From 456e555e8b173cde5ed16f2d784ee56a4601843c Mon Sep 17 00:00:00 2001
From: Ashwin Naren <arihant2math@gmail.com>
Date: Tue, 15 Apr 2025 09:25:06 -0700
Subject: [PATCH] better error

---
 compiler/codegen/src/ir.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/compiler/codegen/src/ir.rs b/compiler/codegen/src/ir.rs
index 39857e6fc..9106d3fdf 100644
--- a/compiler/codegen/src/ir.rs
+++ b/compiler/codegen/src/ir.rs
@@ -244,7 +244,8 @@ impl CodeInfo {
                     let instr_display = instr.display(display_arg, self);
                     eprint!("{instr_display}: {depth} {effect:+} => ");
                 }
-                let new_depth = depth.checked_add_signed(effect).unwrap();
+                // Either it's less than 0 or more than u32. Option 1 is far more likely unless something is seriously wrong.
+                let new_depth = depth.checked_add_signed(effect).expect("The stack is detected to have likely been reduced to less than 0 elements, this is a bug.");
                 if DEBUG {
                     eprintln!("{new_depth}");
                 }