From b33eadf097a88e606f0aeeb04f79d30b3e4be931 Mon Sep 17 00:00:00 2001
From: Harsh <harshu12bhardwaj@gmail.com>
Date: Tue, 20 Oct 2026 15:51:32 +0530
Subject: [PATCH] Fix first event timestamp fallback

---
 .../gctoolkit/parser/jvm/PreUnifiedDiarizer.java          | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/parser/src/main/java/com/microsoft/gctoolkit/parser/jvm/PreUnifiedDiarizer.java b/parser/src/main/java/com/microsoft/gctoolkit/parser/jvm/PreUnifiedDiarizer.java
index 1bf6beb6a..aa46b134e 100644
--- a/parser/src/main/java/com/microsoft/gctoolkit/parser/jvm/PreUnifiedDiarizer.java
+++ b/parser/src/main/java/com/microsoft/gctoolkit/parser/jvm/PreUnifiedDiarizer.java
@@ -228,9 +228,8 @@ public boolean diarize(String line) {
 
     @Override
     public DateTimeStamp getTimeOfFirstEvent() {
-        if (timeOfFirstEvent == null)
-            timeOfFirstEvent = new DateTimeStamp(0.0d);
-        return timeOfFirstEvent;
+        // Keep the fallback transient so a timestamp found on a later line can still be recorded.
+        return timeOfFirstEvent == null ? new DateTimeStamp(0.0d) : timeOfFirstEvent;
     }
 
     private void timeOfFirstEvent(String line) {
@@ -1047,4 +1046,5 @@ private void setGCCause(String gcCause) {
             }
         }
     }
-}
\ No newline at end of file
+}
+