[clang-tools-extra] [clang-tidy] Return error code on config parse error (PR #136167)

[Carlos Galvez via cfe-commits]

================
@@ -624,21 +623,29 @@ int clangTidyMain(int argc, const char **argv) {
   }
 
   SmallString<256> FilePath = makeAbsolute(FileName);
-  ClangTidyOptions EffectiveOptions = OptionsProvider->getOptions(FilePath);
+  llvm::ErrorOr<ClangTidyOptions> EffectiveOptions =
+      OptionsProvider->getOptions(FilePath);
+
+  if (!EffectiveOptions)
+    return 1;
 
   std::vector<std::string> EnabledChecks =
-      getCheckNames(EffectiveOptions, AllowEnablingAnalyzerAlphaCheckers);
+      getCheckNames(*EffectiveOptions, AllowEnablingAnalyzerAlphaCheckers);
 
   if (ExplainConfig) {
     // FIXME: Show other ClangTidyOptions' fields, like ExtraArg.
-    std::vector<clang::tidy::ClangTidyOptionsProvider::OptionsSource>
+    llvm::ErrorOr<
+        std::vector<clang::tidy::ClangTidyOptionsProvider::OptionsSource>>
         RawOptions = OptionsProvider->getRawOptions(FilePath);
-    for (const std::string &Check : EnabledChecks) {
-      for (const auto &[Opts, Source] : llvm::reverse(RawOptions)) {
-        if (Opts.Checks && GlobList(*Opts.Checks).contains(Check)) {
-          llvm::outs() << "'" << Check << "' is enabled in the " << Source
-                       << ".\n";
-          break;
+
+    if (RawOptions) {
----------------
carlosgalvezp wrote:

if (!RawOptions) return 1?

https://github.com/llvm/llvm-project/pull/136167