seekg(descriptor.mOffset, std::istream::beg))
+  if(!source.seekg(static_cast<std::streamoff>(static_cast<std::size_t>(descriptor.mOffset)), std::istream::beg))
   {
     return false;
   }
@@ -122,7 +122,7 @@ bool ReadBlob(const MeshDefinition::Blob& descriptor, std::istream& source, uint
       {
         readSize += descriptor.mStride;
         target += descriptor.mElementSizeHint;
-        source.seekg(diff, std::istream::cur);
+        source.seekg(static_cast<std::streamoff>(static_cast<std::size_t>(diff)), std::istream::cur);
       }
       return readSize == totalSize;
     }

diff --git a/dali-toolkit/internal/builder/replacement.cpp b/dali-toolkit/internal/builder/replacement.cpp
index 5825da5..4d59ee7 100644 (file)
--- a/dali-toolkit/internal/builder/replacement.cpp
+++ b/dali-toolkit/internal/builder/replacement.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2024 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -112,6 +112,8 @@ bool ResolvePartialReplacement(const std::string& initialValue, Property::Value&
     }
     else
     {
+      DALI_ASSERT_ALWAYS((startPos > 0u && size > 0u) && "Replacement keyword getter have some problem!\n");
+
       const std::string str(initialValue.substr(startPos, size));
 
       Property::Value* value = FindReplacement(str, overrideMap, defaultMap);

diff --git a/dali-toolkit/internal/controls/bubble-effect/bubble-emitter-impl.cpp b/dali-toolkit/internal/controls/bubble-effect/bubble-emitter-impl.cpp
index 781a1e0..12b7a13 100644 (file)
--- a/dali-toolkit/internal/controls/bubble-effect/bubble-emitter-impl.cpp
+++ b/dali-toolkit/internal/controls/bubble-effect/bubble-emitter-impl.cpp
@@ -351,11 +351,14 @@ void BubbleEmitter::SetBubbleParameter(BubbleRenderer& bubbleRenderer, unsigned
 {
   Vector2 dir(direction);
 
-  int halfRange = displacement.x / 2;
+  int rangeX = std::max(static_cast<int>(displacement.x), 1); // To avoid divide by zero issue.
+  int rangeY = std::max(static_cast<int>(displacement.y), 1); // To avoid divide by zero issue.
+
+  int halfRangeX = displacement.x / 2;
   // for the y coordinate, always negative, so bubbles always go upwards
-  Vector2 randomVec(rand_r(&mRandomSeed) % static_cast<int>(displacement.x) - halfRange, -rand_r(&mRandomSeed) % static_cast<int>(displacement.y));
+  Vector2 randomVec(rand_r(&mRandomSeed) % rangeX - halfRangeX, -rand_r(&mRandomSeed) % rangeY);
   dir.Normalize();
-  randomVec.x -= dir.x * halfRange;
+  randomVec.x -= dir.x * halfRangeX;
   randomVec.y *= 1.0f - fabsf(dir.x) * 0.33f;
 
   if(randomVec.y > 0.0f)

diff --git a/dali-toolkit/internal/controls/bubble-effect/bubble-renderer.cpp b/dali-toolkit/internal/controls/bubble-effect/bubble-renderer.cpp
index 73c636d..33c5eef 100644 (file)
--- a/dali-toolkit/internal/controls/bubble-effect/bubble-renderer.cpp
+++ b/dali-toolkit/internal/controls/bubble-effect/bubble-renderer.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2024 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -59,7 +59,7 @@ void BubbleRenderer::Initialize(unsigned int numberOfBubble, const Vector2& move
   mIndexInvertedMovementArea = mRenderer.RegisterUniqueProperty("uInvertedMovementArea", Vector2(1.f, 1.f) / movementArea);
 
   mIndicesOffset.resize(9);
-  int offset = movementArea.Length() / 10.f;
+  int offset = std::max(static_cast<int>(movementArea.Length() / 10.f), 1); // To avoid divide by zero issue.
 
   uint32_t seed = static_cast<uint32_t>(time(NULL));
 

diff --git a/dali-toolkit/internal/controls/scene3d-view/gltf-loader.cpp b/dali-toolkit/internal/controls/scene3d-view/gltf-loader.cpp
index 66f7677..b1cd70d 100644 (file)
--- a/dali-toolkit/internal/controls/scene3d-view/gltf-loader.cpp
+++ b/dali-toolkit/internal/controls/scene3d-view/gltf-loader.cpp
@@ -38,6 +38,8 @@ namespace Gltf
 {
 namespace
 {
+constexpr float MIN_DURATION_SECONDS = 1e-2f;
+
 // Utility functions
 const TreeNode* Tidx(const TreeNode* node, uint32_t index)
 {
@@ -434,7 +436,7 @@ float LoadKeyFrames(const AnimationSamplerInfo& currentSampler, const Property::
   LoadDataFromAccessor<T>(currentSampler.output, outputBufferData, path, accessorArray, bufferViewArray, bufferArray);
 
   uint32_t keyframeNum     = inputBufferData.Size();
-  float    lengthAnimation = inputBufferData[inputBufferData.Size() - 1];
+  float    lengthAnimation = std::max((inputBufferData.Size() > 0u ? inputBufferData[inputBufferData.Size() - 1] : MIN_DURATION_SECONDS), MIN_DURATION_SECONDS);
   for(uint32_t i = 0; i < keyframeNum; i++)
   {
     if(propIndex == Dali::Actor::Property::ORIENTATION)

diff --git a/dali-toolkit/internal/text/bounded-paragraph-helper-functions.cpp b/dali-toolkit/internal/text/bounded-paragraph-helper-functions.cpp
index 7b207f4..219f7bf 100644 (file)
--- a/dali-toolkit/internal/text/bounded-paragraph-helper-functions.cpp
+++ b/dali-toolkit/internal/text/bounded-paragraph-helper-functions.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2024 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -167,6 +167,10 @@ void MergeBoundedParagraphRunsWhenRemoveCharacters(const Vector<Character>&
       boundedParagraphRuns.Remove(paragraphToDelete);
 
       numberOfRuns--;
+      if(lastRunIndexToUpdate == 0u)
+      {
+        break;
+      }
       lastRunIndexToUpdate--;
 
       continue;

diff --git a/dali-toolkit/internal/text/controller/text-controller-impl.cpp b/dali-toolkit/internal/text/controller/text-controller-impl.cpp
index 4336221..f70d8af 100644 (file)
--- a/dali-toolkit/internal/text/controller/text-controller-impl.cpp
+++ b/dali-toolkit/internal/text/controller/text-controller-impl.cpp
@@ -701,7 +701,7 @@ void Controller::Impl::CalculateTextUpdateIndices(Length& numberOfCharacters)
       mTextUpdateInfo.mRequestedNumberOfCharacters = mTextUpdateInfo.mNumberOfCharactersToAdd - mTextUpdateInfo.mNumberOfCharactersToRemove;
 
       mTextUpdateInfo.mStartGlyphIndex = mModel->mVisualModel->mGlyphs.Count();
-      mTextUpdateInfo.mStartLineIndex  = mModel->mVisualModel->mLines.Count() - 1u;
+      mTextUpdateInfo.mStartLineIndex  = (mModel->mVisualModel->mLines.Count() > 0u) ? mModel->mVisualModel->mLines.Count() - 1u : 0u;
 
       // Nothing else to do;
       return;

diff --git a/dali-toolkit/internal/text/layouts/layout-engine.cpp b/dali-toolkit/internal/text/layouts/layout-engine.cpp
index 7bbf2cc..57f4d6c 100644 (file)
--- a/dali-toolkit/internal/text/layouts/layout-engine.cpp
+++ b/dali-toolkit/internal/text/layouts/layout-engine.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2024 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -1478,6 +1478,12 @@ struct Engine::Impl
   {
     const Vector<GlyphInfo>& glyphs = layoutParameters.textModel->mVisualModel->mGlyphs;
 
+    if(glyphs.Size() == 0u)
+    {
+      // Do nothing.
+      return;
+    }
+
     // Need to add a new line with no characters but with height to increase the layoutSize.height
     const GlyphInfo& glyphInfo = glyphs[glyphs.Count() - 1u];
 

diff --git a/dali-toolkit/internal/text/rendering/atlas/text-atlas-renderer.cpp b/dali-toolkit/internal/text/rendering/atlas/text-atlas-renderer.cpp
index 5788d33..5ccaad0 100644 (file)
--- a/dali-toolkit/internal/text/rendering/atlas/text-atlas-renderer.cpp
+++ b/dali-toolkit/internal/text/rendering/atlas/text-atlas-renderer.cpp
@@ -559,7 +559,8 @@ struct AtlasRenderer::Impl
     {
       GlyphInfo glyph;
       bool      addHyphen = ((hyphenIndex < hyphensCount) && hyphenIndices && ((i + startIndexOfGlyphs) == hyphenIndices[hyphenIndex]));
-      if(addHyphen && hyphens)
+      // TODO : Shouldn't we have to control here when i == 0 cases?
+      if(addHyphen && hyphens && i > 0u)
       {
         glyph = hyphens[hyphenIndex];
         i--;

diff --git a/dali-toolkit/internal/text/rendering/text-typesetter.cpp b/dali-toolkit/internal/text/rendering/text-typesetter.cpp
index fe164f6..1c31199 100644 (file)
--- a/dali-toolkit/internal/text/rendering/text-typesetter.cpp
+++ b/dali-toolkit/internal/text/rendering/text-typesetter.cpp
@@ -163,7 +163,7 @@ void TypesetGlyph(GlyphData& __restrict__ data,
   // Whether the given glyph is a color one.
   const bool     isColorGlyph    = data.glyphBitmap.isColorEmoji || data.glyphBitmap.isColorBitmap;
   const uint32_t glyphPixelSize  = Pixel::GetBytesPerPixel(data.glyphBitmap.format);
-  const uint32_t glyphAlphaIndex = glyphPixelSize - 1u;
+  const uint32_t glyphAlphaIndex = (glyphPixelSize > 0u) ? glyphPixelSize - 1u : 0u;
 
   // Determinate iterator range.
   const int32_t lineIndexRangeMin = std::max(0, -yOffset);

diff --git a/dali-toolkit/internal/visuals/gradient/gradient.cpp b/dali-toolkit/internal/visuals/gradient/gradient.cpp
index 34da8a6..e96cf32 100644 (file)
--- a/dali-toolkit/internal/visuals/gradient/gradient.cpp
+++ b/dali-toolkit/internal/visuals/gradient/gradient.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2024 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -91,7 +91,8 @@ Dali::Texture Gradient::GenerateLookupTexture()
 {
   std::sort(mGradientStops.Begin(), mGradientStops.End());
 
-  unsigned int numStops = mGradientStops.Count();
+  uint32_t numStops = mGradientStops.Count();
+  DALI_ASSERT_ALWAYS(numStops > 0u && "The number of gradient stop should not be zero!");
 
   /**
    * If the stops have not covered the whole zero to one range,
@@ -179,8 +180,10 @@ Dali::Texture Gradient::GenerateLookupTexture()
 
 unsigned int Gradient::EstimateTextureResolution()
 {
-  float minInterval = 1.0;
-  for(unsigned int i = 0, numStops = mGradientStops.Count(); i < numStops - 1u; i++)
+  float          minInterval = 1.0;
+  const uint32_t numStops    = mGradientStops.Count();
+  DALI_ASSERT_ALWAYS(numStops > 0u && "The number of gradient stop should not be zero!");
+  for(uint32_t i = 0; i < numStops - 1u; i++)
   {
     float interval = mGradientStops[i + 1].mOffset - mGradientStops[i].mOffset;
     minInterval    = interval > minInterval ? minInterval : interval;