diff --git a/Sources/ComputeCxx/Swift/ContextDescriptor.cpp b/Sources/ComputeCxx/Swift/ContextDescriptor.cpp
index 6bd68958..78ee291d 100644
--- a/Sources/ComputeCxx/Swift/ContextDescriptor.cpp
+++ b/Sources/ComputeCxx/Swift/ContextDescriptor.cpp
@@ -145,7 +145,7 @@ uint64_t class_type_descriptor::immediate_members_offset() const {
 uint64_t class_type_descriptor::field_offset_vector_offset() const {
     // FieldOffsetVectorOffset is a private field,
     // but we know comes directly after Numfields which is a uint32_t
-    uint32_t offset = *(&_base.NumFields + sizeof(uint32_t));
+    uint32_t offset = *(reinterpret_cast<const char *>(&_base.NumFields) + sizeof(uint32_t));
 
     if (base()->hasResilientSuperclass()) {
         return immediate_members_offset() + offset;
diff --git a/Xcode/Configs/Compute.xcconfig b/Xcode/Configs/Compute.xcconfig
index 7094520f..209567ac 100644
--- a/Xcode/Configs/Compute.xcconfig
+++ b/Xcode/Configs/Compute.xcconfig
@@ -34,7 +34,7 @@ USE_HEADERMAP = NO
 CODE_SIGN_STYLE = Automatic
 
 CURRENT_PROJECT_VERSION = 1
-MARKETING_VERSION = 0.4.0
+MARKETING_VERSION = 0.4.1
 
 ENABLE_MODULE_VERIFIER = YES
 MODULE_VERIFIER_SUPPORTED_LANGUAGES = objective-c objective-c++