[Objective-C] Enable static analysis, second try (#8875)

The previous attempt to enable static analysis (#8842) didn't actually run the static analysis checks.

- Run clang-tidy directly.
- Address static analysis warnings.

objectivec/src/ort_session.mm

@@ -188,7 +188,9 @@ NS_ASSUME_NONNULL_BEGIN
 
     for (size_t i = 0; i < nameCount; ++i) {
       auto name = std::unique_ptr<char[], decltype(deleter)>{getName(i, allocator), deleter};
-      [result addObject:[NSString stringWithUTF8String:name.get()]];
+      NSString* nameNsstr = [NSString stringWithUTF8String:name.get()];
+      NSAssert(nameNsstr != nil, @"nameNsstr must not be nil");
+      [result addObject:nameNsstr];
     }
 
     return result;

onnxruntime/core/providers/coreml/model/model.mm

@@ -73,8 +73,10 @@
   if (featureNames_ == nil) {
     NSMutableArray* names = [[NSMutableArray alloc] init];
     for (const auto& input : *inputs_) {
-      [names addObject:[NSString stringWithCString:input.first.c_str()
-                                          encoding:[NSString defaultCStringEncoding]]];
+      NSString* inputName = [NSString stringWithCString:input.first.c_str()
+                                               encoding:[NSString defaultCStringEncoding]];
+      NSAssert(inputName != nil, @"inputName must not be nil");
+      [names addObject:inputName];
     }
 
     featureNames_ = [NSSet setWithArray:names];
@@ -121,6 +123,7 @@
       return nil;
     }
 
+    NSAssert(mlArray != nil, @"mlArray must not be nil");
     auto* mlFeatureValue = [MLFeatureValue featureValueWithMultiArray:mlArray];
     return mlFeatureValue;
   }
@@ -172,6 +175,7 @@
 - (onnxruntime::common::Status)loadModel {
   NSError* error = nil;
   NSURL* modelUrl = [NSURL URLWithString:coreml_model_path_];
+  NSAssert(modelUrl != nil, @"modelUrl must not be nil");
   NSURL* compileUrl = [MLModel compileModelAtURL:modelUrl error:&error];
 
   if (error != nil) {
@@ -222,6 +226,7 @@
   for (auto& output : outputs) {
     NSString* output_name = [NSString stringWithCString:output.first.c_str()
                                                encoding:[NSString defaultCStringEncoding]];
+    NSAssert(output_name != nil, @"output_name must not be nil");
     MLFeatureValue* output_value =
         [output_feature featureValueForName:output_name];
 
@@ -246,22 +251,22 @@
                    1,
                    std::multiplies<int64_t>());
 
-    size_t output_data_byte_size = 0;
     const auto type = output_tensor.tensor_info.data_type;
     switch (type) {
-      case ONNX_NAMESPACE::TensorProto_DataType_FLOAT:
-        output_data_byte_size = num_elements * sizeof(float);
+      case ONNX_NAMESPACE::TensorProto_DataType_FLOAT: {
+        const auto output_data_byte_size = num_elements * sizeof(float);
         memcpy(output_tensor.buffer, model_output_data, output_data_byte_size);
         break;
-      case ONNX_NAMESPACE::TensorProto_DataType_INT32:
-        output_data_byte_size = num_elements * sizeof(int32_t);
+      }
+      case ONNX_NAMESPACE::TensorProto_DataType_INT32: {
+        const auto output_data_byte_size = num_elements * sizeof(int32_t);
         memcpy(output_tensor.buffer, model_output_data, output_data_byte_size);
         break;
+      }
       // For this case, since Coreml Spec only uses int32 for model output while onnx provides
       // int64 for model output data type. We are doing a type casting (int32 -> int64) here 
       // when copying the model to ORT
       case ONNX_NAMESPACE::TensorProto_DataType_INT64:
-        output_data_byte_size = num_elements * sizeof(int64_t);
         if (model_output_type == MLMultiArrayDataTypeInt32) {
           int32_t* model_output_data_prime = static_cast<int32_t*>(model_output_data);
           int64_t* output_tensor_buffer_prime = static_cast<int64_t*>(output_tensor.buffer);

tools/ci_build/github/apple/objectivec/static_analysis/requirements.txt

@@ -1,2 +1 @@
-codechecker==6.16.0
 ninja==1.10.2

tools/ci_build/github/azure-pipelines/mac-objc-static-analysis-ci-pipeline.yml

@@ -4,7 +4,7 @@ jobs:
   pool:
     vmImage: 'macOS-10.15'
   
-  timeoutInMinutes: 10
+  timeoutInMinutes: 60
 
   steps:
   - task: UsePythonVersion@0
@@ -24,43 +24,16 @@ jobs:
         --config Debug \
         --build_shared_lib --use_coreml --build_objc \
         --cmake_extra_defines CMAKE_EXPORT_COMPILE_COMMANDS=ON \
-        --update
+        --update \
+        --build --parallel
     displayName: Generate compile_commands.json
 
   - script: |
-      set -e
-
-      LLVM_DIR="$(brew --prefix llvm)"
-      CODECHECKER_CONFIG_FILE="$(dirname $(which codechecker))/../share/codechecker/config/package_layout.json"
-
-      sed -i "" \
-        -e 's#"clangsa": "[^"]*"#"clangsa": "'"${LLVM_DIR}"'/bin/clang"#' \
-        -e 's#"clang-tidy": "[^"]*"#"clang-tidy": "'"${LLVM_DIR}"'/bin/clang-tidy"#' \
-        "${CODECHECKER_CONFIG_FILE}"
-
-      cat "${CODECHECKER_CONFIG_FILE}"
-    displayName: Update CodeChecker configuration
-
-  - script: |
-      codechecker analyze \
-        --file "$(Build.SourcesDirectory)/objectivec/*" \
-               "$(Build.SourcesDirectory)/onnxruntime/core/platform/apple/logging/apple_log_sink.mm" \
-               "$(Build.SourcesDirectory)/onnxruntime/core/providers/coreml/model/*.mm" \
-        --output "$(Build.BinariesDirectory)/codechecker.analyze.out" \
-        "$(Build.BinariesDirectory)/Debug/compile_commands.json"
-
-      CODECHECKER_ANALYZE_EXIT_CODE=$?
-      echo "codechecker analyze exited with code: ${CODECHECKER_ANALYZE_EXIT_CODE}"
-    displayName: Run CodeChecker analysis
-
-  - script: |
-      # skip results from external dependencies
-      echo "-$(Build.SourcesDirectory)/cmake/external/*" > "$(Build.BinariesDirectory)/codechecker.parse.skipfile"
-
-      codechecker parse \
-        --ignore "$(Build.BinariesDirectory)/codechecker.parse.skipfile" \
-        "$(Build.BinariesDirectory)/codechecker.analyze.out"
-
-      CODECHECKER_PARSE_EXIT_CODE=$?
-      echo "codechecker parse exited with code: ${CODECHECKER_PARSE_EXIT_CODE}"
-    displayName: Show CodeChecker analysis results
+      "$(brew --prefix llvm)/bin/clang-tidy" \
+        -p="$(Build.BinariesDirectory)/Debug" \
+        --checks="-*,clang-analyzer-*" \
+        --header-filter="objectivec/include|objectivec/src|onnxruntime/core" \
+        ./objectivec/src/*.mm \
+        ./onnxruntime/core/platform/apple/logging/apple_log_sink.mm \
+        ./onnxruntime/core/providers/coreml/model/*.mm
+    displayName: Analyze Objective-C/C++ source code