From e2322eeb63efc492bbaf499427afd3592c4836be Mon Sep 17 00:00:00 2001
From: Paul Buetow <paul@buetow.org>
Date: Fri, 6 Mar 2026 16:31:21 +0200
Subject: fix: return errors for unknown counter fields (task 383)

---
 internal/flamegraph/livetrie.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'internal/flamegraph/livetrie.go')

diff --git a/internal/flamegraph/livetrie.go b/internal/flamegraph/livetrie.go
index 04137bf..e76a806 100644
--- a/internal/flamegraph/livetrie.go
+++ b/internal/flamegraph/livetrie.go
@@ -102,7 +102,10 @@ func (lt *LiveTrie) Ingest(ep *event.Pair) {
 
 // AddRecord adds one already-decoded flamegraph record into the live trie.
 func (lt *LiveTrie) AddRecord(record IterRecord) {
-	value := record.Cnt.ValueByName(lt.countField)
+	value, err := record.Cnt.ValueByName(lt.countField)
+	if err != nil {
+		return
+	}
 
 	lt.mu.Lock()
 	frames := lt.buildFrames(record)
-- 
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