1 files changed, 7 insertions, 1 deletions
diff --git a/src/ir/comp.rs b/src/ir/comp.rs
index 6c0563b1..5e0b3ed6 100644
--- a/src/ir/comp.rs
+++ b/src/ir/comp.rs
@@ -1078,8 +1078,14 @@ impl CompInfo {
             return None;
         }
 
+        // empty union case
+        if self.fields().is_empty() {
+            return None;
+        }
+
         let mut max_size = 0;
-        let mut max_align = 0;
+        // Don't allow align(0)
+        let mut max_align = 1;
         for field in self.fields() {
             let field_layout = field.layout(ctx);