gen: Add size checking for substituted variables

1 files changed, 8 insertions, 0 deletions

diff --git a/src/gen.rs b/src/gen.rs
index e50cddea..e23a929f 100644
--- a/src/gen.rs
+++ b/src/gen.rs
@@ -469,6 +469,14 @@ fn gen_globals(mut ctx: &mut GenCtx,
         }
 
         if let Some(substituted) = ctx.current_module().translations.get(&g.name()) {
+            match (substituted.layout(), g.layout()) {
+                (Some(l), Some(lg)) if l.size != lg.size => {},
+                (None, None) => {},
+                _ => {
+                    // XXX real logger
+                    println!("warning: substituted type for {} does not match its size", g.name());
+                }
+            }
             g = substituted.clone();
         }