From aac46663f0e11258cae91a6ee6ebee00443f1904 Mon Sep 17 00:00:00 2001
From: Chris Fallin <chris@cfallin.org>
Date: Mon, 13 Feb 2023 14:30:25 -0800
Subject: [PATCH] Sort debuginfo tuples by starting address, and detect
 overlapping ranges

---
 src/ir/debug.rs | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/ir/debug.rs b/src/ir/debug.rs
index 7568243..2589d97 100644
--- a/src/ir/debug.rs
+++ b/src/ir/debug.rs
@@ -65,10 +65,16 @@ impl DebugMap {
             let loc = debug.intern_loc(file, loc.line.unwrap_or(0), loc.column.unwrap_or(0));
             tuples.push((start as u32, end as u32, loc));
         }
+        tuples.sort();
 
         println!("tuples:");
-        for &(start, end, loc) in &tuples {
-            println!(" {:x} - {:x}: {}", start, end, loc);
+        let mut last = 0;
+        for &(start, len, loc) in &tuples {
+            if start < last {
+                println!("  WARNING: OVERLAP");
+            }
+            last = start + len;
+            println!(" {:x} - {:x}: {}", start, start + len, loc);
         }
         println!("files: {:?}", debug.source_files);
         println!("locs: {:?}", debug.source_locs);