[clangd] Flush stderr after signal handlers run, so we always get the full stack/crash info

2021-10-26 01:08:28 +02:00 · 2021-10-26 01:08:28 +02:00 · aa1ac2ae45
parent 413e249a47
commit aa1ac2ae45
1 changed files with 6 additions and 1 deletions
--- a/clang-tools-extra/clangd/tool/ClangdMain.cpp
+++ b/clang-tools-extra/clangd/tool/ClangdMain.cpp
@ -681,7 +681,12 @@ int main(int argc, char *argv[]) {
  llvm::InitializeAllTargetInfos();
  llvm::sys::PrintStackTraceOnErrorSignal(argv[0]);
  llvm::sys::AddSignalHandler(
-      [](void *) { ThreadCrashReporter::runCrashHandlers(); }, nullptr);
+      [](void *) {
+        ThreadCrashReporter::runCrashHandlers();
+        // Ensure ThreadCrashReporter and PrintStackTrace output is visible.
+        llvm::errs().flush();
+      },
+      nullptr);
  llvm::sys::SetInterruptFunction(&requestShutdown);
  llvm::cl::SetVersionPrinter([](llvm::raw_ostream &OS) {
    OS << versionString() << "\n"