1 files changed, 7 insertions, 2 deletions
diff --git a/src/analyze.cpp b/src/analyze.cpp
index 9b361baa56..188da18515 100644
--- a/src/analyze.cpp
+++ b/src/analyze.cpp
@@ -7687,8 +7687,13 @@ static void resolve_llvm_types_union(CodeGen *g, ZigType *union_type, ResolveSta
     ZigType *tag_type = union_type->data.unionation.tag_type;
     uint32_t gen_field_count = union_type->data.unionation.gen_field_count;
     if (gen_field_count == 0) {
-        union_type->llvm_type = get_llvm_type(g, tag_type);
-        union_type->llvm_di_type = get_llvm_di_type(g, tag_type);
+        if (tag_type == nullptr) {
+            union_type->llvm_type = g->builtin_types.entry_void->llvm_type;
+            union_type->llvm_di_type = g->builtin_types.entry_void->llvm_di_type;
+        } else {
+            union_type->llvm_type = get_llvm_type(g, tag_type);
+            union_type->llvm_di_type = get_llvm_di_type(g, tag_type);
+        }
         union_type->data.unionation.resolve_status = ResolveStatusLLVMFull;
         return;
     }