From e59601cf1c6f9ad2f70cf4753aa1f645bf6ec956 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment=20Gr=C3=A9goire?= <lectem@gmail.com>
Date: Wed, 20 May 2026 17:51:42 +0200
Subject: [PATCH] Fix ProfilerWorker hang when TRACY_HAS_CALLSTACK is not
 defined

---
 public/client/TracyProfiler.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/public/client/TracyProfiler.cpp b/public/client/TracyProfiler.cpp
index e7b1360a..d1a67831 100644
--- a/public/client/TracyProfiler.cpp
+++ b/public/client/TracyProfiler.cpp
@@ -1971,8 +1971,12 @@ void Profiler::Worker()
         }
 
 #ifdef TRACY_ON_DEMAND
+#  ifdef TRACY_HAS_CALLSTACK
+        // Only wait on m_symbolsBusy if the symbol worker thread exists; otherwise nobody
+        // ever resets the flag and we'd spin forever on the second connection.
         while( m_symbolsBusy.load( std::memory_order_acquire ) ) { YieldThread(); }
         m_symbolsBusy.store( true, std::memory_order_release );
+#  endif
         const auto currentTime = GetTime();
         ClearQueues( token );
         m_connectionId.fetch_add( 1, std::memory_order_release );