diff --git a/clang-tools-extra/clangd/Compiler.cpp b/clang-tools-extra/clangd/Compiler.cpp
--- a/clang-tools-extra/clangd/Compiler.cpp
+++ b/clang-tools-extra/clangd/Compiler.cpp
@@ -39,6 +39,7 @@
 
 void IgnoreDiagnostics::HandleDiagnostic(DiagnosticsEngine::Level DiagLevel,
                                          const clang::Diagnostic &Info) {
+  DiagnosticConsumer::HandleDiagnostic(DiagLevel, Info);
   IgnoreDiagnostics::log(DiagLevel, Info);
 }
 
diff --git a/clang-tools-extra/clangd/unittests/ClangdTests.cpp b/clang-tools-extra/clangd/unittests/ClangdTests.cpp
--- a/clang-tools-extra/clangd/unittests/ClangdTests.cpp
+++ b/clang-tools-extra/clangd/unittests/ClangdTests.cpp
@@ -624,10 +624,8 @@
   ClangdServer Server(CDB, FS, ClangdServer::optsForTest(), &DiagConsumer);
 
   auto FooCpp = testPath("foo.cpp");
-  // clang cannot create CompilerInvocation if we pass two files in the
-  // CompileCommand. We pass the file in ExtraFlags once and CDB adds another
-  // one in getCompileCommand().
-  CDB.ExtraClangFlags.push_back(FooCpp);
+  // clang cannot create CompilerInvocation in this case.
+  CDB.ExtraClangFlags.push_back("-###");
 
   // Clang can't parse command args in that case, but we shouldn't crash.
   runAddDocument(Server, FooCpp, "int main() {}");
@@ -1080,7 +1078,7 @@
   Opts.RunParser = CodeCompleteOptions::ParseIfReady;
 
   // This will make compile command broken and preamble absent.
-  CDB.ExtraClangFlags = {"yolo.cc"};
+  CDB.ExtraClangFlags = {"-###"};
   Server.addDocument(FooCpp, Code.code());
   ASSERT_TRUE(Server.blockUntilIdleForTest());
   auto Res = cantFail(runCodeComplete(Server, FooCpp, Code.point(), Opts));
diff --git a/clang/lib/Frontend/CreateInvocationFromCommandLine.cpp b/clang/lib/Frontend/CreateInvocationFromCommandLine.cpp
--- a/clang/lib/Frontend/CreateInvocationFromCommandLine.cpp
+++ b/clang/lib/Frontend/CreateInvocationFromCommandLine.cpp
@@ -79,22 +79,24 @@
       }
     }
   }
-  if (Jobs.size() == 0 || !isa<driver::Command>(*Jobs.begin()) ||
-      (Jobs.size() > 1 && !OffloadCompilation)) {
+
+  bool PickFirstOfMany = OffloadCompilation || ShouldRecoverOnErorrs;
+  if (Jobs.size() == 0 || (Jobs.size() > 1 && !PickFirstOfMany)) {
     SmallString<256> Msg;
     llvm::raw_svector_ostream OS(Msg);
     Jobs.Print(OS, "; ", true);
     Diags->Report(diag::err_fe_expected_compiler_job) << OS.str();
     return nullptr;
   }
-
-  const driver::Command &Cmd = cast<driver::Command>(*Jobs.begin());
-  if (StringRef(Cmd.getCreator().getName()) != "clang") {
+  auto Cmd = llvm::find_if(Jobs, [](const driver::Command &Cmd) {
+    return StringRef(Cmd.getCreator().getName()) == "clang";
+  });
+  if (Cmd == Jobs.end()) {
     Diags->Report(diag::err_fe_expected_clang_command);
     return nullptr;
   }
 
-  const ArgStringList &CCArgs = Cmd.getArguments();
+  const ArgStringList &CCArgs = Cmd->getArguments();
   if (CC1Args)
     *CC1Args = {CCArgs.begin(), CCArgs.end()};
   auto CI = std::make_unique<CompilerInvocation>();
diff --git a/clang/unittests/Frontend/CMakeLists.txt b/clang/unittests/Frontend/CMakeLists.txt
--- a/clang/unittests/Frontend/CMakeLists.txt
+++ b/clang/unittests/Frontend/CMakeLists.txt
@@ -13,6 +13,7 @@
   PCHPreambleTest.cpp
   OutputStreamTest.cpp
   TextDiagnosticTest.cpp
+  UtilsTest.cpp
   )
 clang_target_link_libraries(FrontendTests
   PRIVATE