harsher compile error

streamline.cm

@@ -1864,6 +1864,7 @@ var streamline = function(ir, log) {
     var cs = null
     var argc = null
     var known_arity = null
+    var load_field_null = false
 
     // Build module_slots map from ir._module_summaries
     if (ir._module_summaries != null) {
@@ -2007,12 +2008,15 @@ var streamline = function(ir, log) {
 
       // --- Warning checks (likely bug) ---
 
+      load_field_null = false
       if (op == "load_field") {
         obj_type = cur_types[instr[2]]
         if (obj_type == T_ARRAY) {
           emit("warning", line, col, "named property access on array — always returns null")
+          load_field_null = true
         } else if (obj_type == T_TEXT) {
           emit("warning", line, col, "named property access on text — always returns null")
+          load_field_null = true
         }
         // Cross-module: check if obj is a module with known exports
         ms = module_slots[text(instr[2])]
@@ -2044,6 +2048,11 @@ var streamline = function(ir, log) {
       // Update types for this instruction
       track_types(cur_types, instr)
 
+      // Override: load_field on array/text always returns null
+      if (load_field_null) {
+        cur_types[instr[1]] = T_NULL
+      }
+
       i = i + 1
     }