From 372b4bca46ca034fa4c889e06f28dcdeffad2d67 Mon Sep 17 00:00:00 2001
From: Mark <markjordanthom@gmail.com>
Date: Tue, 2 Jan 2024 10:06:07 -0700
Subject: [PATCH] mark anonymous variables in compile_is_call (#2257)

---
 src/codegen.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/codegen.rs b/src/codegen.rs
index fd0d21f9..11ad867f 100644
--- a/src/codegen.rs
+++ b/src/codegen.rs
@@ -860,6 +860,12 @@ impl<'b> CodeGenerator<'b> {
                     self.marker.mark_safe_var_unconditionally(var_num);
                     compile_expr!(self, &terms[1], term_loc, code)
                 } else {
+                    self.marker.mark_anon_var::<QueryInstruction>(
+                        Level::Shallow,
+                        term_loc,
+                        code,
+                    );
+
                     if let Term::Var(ref vr, ref var) = &terms[1] {
                         let var_num = var.to_var_num().unwrap();
 
-- 
2.54.0