From 89fa401bba5a66cd871354a613f7525424bfa80e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pawe=C5=82=20Bylica?= <pawel@ethereum.org>
Date: Thu, 21 Dec 2023 21:30:47 +0100
Subject: [PATCH] statetest: Disable sync with stdio when tracing (#757)

This increase the tracing performance. More info in the C++ spec:
https://en.cppreference.com/w/cpp/io/ios_base/sync_with_stdio
---
 test/statetest/statetest.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/test/statetest/statetest.cpp b/test/statetest/statetest.cpp
index eb32b05235..3357722f69 100644
--- a/test/statetest/statetest.cpp
+++ b/test/statetest/statetest.cpp
@@ -94,7 +94,10 @@ int main(int argc, char* argv[])
         evmc::VM vm{evmc_create_evmone(), {{"O", "0"}}};
 
         if (trace)
+        {
+            std::ios::sync_with_stdio(false);
             vm.set_option("trace", "1");
+        }
 
         for (const auto& p : paths)
             register_test_files(p, vm, trace || trace_summary);