Fix memory size in opaque-only case

rose-lang · Sep 24, 2023 · 417ca1b · 417ca1b
1 parent dc589f3
commit 417ca1b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/crates/wasm/src/lib.rs b/crates/wasm/src/lib.rs
@@ -657,7 +657,7 @@ pub fn compile<'a, O: Hash + Eq, T: Refs<'a, Opaque = O>>(f: Node<'a, O, T>) ->
 
     let mut memory_section = MemorySection::new();
     let page_size = 65536;
-    let pages: u64 = ((costs.last().unwrap() + page_size - 1) / page_size).into();
+    let pages: u64 = ((costs.last().unwrap_or(&0) + page_size - 1) / page_size).into();
     memory_section.memory(MemoryType {
         minimum: pages,
         maximum: Some(pages),