Fix

Author: alwx

dev-packages/e2e-tests/patch-scripts/rn.patch.podfile.js

@@ -63,8 +63,22 @@ if (currentMatch) {
   debug.log('Warning: Could not find platform :ios line to patch');
 }
 
+// Add Sentry source dependency to build from source for Xcode 26+ compatibility
+// The prebuilt XCFramework from CocoaPods was built with Xcode 16 and contains
+// Swift compatibility libraries that don't exist in Xcode 26
+// NOTE: Keep this version in sync with packages/core/RNSentry.podspec
+const sentryCocoaVersion = '9.4.1';
+const sentrySourceDep = `  # Build Sentry from source to support Xcode 26+\n  pod 'Sentry', :git => 'https://github.com/getsentry/sentry-cocoa.git', :tag => '${sentryCocoaVersion}'\n`;
+const targetPattern = /(target\s+['"][^'"]+['"]\s+do\s*\n)/;
+let addedSentryDep = false;
+if (!content.includes("pod 'Sentry', :git =>")) {
+  content = content.replace(targetPattern, `$1${sentrySourceDep}`);
+  addedSentryDep = true;
+  debug.log('Added Sentry source dependency for Xcode 26+ compatibility');
+}
+
 // Write the file if any changes were made
-if (shouldPatch || currentMatch) {
+if (shouldPatch || currentMatch || addedSentryDep) {
   fs.writeFileSync(args['pod-file'], content);
   debug.log('Podfile patched successfully!');
 } else {

samples/react-native/ios/Podfile

@@ -36,6 +36,11 @@ target 'sentryreactnativesample' do
     :app_path => "#{Pod::Config.instance.installation_root}/.."
   )
 
+  # Build Sentry from source to support Xcode 26+
+  # The prebuilt XCFramework from CocoaPods was built with Xcode 16 and contains
+  # Swift compatibility libraries that don't exist in Xcode 26
+  pod 'Sentry', :git => 'https://github.com/getsentry/sentry-cocoa.git', :tag => '9.4.1'
+
   if ENV['RCT_NEW_ARCH_ENABLED'] == '1'
     pod 'AppTurboModules', :path => "./../tm"
   end