From 61250c906a81b3ae35477f8e44021889d361e225 Mon Sep 17 00:00:00 2001
From: Jakub Doka <jakub.doka2@gmail.com>
Date: Sun, 3 Nov 2024 21:31:46 +0100
Subject: [PATCH] comparison of non null types to null are now errors

---
 lang/src/son.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lang/src/son.rs b/lang/src/son.rs
index 087d485c..351ff940 100644
--- a/lang/src/son.rs
+++ b/lang/src/son.rs
@@ -2704,7 +2704,11 @@ impl<'a> Codegen<'a> {
                 self.strip_var(&mut cmped);
 
                 let Some(ty) = self.tys.inner_of(cmped.ty) else {
-                    return Some(self.ci.nodes.new_const_lit(ty::Id::BOOL, 1));
+                    self.report(
+                        left.pos(),
+                        fa!("'{}' is never null, remove this check", self.ty_display(cmped.ty)),
+                    );
+                    return Value::NEVER;
                 };
 
                 Some(Value::new(self.gen_null_check(cmped, ty, op)).ty(ty::BOOL))