[0.74] [Fabric] Fixes a crash that happens on release builds (#13619)

Backport of PR #13573 to 0.74. * [Fabric] Fixes a crash that happens on release builds * Change files Co-authored-by: Andrew Coates <30809111+acoates-ms@users.noreply.github.com>
microsoft · Aug 27, 2024 · 8a4ac58 · 8a4ac58
1 parent 39e5e79
commit 8a4ac58
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diff --git a/change/react-native-windows-a4b5f206-f251-4c85-b2a4-0f1aaf4e8763.json b/change/react-native-windows-a4b5f206-f251-4c85-b2a4-0f1aaf4e8763.json
@@ -0,0 +1,7 @@
+{
+  "type": "patch",
+  "comment": "[0.74] [Fabric] Fixes a crash that happens on release builds",
+  "packageName": "react-native-windows",
+  "email": "30809111+acoates-ms@users.noreply.github.com",
+  "dependentChangeType": "patch"
+}
diff --git a/vnext/Microsoft.ReactNative/ReactHost/ReactInstanceWin.cpp b/vnext/Microsoft.ReactNative/ReactHost/ReactInstanceWin.cpp
@@ -657,7 +657,8 @@ void ReactInstanceWin::InitializeBridgeless() noexcept {
             facebook::react::ReactInstance::JSRuntimeFlags options;
             m_bridgelessReactInstance->initializeRuntime(options, [=](facebook::jsi::Runtime &runtime) {
               auto logger = [loggingHook = GetLoggingCallback()](const std::string &message, unsigned int logLevel) {
-                loggingHook(static_cast<facebook::react::RCTLogLevel>(logLevel), message.c_str());
+                if (loggingHook)
+                  loggingHook(static_cast<facebook::react::RCTLogLevel>(logLevel), message.c_str());
               };
               facebook::react::bindNativeLogger(runtime, logger);