Fix sanitizer on win

.github/workflows/ci.yml

@@ -105,13 +105,18 @@ jobs:
         aws s3 cp s3://aws-crt-test-stuff/ci/${{ env.BUILDER_VERSION }}/linux-container-ci.sh ./linux-container-ci.sh && chmod a+x ./linux-container-ci.sh
         ./linux-container-ci.sh ${{ env.BUILDER_VERSION }} aws-crt-${{ env.LINUX_BASE_IMAGE }} build -p ${{ env.PACKAGE_NAME }} --cmake-extra=-DUSE_CPU_EXTENSIONS=OFF
 
-  windows:
+  windows-sanitizer:
     runs-on: windows-2022 # latest
     steps:
+    - name: Setup MSVC dev env (san, etc...)
+      uses: TheMrMilchmann/setup-msvc-dev@v3
+      with:
+        arch: x64
+      # note: default sanitizer pair is address,undefined. win currently only supports address.
     - name: Build ${{ env.PACKAGE_NAME }} + consumers
       run: |
         python -c "from urllib.request import urlretrieve; urlretrieve('${{ env.BUILDER_HOST }}/${{ env.BUILDER_SOURCE }}/${{ env.BUILDER_VERSION }}/builder.pyz?run=${{ env.RUN }}', 'builder.pyz')"
-        python builder.pyz build -p ${{ env.PACKAGE_NAME }}
+        python builder.pyz build -p ${{ env.PACKAGE_NAME }} --cmake-extra=-DENABLE_SANITIZERS=ON
 
   windows-vc16:
     runs-on: windows-2022 # latest

cmake/AwsSanitizers.cmake

@@ -65,8 +65,18 @@ function(aws_add_sanitizers target)
     endforeach()
 
     if(PRESENT_SANITIZERS)
-        target_compile_options(${target} PRIVATE -fno-omit-frame-pointer -fsanitize=${PRESENT_SANITIZERS})
-        target_link_libraries(${target} PUBLIC "-fno-omit-frame-pointer -fsanitize=${PRESENT_SANITIZERS}")
+        if(MSVC)
+            if(AWS_ARCH_INTEL_X64)
+                target_compile_options(${target} PRIVATE -fsanitize=${PRESENT_SANITIZERS})
+                target_link_libraries(${target} PRIVATE clang_rt.asan_dynamic-x86_64 clang_rt.asan_dynamic_runtime_thunk-x86_64)
+            else()
+                message("On Win platforms sanitizer is only supported on x86-64")
+                return()
+            endif()
+        else()
+            target_compile_options(${target} PRIVATE -fno-omit-frame-pointer -fsanitize=${PRESENT_SANITIZERS})
+            target_link_libraries(${target} PUBLIC "-fsanitize=${PRESENT_SANITIZERS}")
+        endif()
 
         string(REPLACE "," ";" PRESENT_SANITIZERS "${PRESENT_SANITIZERS}")
         set(${target}_SANITIZERS ${PRESENT_SANITIZERS} PARENT_SCOPE)