diff --git a/depell/src/index.js b/depell/src/index.js
index 92a0955e..46e47321 100644
--- a/depell/src/index.js
+++ b/depell/src/index.js
@@ -286,7 +286,7 @@ async function bindCodeEdit(target) {
 		if (minified_size) {
 			codeSize.textContent = (MAX_CODE_SIZE - minified_size) + "";
 			const perc = Math.min(100, Math.floor(100 * (minified_size / MAX_CODE_SIZE)));
-			codeSize.style.color = `color-mix(in srgb, white, var(--error) ${perc}%)`;
+			codeSize.style.color = `color-mix(in srgb, light-dark(black, white), var(--error) ${perc}%)`;
 		}
 		timeout = 0;
 	};
diff --git a/lang/src/lib.rs b/lang/src/lib.rs
index be6f58a9..19e67161 100644
--- a/lang/src/lib.rs
+++ b/lang/src/lib.rs
@@ -433,6 +433,10 @@ pub mod ty {
         }
 
         pub fn try_upcast(self, ob: Self) -> Option<Self> {
+            self.try_upcast_low(ob, false)
+        }
+
+        pub fn try_upcast_low(self, ob: Self, coerce_pointer: bool) -> Option<Self> {
             let (oa, ob) = (Self(self.0.min(ob.0)), Self(self.0.max(ob.0)));
             let (a, b) = (oa.strip_pointer(), ob.strip_pointer());
             Some(match () {
@@ -444,7 +448,7 @@ pub mod ty {
                 _ if a.is_signed() && b.is_signed() || a.is_unsigned() && b.is_unsigned() => ob,
                 _ if a.is_unsigned() && b.is_signed() && a.repr() - U8 < b.repr() - I8 => ob,
                 _ if a.is_unsigned() && b.is_signed() && a.repr() - U8 > b.repr() - I8 => oa,
-                _ if oa.is_integer() && ob.is_pointer() => ob,
+                _ if oa.is_integer() && ob.is_pointer() && coerce_pointer => ob,
                 _ => return None,
             })
         }
diff --git a/lang/src/son.rs b/lang/src/son.rs
index 6807a6ed..41394a46 100644
--- a/lang/src/son.rs
+++ b/lang/src/son.rs
@@ -666,7 +666,9 @@ impl Nodes {
         let id = self.new_node_nop(ty, kind, inps);
         if let Some(opt) = self.peephole(id, tys) {
             debug_assert_ne!(opt, id);
-            self.queued_peeps.clear();
+            for peep in mem::take(&mut self.queued_peeps) {
+                self.unlock(peep);
+            }
             self.lock(opt);
             self.remove(id);
             self.unlock(opt);
@@ -733,7 +735,9 @@ impl Nodes {
 
     fn late_peephole(&mut self, target: Nid, tys: &Types) -> Option<Nid> {
         if let Some(id) = self.peephole(target, tys) {
-            self.queued_peeps.clear();
+            for peep in mem::take(&mut self.queued_peeps) {
+                self.unlock(peep);
+            }
             self.replace(target, id);
             return None;
         }
@@ -742,6 +746,7 @@ impl Nodes {
 
     fn iter_peeps(&mut self, mut fuel: usize, stack: &mut Vec<Nid>, tys: &Types) {
         debug_assert!(stack.is_empty());
+        debug_assert!(self.queued_peeps.is_empty());
 
         self.iter()
             .filter_map(|(id, node)| node.kind.is_peeped().then_some(id))
@@ -758,18 +763,21 @@ impl Nodes {
             }
 
             if let Some(new) = self.peephole(node, tys) {
-                stack.append(&mut self.queued_peeps);
                 self.replace(node, new);
                 self.push_adjacent_nodes(new, stack);
             }
+            stack.append(&mut self.queued_peeps);
 
-            //debug_assert_matches!(
-            //    self.iter()
-            //        .find(|(i, n)| n.lock_rc != 0 && n.kind.is_peeped() && !stack.contains(i)),
-            //    None
-            //);
+            debug_assert_matches!(
+                self.iter().find(|(i, n)| n.lock_rc.get() != 0
+                    && n.kind.is_peeped()
+                    && !stack.contains(i)),
+                None
+            );
         }
 
+        debug_assert!(self.queued_peeps.is_empty());
+
         stack.drain(..).for_each(|s| _ = self.unlock_remove(s));
     }
 
@@ -995,9 +1003,11 @@ impl Nodes {
                 for i in self[target].outputs.clone() {
                     if self[i].kind == Kind::Phi {
                         for o in self[i].outputs.clone() {
-                            self.lock(o);
+                            if self.is_unlocked(o) {
+                                self.lock(o);
+                                self.queued_peeps.push(o);
+                            }
                         }
-                        self.queued_peeps.extend(self[i].outputs.clone());
                         self.replace(i, self[i].inputs[side]);
                     }
                 }
@@ -1271,8 +1281,10 @@ impl Nodes {
                         inps[2] = region;
                         inps[3] = prev_store;
                         prev_store = self.new_node_nop(self[oper].ty, Kind::Stre, inps);
-                        self.lock(prev_store);
-                        self.queued_peeps.push(prev_store);
+                        if self.is_unlocked(prev_store) {
+                            self.lock(prev_store);
+                            self.queued_peeps.push(prev_store);
+                        }
                     }
 
                     return Some(prev_store);
@@ -1385,9 +1397,11 @@ impl Nodes {
                             self.unlock(o);
 
                             for o in self[o].outputs.clone() {
-                                self.lock(o);
+                                if self.is_unlocked(o) {
+                                    self.lock(o);
+                                    self.queued_peeps.push(o);
+                                }
                             }
-                            self.queued_peeps.extend(self[o].outputs.clone());
                             self.replace(o, self[o].inputs[1]);
                         }
                     }
@@ -4774,7 +4788,7 @@ impl<'a> Codegen<'a> {
         rhs: &mut Value,
         op: TokenKind,
     ) -> (ty::Id, Nid) {
-        if let Some(upcasted) = lhs.ty.try_upcast(rhs.ty) {
+        if let Some(upcasted) = lhs.ty.try_upcast_low(rhs.ty, true) {
             let to_correct = if lhs.ty != upcasted {
                 Some((lhs, rhs))
             } else if rhs.ty != upcasted {
@@ -4928,7 +4942,6 @@ impl<'a> Codegen<'a> {
     ) -> bool {
         if let Some(upcasted) = src.ty.try_upcast(expected)
             && upcasted == expected
-            && upcasted.is_pointer() == src.ty.is_pointer()
         {
             if src.ty.is_never() {
                 return true;