fix(codegen): clamp type size to word size

MilkeeyCat · Oct 13, 2024 · e7c93f7 · e7c93f7
1 parent 65b8f9f
commit e7c93f7
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Showing 5 changed files with 13 additions and 7 deletions.
diff --git a/programs/arrays.expect b/programs/arrays.expect
@@ -0,0 +1,3 @@
+{
+    "exit_code": 0
+}
diff --git a/programs/arrays.mk b/programs/arrays.mk
@@ -0,0 +1,6 @@
+fn main() -> u8 {
+    let arr: i32[4];
+    let arr_ptr: *i32 = arr as *i32;
+
+    return 0;
+}
diff --git a/programs/return.expect b/programs/return.expect
diff --git a/programs/return.mk b/programs/return.mk
diff --git a/src/codegen/codegen.rs b/src/codegen/codegen.rs
@@ -314,7 +314,10 @@ impl CodeGen {
             Expr::Cast(cast_expr) => {
                 if let Some(dest) = dest {
                     let type_ = cast_expr.expr.type_(&self.scope)?;
-                    let og_size = self.arch.size(&type_, &self.scope);
+                    let og_size = self
+                        .arch
+                        .size(&type_, &self.scope)
+                        .clamp(0, self.arch.word_size());
                     let casted_size = self.arch.size(&cast_expr.type_, &self.scope);
 
                     if casted_size != og_size {