Add size assertions for FnAbi and ArgAbi.

nnethercote · nnethercote · commit 263c426bfd2d · 2022-08-26T09:30:30.000+10:00
diff --git a/compiler/rustc_target/src/abi/call/mod.rs b/compiler/rustc_target/src/abi/call/mod.rs
@@ -730,3 +730,13 @@ impl<'a, Ty> FnAbi<'a, Ty> {
         Ok(())
     }
 }
+
+// Some types are used a lot. Make sure they don't unintentionally get bigger.
+#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
+mod size_asserts {
+    use super::*;
+    use rustc_data_structures::static_assert_size;
+    // These are in alphabetical order, which is easy to maintain.
+    static_assert_size!(ArgAbi<'_, usize>, 208);
+    static_assert_size!(FnAbi<'_, usize>, 248);
+}

Original file line number	Diff line number	Diff line change
`@@ -730,3 +730,13 @@ impl<'a, Ty> FnAbi<'a, Ty> {`
`730`	`730`	`Ok(())`
`731`	`731`	`}`
`732`	`732`	`}`
	`733`	`+`
	`734`	`+// Some types are used a lot. Make sure they don't unintentionally get bigger.`
	`735`	`+#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]`
	`736`	`+mod size_asserts {`
	`737`	`+ use super::*;`
	`738`	`+ use rustc_data_structures::static_assert_size;`
	`739`	`+ // These are in alphabetical order, which is easy to maintain.`
	`740`	`+ static_assert_size!(ArgAbi<'_, usize>, 208);`
	`741`	`+ static_assert_size!(FnAbi<'_, usize>, 248);`
	`742`	`+}`