From 1814545bc6aa86498b3cf107142aed1c66567e66 Mon Sep 17 00:00:00 2001
From: Doehyun Baek <doehyunbaek@gmail.com>
Date: Mon, 26 Aug 2024 17:17:27 +0900
Subject: [PATCH] print out warning when parsing potential problems

---
 crates/replay_gen/src/trace.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/crates/replay_gen/src/trace.rs b/crates/replay_gen/src/trace.rs
index d56881e..ea523e5 100644
--- a/crates/replay_gen/src/trace.rs
+++ b/crates/replay_gen/src/trace.rs
@@ -192,6 +192,10 @@ fn parse_number(s: &str) -> Option<F64> {
         "-Infinity" => Some(F64(std::f64::NEG_INFINITY)),
         _ => {
             if let Ok(num) = s.parse::<f64>() {
+                let round_trip = num.to_string();
+                if round_trip != s {
+                    eprintln!("WARNING: roundtrip of {s}: {round_trip}");
+                }
                 Some(F64(num)) // Handle floats and scientific notation
             } else {
                 None // Not a number