Merge branch 'master' into fix-mingw-priumax

CMakeLists.txt

@@ -35,6 +35,7 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #----------------------------------------------------------------------
 SET(CMAKE_POLICY_DEFAULT_CMP0074 NEW)
+SET(CMAKE_POLICY_DEFAULT_CMP0092 NEW)
 
 CMAKE_MINIMUM_REQUIRED( VERSION 3.0 )
 
@@ -257,7 +258,11 @@ IF ((CMAKE_C_COMPILER_ID MATCHES "GNU") AND NOT CMAKE_COMPILER_IS_MINGW)
   SET(LIBSTDC++_LIBRARIES -lstdc++)
 ELSEIF(MSVC)
   # enable multi-core compilation with MSVC
+  IF( "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang" ) # clang-cl
+    ADD_COMPILE_OPTIONS(/bigobj /W4 /WX )
+  ELSE() # msvc
     ADD_COMPILE_OPTIONS(/MP /bigobj /W4 /WX)
+  ENDIF()
   # disable "elements of array '' will be default initialized" warning on MSVC2013
   IF(MSVC12)
     ADD_COMPILE_OPTIONS(/wd4351)

Readme.md

@@ -4,8 +4,6 @@ A library to import and export various 3d-model-formats including scene-post-pro
 ### Current project status ###
 [![Financial Contributors on Open Collective](https://opencollective.com/assimp/all/badge.svg?label=financial+contributors)](https://opencollective.com/assimp) 
 ![C/C++ CI](https://github.com/assimp/assimp/workflows/C/C++%20CI/badge.svg)
-[![Linux Build Status](https://travis-ci.org/assimp/assimp.svg)](https://travis-ci.org/assimp/assimp)
-[![Windows Build Status](https://ci.appveyor.com/api/projects/status/tmo433wax6u6cjp4?svg=true)](https://ci.appveyor.com/project/kimkulling/assimp)
 <a href="https://scan.coverity.com/projects/5607">
   <img alt="Coverity Scan Build Status"
        src="https://scan.coverity.com/projects/5607/badge.svg"/>

code/AssetLib/3DS/3DSHelper.h

@@ -321,9 +321,10 @@ public:
 struct Face : public FaceWithSmoothingGroup {
 };
 
-#if _MSC_VER > 1920
+#ifdef _MSC_VER
+#pragma warning(push)
 #pragma warning(disable : 4315)
-#endif
+#endif // _MSC_VER
 
 // ---------------------------------------------------------------------------
 /** Helper structure representing a texture */
@@ -412,6 +413,10 @@ struct Texture {
 
 #include <assimp/Compiler/poppack1.h>
 
+#ifdef _MSC_VER
+#pragma warning(pop)
+#endif // _MSC_VER
+
 // ---------------------------------------------------------------------------
 /** Helper structure representing a 3ds material */
 struct Material {

code/AssetLib/AC/ACLoader.cpp

@@ -471,32 +471,33 @@ aiNode *AC3DImporter::ConvertObjectSection(Object &object,
                     ++node->mNumMeshes;
                 }
 
-                switch ((*it).flags & 0xf) {
+                switch ((*it).GetType()) {
                     // closed line
-                case 0x1:
+                case Surface::ClosedLine:
                     needMat[idx].first += (unsigned int)(*it).entries.size();
                     needMat[idx].second += (unsigned int)(*it).entries.size() << 1u;
                     break;
 
                     // unclosed line
-                case 0x2:
+                case Surface::OpenLine:
                     needMat[idx].first += (unsigned int)(*it).entries.size() - 1;
                     needMat[idx].second += ((unsigned int)(*it).entries.size() - 1) << 1u;
                     break;
 
                     // triangle strip
-                case 0x4:
+                case Surface::TriangleStrip:
                     needMat[idx].first += (unsigned int)(*it).entries.size() - 2;
                     needMat[idx].second += ((unsigned int)(*it).entries.size() - 2) * 3;
                     break;
 
-                    // 0 == polygon, else unknown
                 default:
-                    if ((*it).flags & 0xf) {
+                    // Coerce unknowns to a polygon and warn
-                        ASSIMP_LOG_WARN("AC3D: The type flag of a surface is unknown");
+                    ASSIMP_LOG_WARN_F("AC3D: The type flag of a surface is unknown: ", (*it).flags);
-                        (*it).flags &= ~(0xf);
+                    (*it).flags &= ~(Surface::Mask);
-                    }
+                    // fallthrough
 
+                    // polygon
+                case Surface::Polygon:
                     // the number of faces increments by one, the number
                     // of vertices by surface.numref.
                     needMat[idx].first++;
@@ -552,8 +553,8 @@ aiNode *AC3DImporter::ConvertObjectSection(Object &object,
                         const Surface &src = *it;
 
                         // closed polygon
-                        unsigned int type = (*it).flags & 0xf;
+                        uint8_t type = (*it).GetType();
-                        if (!type) {
+                        if (type == Surface::Polygon) {
                             aiFace &face = *faces++;
                             face.mNumIndices = (unsigned int)src.entries.size();
                             if (0 != face.mNumIndices) {
@@ -576,7 +577,7 @@ aiNode *AC3DImporter::ConvertObjectSection(Object &object,
                                     }
                                 }
                             }
-                        } else if (type == 0x4) {
+                        } else if (type == Surface::TriangleStrip) {
                             for (unsigned int i = 0; i < (unsigned int)src.entries.size() - 2; ++i) {
                                 const Surface::SurfaceEntry &entry1 = src.entries[i];
                                 const Surface::SurfaceEntry &entry2 = src.entries[i + 1];
@@ -640,7 +641,7 @@ aiNode *AC3DImporter::ConvertObjectSection(Object &object,
 
                             // either a closed or an unclosed line
                             unsigned int tmp = (unsigned int)(*it).entries.size();
-                            if (0x2 == type) --tmp;
+                            if (Surface::OpenLine == type) --tmp;
                             for (unsigned int m = 0; m < tmp; ++m) {
                                 aiFace &face = *faces++;
 
@@ -663,7 +664,7 @@ aiNode *AC3DImporter::ConvertObjectSection(Object &object,
                                     ++uv;
                                 }
 
-                                if (0x1 == type && tmp - 1 == m) {
+                                if (Surface::ClosedLine == type && tmp - 1 == m) {
                                     // if this is a closed line repeat its beginning now
                                     it2 = (*it).entries.begin();
                                 } else

code/AssetLib/AC/ACLoader.h

@@ -69,7 +69,10 @@ public:
     // Represents an AC3D material
     struct Material {
         Material() :
-                rgb(0.6f, 0.6f, 0.6f), spec(1.f, 1.f, 1.f), shin(0.f), trans(0.f) {}
+                rgb(0.6f, 0.6f, 0.6f),
+                spec(1.f, 1.f, 1.f),
+                shin(0.f),
+                trans(0.f) {}
 
         // base color of the material
         aiColor3D rgb;
@@ -96,18 +99,43 @@ public:
     // Represents an AC3D surface
     struct Surface {
         Surface() :
-                mat(0), flags(0) {}
+                mat(0),
+                flags(0) {}
 
         unsigned int mat, flags;
 
         typedef std::pair<unsigned int, aiVector2D> SurfaceEntry;
         std::vector<SurfaceEntry> entries;
+
+        // Type is low nibble of flags
+        enum Type : uint8_t {
+            Polygon = 0x0,
+            ClosedLine = 0x1,
+            OpenLine = 0x2,
+            TriangleStrip = 0x4, // ACC extension (TORCS and Speed Dreams)
+
+            Mask = 0xf,
+        };
+
+        inline constexpr uint8_t GetType() const { return (flags & Mask); }
     };
 
     // Represents an AC3D object
     struct Object {
         Object() :
-                type(World), name(""), children(), texture(""), texRepeat(1.f, 1.f), texOffset(0.0f, 0.0f), rotation(), translation(), vertices(), surfaces(), numRefs(0), subDiv(0), crease() {}
+                type(World),
+                name(""),
+                children(),
+                texture(""),
+                texRepeat(1.f, 1.f),
+                texOffset(0.0f, 0.0f),
+                rotation(),
+                translation(),
+                vertices(),
+                surfaces(),
+                numRefs(0),
+                subDiv(0),
+                crease() {}
 
         // Type description
         enum Type {

code/AssetLib/Blender/BlenderTessellator.cpp

@@ -386,7 +386,14 @@ void BlenderTessellatorP2T::ReferencePoints( std::vector< Blender::PointP2T >& p
 // ------------------------------------------------------------------------------------------------
 inline PointP2T& BlenderTessellatorP2T::GetActualPointStructure( p2t::Point& point ) const
 {
+#if defined __clang__
+#    pragma clang diagnostic push
+#    pragma clang diagnostic ignored "-Winvalid-offsetof"
+#endif // __clang__
     unsigned int pointOffset = offsetof( PointP2T, point2D );
+#if defined __clang__
+#    pragma clang diagnostic pop
+#endif
     PointP2T& pointStruct = *reinterpret_cast< PointP2T* >( reinterpret_cast< char* >( &point ) - pointOffset );
     if ( pointStruct.magic != static_cast<int>( BLEND_TESS_MAGIC ) )
     {
@@ -394,7 +401,6 @@ inline PointP2T& BlenderTessellatorP2T::GetActualPointStructure( p2t::Point& poi
     }
     return pointStruct;
 }
-
 // ------------------------------------------------------------------------------------------------
 void BlenderTessellatorP2T::MakeFacesFromTriangles( std::vector< p2t::Triangle* >& triangles ) const
 {

code/AssetLib/IFC/IFCReaderGen_2x3.h

@@ -45,9 +45,10 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "AssetLib/Step/STEPFile.h"
 
-#if _MSC_VER > 1920
+#ifdef _MSC_VER
+#    pragma warning(push)
 #    pragma warning( disable : 4512 )
-#endif // _WIN32
+#endif // _MSC_VER
 
 namespace Assimp {
 namespace IFC {
@@ -4372,4 +4373,8 @@ namespace STEP {
 } //! STEP
 } //! Assimp
 
+#ifdef _MSC_VER
+#    pragma warning(pop)
+#endif // _MSC_VER
+
 #endif // INCLUDED_IFC_READER_GEN_H

code/AssetLib/M3D/m3d.h

@@ -84,7 +84,7 @@ typedef uint16_t M3D_INDEX;
 #ifndef M3D_BONEMAXLEVEL
 #define M3D_BONEMAXLEVEL 8
 #endif
-#ifndef _MSC_VER
+#if !defined(_MSC_VER) || defined(__clang__)
 #ifndef _inline
 #define _inline __inline__
 #endif
@@ -101,13 +101,13 @@ typedef uint16_t M3D_INDEX;
 #define _register
 #endif
 
-#if _MSC_VER > 1920
+#if _MSC_VER > 1920 && !defined(__clang__)
 #    pragma warning(push)
 #    pragma warning(disable : 4100 4127 4189 4505 4244 4403  4701 4703)
 #    if (_MSC_VER > 1800 )
 #        pragma warning(disable : 5573 5744)
 #    endif
-#endif // _WIN32
+#endif // _MSC_VER
 
 /*** File format structures ***/
 
@@ -5889,7 +5889,7 @@ unsigned char *m3d_save(m3d_t *model, int quality, int flags, unsigned int *size
 }
 #endif
 
-#endif
+#endif /* M3D_IMPLEMENTATION */
 
 #ifdef __cplusplus
 }
@@ -6147,11 +6147,11 @@ public:
 #endif /* impl */
 } // namespace M3D
 
-#ifdef _WIN32
+#endif /* M3D_CPPWRAPPER */
-#    pragma warning(pop)
-#endif // _WIN32
 
-#endif
+#ifdef _MSC_VER
+#    pragma warning(pop)
+#endif /* _MSC_VER */
 
 #endif /* __cplusplus */
 

code/AssetLib/MDL/HalfLife/HL1MDLLoader.cpp

@@ -68,9 +68,9 @@ namespace Assimp {
 namespace MDL {
 namespace HalfLife {
 
-#if _MSC_VER > 1920
+#ifdef _MSC_VER
 #    pragma warning(disable : 4706)
-#endif // _WIN32
+#endif // _MSC_VER
 
 // ------------------------------------------------------------------------------------------------
 HL1MDLLoader::HL1MDLLoader(

code/AssetLib/Step/STEPFile.h

@@ -54,10 +54,10 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <assimp/DefaultLogger.hpp>
 
-#if _MSC_VER > 1920
+#ifdef _MSC_VER
 #    pragma warning(push)
 #    pragma warning(disable : 4127 4456 4245 4512 )
-#endif // _WIN32 
+#endif // _MSC_VER 
 
 //
 #if _MSC_VER > 1500 || (defined __GNUC___)
@@ -130,8 +130,8 @@ namespace STEP {
      *  coupled with a line number. */
 // -------------------------------------------------------------------------------
 struct SyntaxError : DeadlyImportError {
-    enum {
+    enum : uint64_t {
-        LINE_NOT_SPECIFIED = 0xffffffffffffffffLL
+        LINE_NOT_SPECIFIED = 0xfffffffffffffffLL
     };
 
     SyntaxError(const std::string &s, uint64_t line = LINE_NOT_SPECIFIED);
@@ -143,8 +143,8 @@ struct SyntaxError : DeadlyImportError {
      *  It is typically coupled with both an entity id and a line number.*/
 // -------------------------------------------------------------------------------
 struct TypeError : DeadlyImportError {
-    enum {
+    enum : uint64_t {
-        ENTITY_NOT_SPECIFIED = 0xffffffffffffffffLL,
+        ENTITY_NOT_SPECIFIED = 0xffffffffffffffffUL,
         ENTITY_NOT_SPECIFIED_32 = 0x00000000ffffffff
     };
 
@@ -960,9 +960,9 @@ private:
     const EXPRESS::ConversionSchema *schema;
 };
 
-#if _MSC_VER > 1920
+#ifdef _MSC_VER
 #pragma warning(pop)
-#endif // _WIN32
+#endif // _MSC_VER
 
 } // namespace STEP
 

code/AssetLib/glTF2/glTF2Importer.cpp

@@ -298,25 +298,37 @@ void glTF2Importer::ImportMaterials(glTF2::Asset &r) {
 	}
 }
 
-static inline void SetFace(aiFace &face, int a) {
+static inline void SetFaceAndAdvance1(aiFace*& face, unsigned int numVertices, unsigned int a) {
-	face.mNumIndices = 1;
+	if (a >= numVertices) {
-	face.mIndices = new unsigned int[1];
+		return;
-	face.mIndices[0] = a;
+	}
+	face->mNumIndices = 1;
+	face->mIndices = new unsigned int[1];
+	face->mIndices[0] = a;
+	++face;
 }
 
-static inline void SetFace(aiFace &face, int a, int b) {
+static inline void SetFaceAndAdvance2(aiFace*& face, unsigned int numVertices, unsigned int a, unsigned int b) {
-	face.mNumIndices = 2;
+	if ((a >= numVertices) || (b >= numVertices)) {
-	face.mIndices = new unsigned int[2];
+		return;
-	face.mIndices[0] = a;
+	}
-	face.mIndices[1] = b;
+	face->mNumIndices = 2;
+	face->mIndices = new unsigned int[2];
+	face->mIndices[0] = a;
+	face->mIndices[1] = b;
+	++face;
 }
 
-static inline void SetFace(aiFace &face, int a, int b, int c) {
+static inline void SetFaceAndAdvance3(aiFace*& face, unsigned int numVertices, unsigned int a, unsigned int b, unsigned int c) {
-	face.mNumIndices = 3;
+	if ((a >= numVertices) || (b >= numVertices) || (c >= numVertices)) {
-	face.mIndices = new unsigned int[3];
+		return;
-	face.mIndices[0] = a;
+	}
-	face.mIndices[1] = b;
+	face->mNumIndices = 3;
-	face.mIndices[2] = c;
+	face->mIndices = new unsigned int[3];
+	face->mIndices[0] = a;
+	face->mIndices[1] = b;
+	face->mIndices[2] = c;
+	++face;
 }
 
 #ifdef ASSIMP_BUILD_DEBUG
@@ -335,7 +347,7 @@ static inline bool CheckValidFacesIndices(aiFace *faces, unsigned nFaces, unsign
 
 void glTF2Importer::ImportMeshes(glTF2::Asset &r) {
 	ASSIMP_LOG_DEBUG_F("Importing ", r.meshes.Size(), " meshes");
-	std::vector<aiMesh *> meshes;
+	std::vector<std::unique_ptr<aiMesh>> meshes;
 
 	unsigned int k = 0;
     meshOffsets.clear();
@@ -350,7 +362,7 @@ void glTF2Importer::ImportMeshes(glTF2::Asset &r) {
 			Mesh::Primitive &prim = mesh.primitives[p];
 
 			aiMesh *aim = new aiMesh();
-			meshes.push_back(aim);
+			meshes.push_back(std::unique_ptr<aiMesh>(aim));
 
 			aim->mName = mesh.name.empty() ? mesh.id : mesh.name;
 
@@ -486,6 +498,7 @@ void glTF2Importer::ImportMeshes(glTF2::Asset &r) {
 			}
 
 			aiFace *faces = nullptr;
+			aiFace *facePtr = nullptr;
 			size_t nFaces = 0;
 
 			if (prim.indices) {
@@ -497,9 +510,9 @@ void glTF2Importer::ImportMeshes(glTF2::Asset &r) {
 				switch (prim.mode) {
 					case PrimitiveMode_POINTS: {
 						nFaces = count;
-						faces = new aiFace[nFaces];
+						facePtr = faces = new aiFace[nFaces];
 						for (unsigned int i = 0; i < count; ++i) {
-							SetFace(faces[i], data.GetUInt(i));
+							SetFaceAndAdvance1(facePtr, aim->mNumVertices, data.GetUInt(i));
 						}
 						break;
 					}
@@ -510,9 +523,9 @@ void glTF2Importer::ImportMeshes(glTF2::Asset &r) {
 							ASSIMP_LOG_WARN("The number of vertices was not compatible with the LINES mode. Some vertices were dropped.");
 							count = nFaces * 2;
 						}
-						faces = new aiFace[nFaces];
+						facePtr = faces = new aiFace[nFaces];
 						for (unsigned int i = 0; i < count; i += 2) {
-							SetFace(faces[i / 2], data.GetUInt(i), data.GetUInt(i + 1));
+							SetFaceAndAdvance2(facePtr, aim->mNumVertices, data.GetUInt(i), data.GetUInt(i + 1));
 						}
 						break;
 					}
@@ -520,13 +533,13 @@ void glTF2Importer::ImportMeshes(glTF2::Asset &r) {
 					case PrimitiveMode_LINE_LOOP:
 					case PrimitiveMode_LINE_STRIP: {
 						nFaces = count - ((prim.mode == PrimitiveMode_LINE_STRIP) ? 1 : 0);
-						faces = new aiFace[nFaces];
+						facePtr = faces = new aiFace[nFaces];
-						SetFace(faces[0], data.GetUInt(0), data.GetUInt(1));
+						SetFaceAndAdvance2(facePtr, aim->mNumVertices, data.GetUInt(0), data.GetUInt(1));
 						for (unsigned int i = 2; i < count; ++i) {
-							SetFace(faces[i - 1], faces[i - 2].mIndices[1], data.GetUInt(i));
+							SetFaceAndAdvance2(facePtr, aim->mNumVertices, data.GetUInt(i - 1), data.GetUInt(i));
 						}
 						if (prim.mode == PrimitiveMode_LINE_LOOP) { // close the loop
-							SetFace(faces[count - 1], faces[count - 2].mIndices[1], faces[0].mIndices[0]);
+							SetFaceAndAdvance2(facePtr, aim->mNumVertices, data.GetUInt(static_cast<int>(count) - 1), faces[0].mIndices[0]);
 						}
 						break;
 					}
@@ -537,33 +550,33 @@ void glTF2Importer::ImportMeshes(glTF2::Asset &r) {
 							ASSIMP_LOG_WARN("The number of vertices was not compatible with the TRIANGLES mode. Some vertices were dropped.");
 							count = nFaces * 3;
 						}
-						faces = new aiFace[nFaces];
+						facePtr = faces = new aiFace[nFaces];
 						for (unsigned int i = 0; i < count; i += 3) {
-							SetFace(faces[i / 3], data.GetUInt(i), data.GetUInt(i + 1), data.GetUInt(i + 2));
+							SetFaceAndAdvance3(facePtr, aim->mNumVertices, data.GetUInt(i), data.GetUInt(i + 1), data.GetUInt(i + 2));
 						}
 						break;
 					}
 					case PrimitiveMode_TRIANGLE_STRIP: {
 						nFaces = count - 2;
-						faces = new aiFace[nFaces];
+						facePtr = faces = new aiFace[nFaces];
 						for (unsigned int i = 0; i < nFaces; ++i) {
 							//The ordering is to ensure that the triangles are all drawn with the same orientation
 							if ((i + 1) % 2 == 0) {
 								//For even n, vertices n + 1, n, and n + 2 define triangle n
-								SetFace(faces[i], data.GetUInt(i + 1), data.GetUInt(i), data.GetUInt(i + 2));
+								SetFaceAndAdvance3(facePtr, aim->mNumVertices, data.GetUInt(i + 1), data.GetUInt(i), data.GetUInt(i + 2));
 							} else {
 								//For odd n, vertices n, n+1, and n+2 define triangle n
-								SetFace(faces[i], data.GetUInt(i), data.GetUInt(i + 1), data.GetUInt(i + 2));
+								SetFaceAndAdvance3(facePtr, aim->mNumVertices, data.GetUInt(i), data.GetUInt(i + 1), data.GetUInt(i + 2));
 							}
 						}
 						break;
 					}
 					case PrimitiveMode_TRIANGLE_FAN:
 						nFaces = count - 2;
-						faces = new aiFace[nFaces];
+						facePtr = faces = new aiFace[nFaces];
-						SetFace(faces[0], data.GetUInt(0), data.GetUInt(1), data.GetUInt(2));
+						SetFaceAndAdvance3(facePtr, aim->mNumVertices, data.GetUInt(0), data.GetUInt(1), data.GetUInt(2));
 						for (unsigned int i = 1; i < nFaces; ++i) {
-							SetFace(faces[i], faces[0].mIndices[0], faces[i - 1].mIndices[2], data.GetUInt(i + 2));
+							SetFaceAndAdvance3(facePtr, aim->mNumVertices, data.GetUInt(0), data.GetUInt(i + 1), data.GetUInt(i + 2));
 						}
 						break;
 				}
@@ -575,9 +588,9 @@ void glTF2Importer::ImportMeshes(glTF2::Asset &r) {
 				switch (prim.mode) {
 					case PrimitiveMode_POINTS: {
 						nFaces = count;
-						faces = new aiFace[nFaces];
+						facePtr = faces = new aiFace[nFaces];
 						for (unsigned int i = 0; i < count; ++i) {
-							SetFace(faces[i], i);
+							SetFaceAndAdvance1(facePtr, aim->mNumVertices, i);
 						}
 						break;
 					}
@@ -588,9 +601,9 @@ void glTF2Importer::ImportMeshes(glTF2::Asset &r) {
 							ASSIMP_LOG_WARN("The number of vertices was not compatible with the LINES mode. Some vertices were dropped.");
 							count = (unsigned int)nFaces * 2;
 						}
-						faces = new aiFace[nFaces];
+						facePtr = faces = new aiFace[nFaces];
 						for (unsigned int i = 0; i < count; i += 2) {
-							SetFace(faces[i / 2], i, i + 1);
+							SetFaceAndAdvance2(facePtr, aim->mNumVertices, i, i + 1);
 						}
 						break;
 					}
@@ -598,13 +611,13 @@ void glTF2Importer::ImportMeshes(glTF2::Asset &r) {
 					case PrimitiveMode_LINE_LOOP:
 					case PrimitiveMode_LINE_STRIP: {
 						nFaces = count - ((prim.mode == PrimitiveMode_LINE_STRIP) ? 1 : 0);
-						faces = new aiFace[nFaces];
+						facePtr = faces = new aiFace[nFaces];
-						SetFace(faces[0], 0, 1);
+						SetFaceAndAdvance2(facePtr, aim->mNumVertices, 0, 1);
 						for (unsigned int i = 2; i < count; ++i) {
-							SetFace(faces[i - 1], faces[i - 2].mIndices[1], i);
+							SetFaceAndAdvance2(facePtr, aim->mNumVertices, i - 1, i);
 						}
 						if (prim.mode == PrimitiveMode_LINE_LOOP) { // close the loop
-							SetFace(faces[count - 1], faces[count - 2].mIndices[1], faces[0].mIndices[0]);
+							SetFaceAndAdvance2(facePtr, aim->mNumVertices, count - 1, 0);
 						}
 						break;
 					}
@@ -615,42 +628,50 @@ void glTF2Importer::ImportMeshes(glTF2::Asset &r) {
 							ASSIMP_LOG_WARN("The number of vertices was not compatible with the TRIANGLES mode. Some vertices were dropped.");
 							count = (unsigned int)nFaces * 3;
 						}
-						faces = new aiFace[nFaces];
+						facePtr = faces = new aiFace[nFaces];
 						for (unsigned int i = 0; i < count; i += 3) {
-							SetFace(faces[i / 3], i, i + 1, i + 2);
+							SetFaceAndAdvance3(facePtr, aim->mNumVertices, i, i + 1, i + 2);
 						}
 						break;
 					}
 					case PrimitiveMode_TRIANGLE_STRIP: {
 						nFaces = count - 2;
-						faces = new aiFace[nFaces];
+						facePtr = faces = new aiFace[nFaces];
 						for (unsigned int i = 0; i < nFaces; ++i) {
 							//The ordering is to ensure that the triangles are all drawn with the same orientation
 							if ((i + 1) % 2 == 0) {
 								//For even n, vertices n + 1, n, and n + 2 define triangle n
-								SetFace(faces[i], i + 1, i, i + 2);
+								SetFaceAndAdvance3(facePtr, aim->mNumVertices, i + 1, i, i + 2);
 							} else {
 								//For odd n, vertices n, n+1, and n+2 define triangle n
-								SetFace(faces[i], i, i + 1, i + 2);
+								SetFaceAndAdvance3(facePtr, aim->mNumVertices, i, i + 1, i + 2);
 							}
 						}
 						break;
 					}
 					case PrimitiveMode_TRIANGLE_FAN:
 						nFaces = count - 2;
-						faces = new aiFace[nFaces];
+						facePtr = faces = new aiFace[nFaces];
-						SetFace(faces[0], 0, 1, 2);
+						SetFaceAndAdvance3(facePtr, aim->mNumVertices, 0, 1, 2);
 						for (unsigned int i = 1; i < nFaces; ++i) {
-							SetFace(faces[i], faces[0].mIndices[0], faces[i - 1].mIndices[2], i + 2);
+							SetFaceAndAdvance3(facePtr, aim->mNumVertices, 0, i + 1, i + 2);
 						}
 						break;
 				}
 			}
 
-			if (nullptr != faces) {
+			if (faces) {
 				aim->mFaces = faces;
-				aim->mNumFaces = static_cast<unsigned int>(nFaces);
+                const unsigned int actualNumFaces = static_cast<unsigned int>(facePtr - faces);
-				ai_assert(CheckValidFacesIndices(faces, static_cast<unsigned>(nFaces), aim->mNumVertices));
+				if (actualNumFaces < nFaces) {
+					ASSIMP_LOG_WARN("Some faces had out-of-range indices. Those faces were dropped.");
+				}
+				if (actualNumFaces == 0)
+				{
+					throw DeadlyImportError(std::string("Mesh \"") + aim->mName.C_Str() + "\" has no faces");
+				}
+				aim->mNumFaces = actualNumFaces;
+				ai_assert(CheckValidFacesIndices(faces, actualNumFaces, aim->mNumVertices));
 			}
 
 			if (prim.material) {

code/CMakeLists.txt

@@ -1066,7 +1066,7 @@ endif()
 
 ADD_DEFINITIONS( -DASSIMP_BUILD_DLL_EXPORT )
 
-if ( MSVC )
+IF( MSVC OR "${CMAKE_CXX_SIMULATE_ID}" MATCHES "MSVC") # clang with MSVC ABI
   ADD_DEFINITIONS( -D_SCL_SECURE_NO_WARNINGS )
   ADD_DEFINITIONS( -D_CRT_SECURE_NO_WARNINGS )
 endif ()

code/Common/Exporter.cpp

@@ -74,9 +74,9 @@ Here we implement only the C++ interface (Assimp::Exporter).
 
 namespace Assimp {
 
-#if _MSC_VER > 1920
+#ifdef _MSC_VER
 #    pragma warning( disable : 4800 )
-#endif // _WIN32
+#endif // _MSC_VER
 
 
 // PostStepRegistry.cpp

code/Common/Subdivision.cpp

@@ -53,9 +53,9 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 using namespace Assimp;
 void mydummy() {}
 
-#if _MSC_VER > 1920
+#ifdef _MSC_VER
 #pragma warning(disable : 4709)
-#endif // _WIN32
+#endif // _MSC_VER
 // ------------------------------------------------------------------------------------------------
 /** Subdivider stub class to implement the Catmull-Clarke subdivision algorithm. The
  *  implementation is basing on recursive refinement. Directly evaluating the result is also

contrib/gtest/include/gtest/internal/gtest-port.h

@@ -312,10 +312,22 @@
     __pragma(warning(disable: warnings))
 # define GTEST_DISABLE_MSC_WARNINGS_POP_()          \
     __pragma(warning(pop))
+# if defined(__clang__)
+#  define GTEST_DISABLE_CLANG_DEPRECATED_WARNINGS_PUSH_() \
+      _Pragma("clang diagnostic push") \
+      _Pragma("clang diagnostic ignored \"-Wdeprecated-declarations\"")
+#  define GTEST_DISABLE_CLANG_WARNINGS_POP_() \
+      _Pragma("clang diagnostic pop")
+# else
+#  define GTEST_DISABLE_CLANG_DEPRECATED_WARNINGS_PUSH_()
+#  define GTEST_DISABLE_CLANG_WARNINGS_POP_()
+# endif
 #else
 // Older versions of MSVC don't have __pragma.
 # define GTEST_DISABLE_MSC_WARNINGS_PUSH_(warnings)
 # define GTEST_DISABLE_MSC_WARNINGS_POP_()
+# define GTEST_DISABLE_CLANG_DEPRECATED_WARNINGS_PUSH_()
+# define GTEST_DISABLE_CLANG_WARNINGS_POP_()
 #endif
 
 #ifndef GTEST_LANG_CXX11
@@ -2352,6 +2364,7 @@ inline bool IsDir(const StatStruct& st) { return S_ISDIR(st.st_mode); }
 // Functions deprecated by MSVC 8.0.
 
 GTEST_DISABLE_MSC_WARNINGS_PUSH_(4996 /* deprecated function */)
+GTEST_DISABLE_CLANG_DEPRECATED_WARNINGS_PUSH_()
 
 inline const char* StrNCpy(char* dest, const char* src, size_t n) {
   return strncpy(dest, src, n);
@@ -2399,6 +2412,7 @@ inline const char* GetEnv(const char* name) {
 #endif
 }
 
+GTEST_DISABLE_CLANG_WARNINGS_POP_()
 GTEST_DISABLE_MSC_WARNINGS_POP_()
 
 #if GTEST_OS_WINDOWS_MOBILE

contrib/gtest/src/gtest-port.cc

@@ -926,7 +926,7 @@ GTestLog::~GTestLog() {
 // Disable Microsoft deprecation warnings for POSIX functions called from
 // this class (creat, dup, dup2, and close)
 GTEST_DISABLE_MSC_WARNINGS_PUSH_(4996)
-
+GTEST_DISABLE_CLANG_DEPRECATED_WARNINGS_PUSH_()
 #if GTEST_HAS_STREAM_REDIRECTION
 
 // Object that captures an output stream (stdout/stderr).
@@ -1010,6 +1010,7 @@ class CapturedStream {
 };
 
 GTEST_DISABLE_MSC_WARNINGS_POP_()
+GTEST_DISABLE_CLANG_WARNINGS_POP_()
 
 static CapturedStream* g_captured_stderr = NULL;
 static CapturedStream* g_captured_stdout = NULL;

contrib/rapidjson/include/rapidjson/document.h

@@ -31,7 +31,7 @@
 #include <limits>
 
 RAPIDJSON_DIAG_PUSH
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && !(__clang__)
 RAPIDJSON_DIAG_OFF(4127) // conditional expression is constant
 RAPIDJSON_DIAG_OFF(4244) // conversion from kXxxFlags to 'uint16_t', possible loss of data
 #endif

contrib/rapidjson/include/rapidjson/encodings.h

@@ -17,7 +17,7 @@
 
 #include "rapidjson.h"
 
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && !defined(__clang__)
 RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(4244) // conversion from 'type1' to 'type2', possible loss of data
 RAPIDJSON_DIAG_OFF(4702)  // unreachable code
@@ -709,7 +709,7 @@ struct Transcoder<Encoding, Encoding> {
 
 RAPIDJSON_NAMESPACE_END
 
-#if defined(__GNUC__) || defined(_MSC_VER)
+#if defined(__GNUC__) || (defined(_MSC_VER) && !defined(__clang__))
 RAPIDJSON_DIAG_POP
 #endif
 

contrib/rapidjson/include/rapidjson/internal/meta.h

@@ -21,7 +21,7 @@
 RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(effc++)
 #endif
-#if defined(_MSC_VER)
+#if defined(_MSC_VER) && !defined(__clang__)
 RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(6334)
 #endif
@@ -174,7 +174,7 @@ template <typename T> struct RemoveSfinaeTag<SfinaeTag&(*)(T)> { typedef T Type;
 RAPIDJSON_NAMESPACE_END
 //@endcond
 
-#if defined(__GNUC__) || defined(_MSC_VER)
+#if defined(__GNUC__) || (defined(_MSC_VER) && !defined(__clang__))
 RAPIDJSON_DIAG_POP
 #endif
 

contrib/rapidjson/include/rapidjson/reader.h

@@ -37,7 +37,7 @@
 #include <arm_neon.h>
 #endif
 
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && !defined(__clang__)
 RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(4127)  // conditional expression is constant
 RAPIDJSON_DIAG_OFF(4702)  // unreachable code
@@ -2214,7 +2214,7 @@ RAPIDJSON_DIAG_POP
 RAPIDJSON_DIAG_POP
 #endif
 
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && !defined(__clang__)
 RAPIDJSON_DIAG_POP
 #endif
 

contrib/rapidjson/include/rapidjson/writer.h

@@ -36,7 +36,7 @@
 #include <arm_neon.h>
 #endif
 
-#ifdef _MSC_VER
+#if defined (_MSC_VER) && !defined(__clang__)
 RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(4127) // conditional expression is constant
 #endif
@@ -700,11 +700,11 @@ inline bool Writer<StringBuffer>::ScanWriteUnescapedString(StringStream& is, siz
 
 RAPIDJSON_NAMESPACE_END
 
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && !defined(__clang__)
 RAPIDJSON_DIAG_POP
 #endif
 
-#ifdef __clang__
+#if defined(__clang__)
 RAPIDJSON_DIAG_POP
 #endif
 

contrib/unzip/ioapi.c

@@ -16,6 +16,10 @@
 #ifdef _WIN32
 #    pragma warning(push)
 #    pragma warning(disable : 4131 4100)
+#    ifdef __clang__
+#    pragma clang diagnostic push
+#    pragma clang diagnostic ignored "-Wunused-parameter"
+#    endif
 #endif // _WIN32
 
 /* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */
@@ -181,4 +185,7 @@ void fill_fopen_filefunc (pzlib_filefunc_def)
 
 #ifdef _WIN32
 #    pragma warning(pop)
+#    ifdef __clang__
+#        pragma clang diagnostic pop
+#    endif
 #endif // _WIN32

contrib/unzip/ioapi.h

@@ -24,7 +24,7 @@
 
 #ifndef ZCALLBACK
 
-#if (defined(WIN32) || defined (WINDOWS) || defined (_WINDOWS)) && defined(CALLBACK) && defined (USEWINDOWS_CALLBACK)
+#if (defined(_WIN32) || defined (WINDOWS) || defined (_WINDOWS)) && defined(CALLBACK) && defined (USEWINDOWS_CALLBACK)
 #define ZCALLBACK CALLBACK
 #else
 #define ZCALLBACK

contrib/unzip/unzip.c

@@ -1554,7 +1554,6 @@ extern int ZEXPORT unzGetGlobalComment (file, szComment, uSizeBuf)
     char *szComment;
     uLong uSizeBuf;
 {
-    int err=UNZ_OK;
     unz_s* s;
     uLong uReadThis ;
     if (file==NULL)

contrib/zip/src/miniz.h

@@ -5361,7 +5361,7 @@ mz_bool mz_zip_reader_extract_to_mem_no_alloc(mz_zip_archive *pZip,
   } else {
     // Temporarily allocate a read buffer.
     read_buf_size = MZ_MIN(file_stat.m_comp_size, MZ_ZIP_MAX_IO_BUF_SIZE);
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && !defined(__clang__)
     if (((0, sizeof(size_t) == sizeof(mz_uint32))) &&
         (read_buf_size > 0x7FFFFFFF))
 #else
@@ -5454,7 +5454,7 @@ void *mz_zip_reader_extract_to_heap(mz_zip_archive *pZip, mz_uint file_index,
   uncomp_size = MZ_READ_LE32(p + MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS);
 
   alloc_size = (flags & MZ_ZIP_FLAG_COMPRESSED_DATA) ? comp_size : uncomp_size;
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && !defined(__clang__)
   if (((0, sizeof(size_t) == sizeof(mz_uint32))) && (alloc_size > 0x7FFFFFFF))
 #else
   if (((sizeof(size_t) == sizeof(mz_uint32))) && (alloc_size > 0x7FFFFFFF))
@@ -5560,7 +5560,7 @@ mz_bool mz_zip_reader_extract_to_callback(mz_zip_archive *pZip,
   if ((flags & MZ_ZIP_FLAG_COMPRESSED_DATA) || (!file_stat.m_method)) {
     // The file is stored or the caller has requested the compressed data.
     if (pZip->m_pState->m_pMem) {
-#ifdef _MSC_VER
+#if defined (_MSC_VER) && !defined(__clang__)
       if (((0, sizeof(size_t) == sizeof(mz_uint32))) &&
           (file_stat.m_comp_size > 0xFFFFFFFF))
 #else

fuzz/assimp_fuzzer.cc

@@ -39,9 +39,12 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ---------------------------------------------------------------------------
 */
 #include <assimp/cimport.h>
+#include <assimp/Importer.hpp>
 #include <assimp/scene.h>
 #include <assimp/postprocess.h>
 
+using namespace Assimp;
+
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t dataSize) {
 	aiLogStream stream = aiGetPredefinedLogStream(aiDefaultLogStream_STDOUT,NULL);
 	aiAttachLogStream(&stream);

include/assimp/BaseImporter.h

@@ -57,6 +57,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <map>
 #include <set>
 #include <vector>
+#include <memory>
 
 struct aiScene;
 struct aiImporterDesc;
@@ -391,6 +392,24 @@ public: // static utilities
         }
     }
 
+    // -------------------------------------------------------------------
+    /** Utility function to move a std::vector of unique_ptrs into a aiScene array
+    *  @param vec The vector of unique_ptrs to be moved
+    *  @param out The output pointer to the allocated array.
+    *  @param numOut The output count of elements copied. */
+    template <typename T>
+    AI_FORCE_INLINE static void CopyVector(
+            std::vector<std::unique_ptr<T>> &vec,
+            T **&out,
+            unsigned int &outLength) {
+        outLength = unsigned(vec.size());
+        if (outLength) {
+            out = new T*[outLength];
+            T** outPtr = out;
+            std::for_each(vec.begin(), vec.end(), [&outPtr](std::unique_ptr<T>& uPtr){*outPtr = uPtr.release(); ++outPtr; });
+        }
+    }
+
 protected:
     /// Error description in case there was one.
     std::string m_ErrorText;

include/assimp/Compiler/poppack1.h

@@ -14,7 +14,7 @@
 #endif
 
 // reset packing to the original value
-#if defined(_MSC_VER) ||  defined(__BORLANDC__) || defined (__BCPLUSPLUS__)
+#if (defined(_MSC_VER) && !defined(__clang__)) ||  defined(__BORLANDC__) || defined (__BCPLUSPLUS__)
 #	pragma pack( pop )
 #endif
 #undef PACK_STRUCT

include/assimp/Compiler/pushpack1.h

@@ -22,7 +22,7 @@
 #	error poppack1.h must be included after pushpack1.h
 #endif
 
-#if defined(_MSC_VER) ||  defined(__BORLANDC__) ||	defined (__BCPLUSPLUS__)
+#if (defined(_MSC_VER) && !defined(__clang__)) ||  defined(__BORLANDC__) ||	defined (__BCPLUSPLUS__)
 #	pragma pack(push,1)
 #	define PACK_STRUCT
 #elif defined( __GNUC__ ) || defined(__clang__)

test/models/glTF2/IndexOutOfRange/AllIndicesOutOfRange.gltf

@@ -0,0 +1,142 @@
+{
+    "asset": {
+        "generator": "COLLADA2GLTF",
+        "version": "2.0"
+    },
+    "scene": 0,
+    "scenes": [
+        {
+            "nodes": [
+                0
+            ]
+        }
+    ],
+    "nodes": [
+        {
+            "children": [
+                1
+            ],
+            "matrix": [
+                1.0,
+                0.0,
+                0.0,
+                0.0,
+                0.0,
+                0.0,
+                -1.0,
+                0.0,
+                0.0,
+                1.0,
+                0.0,
+                0.0,
+                0.0,
+                0.0,
+                0.0,
+                1.0
+            ]
+        },
+        {
+            "mesh": 0
+        }
+    ],
+    "meshes": [
+        {
+            "primitives": [
+                {
+                    "attributes": {
+                        "NORMAL": 1,
+                        "POSITION": 2
+                    },
+                    "indices": 0,
+                    "mode": 4,
+                    "material": 0
+                }
+            ],
+            "name": "Mesh"
+        }
+    ],
+    "accessors": [
+        {
+            "bufferView": 0,
+            "byteOffset": 0,
+            "componentType": 5123,
+            "count": 36,
+            "max": [
+                255
+            ],
+            "min": [
+                0
+            ],
+            "type": "SCALAR"
+        },
+        {
+            "bufferView": 1,
+            "byteOffset": 0,
+            "componentType": 5126,
+            "count": 24,
+            "max": [
+                1.0,
+                1.0,
+                1.0
+            ],
+            "min": [
+                -1.0,
+                -1.0,
+                -1.0
+            ],
+            "type": "VEC3"
+        },
+        {
+            "bufferView": 1,
+            "byteOffset": 288,
+            "componentType": 5126,
+            "count": 24,
+            "max": [
+                0.5,
+                0.5,
+                0.5
+            ],
+            "min": [
+                -0.5,
+                -0.5,
+                -0.5
+            ],
+            "type": "VEC3"
+        }
+    ],
+    "materials": [
+        {
+            "pbrMetallicRoughness": {
+                "baseColorFactor": [
+                    0.800000011920929,
+                    0.0,
+                    0.0,
+                    1.0
+                ],
+                "metallicFactor": 0.0
+            },
+            "name": "Red"
+        }
+    ],
+    "bufferViews": [
+        {
+            "buffer": 0,
+            "byteOffset": 576,
+            "byteLength": 72,
+            "target": 34963
+        },
+        {
+            "buffer": 0,
+            "byteOffset": 0,
+            "byteLength": 576,
+            "byteStride": 12,
+            "target": 34962
+        }
+    ],
+    "buffers": [
+        {
+            "byteLength": 648,
+            "uri": "AllIndicesOutOfRange.bin"
+        }
+    ]
+}

test/models/glTF2/IndexOutOfRange/IndexOutOfRange.gltf

@@ -0,0 +1,142 @@
+{
+    "asset": {
+        "generator": "COLLADA2GLTF",
+        "version": "2.0"
+    },
+    "scene": 0,
+    "scenes": [
+        {
+            "nodes": [
+                0
+            ]
+        }
+    ],
+    "nodes": [
+        {
+            "children": [
+                1
+            ],
+            "matrix": [
+                1.0,
+                0.0,
+                0.0,
+                0.0,
+                0.0,
+                0.0,
+                -1.0,
+                0.0,
+                0.0,
+                1.0,
+                0.0,
+                0.0,
+                0.0,
+                0.0,
+                0.0,
+                1.0
+            ]
+        },
+        {
+            "mesh": 0
+        }
+    ],
+    "meshes": [
+        {
+            "primitives": [
+                {
+                    "attributes": {
+                        "NORMAL": 1,
+                        "POSITION": 2
+                    },
+                    "indices": 0,
+                    "mode": 4,
+                    "material": 0
+                }
+            ],
+            "name": "Mesh"
+        }
+    ],
+    "accessors": [
+        {
+            "bufferView": 0,
+            "byteOffset": 0,
+            "componentType": 5123,
+            "count": 36,
+            "max": [
+                255
+            ],
+            "min": [
+                0
+            ],
+            "type": "SCALAR"
+        },
+        {
+            "bufferView": 1,
+            "byteOffset": 0,
+            "componentType": 5126,
+            "count": 24,
+            "max": [
+                1.0,
+                1.0,
+                1.0
+            ],
+            "min": [
+                -1.0,
+                -1.0,
+                -1.0
+            ],
+            "type": "VEC3"
+        },
+        {
+            "bufferView": 1,
+            "byteOffset": 288,
+            "componentType": 5126,
+            "count": 24,
+            "max": [
+                0.5,
+                0.5,
+                0.5
+            ],
+            "min": [
+                -0.5,
+                -0.5,
+                -0.5
+            ],
+            "type": "VEC3"
+        }
+    ],
+    "materials": [
+        {
+            "pbrMetallicRoughness": {
+                "baseColorFactor": [
+                    0.800000011920929,
+                    0.0,
+                    0.0,
+                    1.0
+                ],
+                "metallicFactor": 0.0
+            },
+            "name": "Red"
+        }
+    ],
+    "bufferViews": [
+        {
+            "buffer": 0,
+            "byteOffset": 576,
+            "byteLength": 72,
+            "target": 34963
+        },
+        {
+            "buffer": 0,
+            "byteOffset": 0,
+            "byteLength": 576,
+            "byteStride": 12,
+            "target": 34962
+        }
+    ],
+    "buffers": [
+        {
+            "byteLength": 648,
+            "uri": "IndexOutOfRange.bin"
+        }
+    ]
+}

test/unit/UnitTestFileGenerator.h

@@ -44,21 +44,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <cstdlib>
 #include <gtest/gtest.h>
 
-#if defined(__GNUC__) || defined(__clang__)
+#if defined(_MSC_VER)
-#define TMP_PATH "/tmp/"
-inline FILE* MakeTmpFile(char* tmplate)
-{
-    auto fd = mkstemp(tmplate);
-    EXPECT_NE(-1, fd);
-    if(fd == -1)
-    {
-        return nullptr;
-    }
-    auto fs = fdopen(fd, "w+");
-    EXPECT_NE(nullptr, fs);
-    return fs;
-}
-#elif defined(_MSC_VER)
 #include <io.h>
 #define TMP_PATH "./"
 inline FILE* MakeTmpFile(char* tmplate)
@@ -73,4 +59,18 @@ inline FILE* MakeTmpFile(char* tmplate)
     EXPECT_NE(fs, nullptr);
     return fs;
 }
+#elif defined(__GNUC__) || defined(__clang__)
+#define TMP_PATH "/tmp/"
+inline FILE* MakeTmpFile(char* tmplate)
+{
+    auto fd = mkstemp(tmplate);
+    EXPECT_NE(-1, fd);
+    if(fd == -1)
+    {
+        return nullptr;
+    }
+    auto fs = fdopen(fd, "w+");
+    EXPECT_NE(nullptr, fs);
+    return fs;
+}
 #endif

test/unit/utColladaImportExport.cpp

@@ -157,7 +157,6 @@ public:
 
     static inline void CheckNodeIdNames(IdNameMap &nodeIdMap, IdNameMap &nodeNameMap, const aiNode *parent, size_t index) {
         IdNameString namePair = GetItemIdName(parent, index);
-        const auto result = nodeNameMap.insert(namePair);
         IdNameString idPair = GetColladaIdName(parent, index);
         ReportDuplicate(nodeIdMap, idPair, typeid(aiNode).name());
 

test/unit/utglTF2ImportExport.cpp

@@ -46,11 +46,13 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <assimp/scene.h>
 #include <assimp/Exporter.hpp>
 #include <assimp/Importer.hpp>
+#include <assimp/LogStream.hpp>
+#include <assimp/DefaultLogger.hpp>
+
 
 #include <array>
 
 #include <assimp/pbrmaterial.h>
-
 using namespace Assimp;
 
 class utglTF2ImportExport : public AbstractImportExportBase {
@@ -541,3 +543,34 @@ TEST_F(utglTF2ImportExport, norootnode_issue_3269) {
     const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/glTF2/issue_3269/texcoord_crash.gltf", aiProcess_ValidateDataStructure);
     ASSERT_EQ(scene, nullptr);
 }
+
+TEST_F(utglTF2ImportExport, indexOutOfRange) {
+    // The contents of an asset should not lead to an assert.
+    Assimp::Importer importer;
+
+    struct LogObserver : Assimp::LogStream {
+        bool m_observedWarning = false;
+        void write(const char *message) override {
+            m_observedWarning = m_observedWarning || std::strstr(message, "faces were dropped");
+        }
+    };
+    LogObserver logObserver;
+    
+    DefaultLogger::get()->attachStream(&logObserver);
+    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/glTF2/IndexOutOfRange/IndexOutOfRange.gltf", aiProcess_ValidateDataStructure);
+    ASSERT_NE(scene, nullptr);
+    ASSERT_NE(scene->mRootNode, nullptr);
+    ASSERT_EQ(scene->mNumMeshes, 1u);
+    EXPECT_EQ(scene->mMeshes[0]->mNumFaces, 11u);
+    DefaultLogger::get()->detachStream(&logObserver);
+    EXPECT_TRUE(logObserver.m_observedWarning);
+}
+
+TEST_F(utglTF2ImportExport, allIndicesOutOfRange) {
+    // The contents of an asset should not lead to an assert.
+    Assimp::Importer importer;
+    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/glTF2/IndexOutOfRange/AllIndicesOutOfRange.gltf", aiProcess_ValidateDataStructure);
+    ASSERT_EQ(scene, nullptr);
+    std::string error = importer.GetErrorString();
+    ASSERT_NE(error.find("Mesh \"Mesh\" has no faces"), std::string::npos);
+}