[clang] [analyzer][CTU] Macro expansions for imported translation units (PR #176126)

[Balázs Benics via cfe-commits]

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@@ -620,13 +649,23 @@ CrossTranslationUnitContext::ASTLoader::loadFromSource(
       CI.getDiagnostics().getDiagnosticIDs()};
   auto Diags = llvm::makeIntrusiveRefCnt<DiagnosticsEngine>(DiagID, *DiagOpts,
                                                             DiagClient);
+  std::unique_ptr<MacroExpansionContext> MacroExpansions;
 
   // This runs the driver which isn't expected to be free of sandbox violations.
   auto BypassSandbox = llvm::sys::sandbox::scopedDisable();
-  return CreateASTUnitFromCommandLine(
+  auto Unit = CreateASTUnitFromCommandLine(
       CommandLineArgs.begin(), (CommandLineArgs.end()),
       CI.getPCHContainerOperations(), DiagOpts, Diags,
-      CI.getHeaderSearchOpts().ResourceDir);
+      CI.getHeaderSearchOpts().ResourceDir, false, StringRef(), false,
+      CaptureDiagsKind::None, {}, true, 0, TU_Complete, false, false, false,
+      SkipFunctionBodiesScope::None, false, false, false, false, std::nullopt,
+      nullptr, nullptr, [&MacroExpansions](CompilerInstance &CI) {
+        MacroExpansions.reset(new MacroExpansionContext(CI.getLangOpts()));
+        MacroExpansions->registerForPreprocessor(CI.getPreprocessor());
+      });
+  MacroExpansions->dumpExpansionRanges();
+  MacroExpansions->dumpExpandedTexts();
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steakhal wrote:

I think you might have forgotten about these dumps here.

https://github.com/llvm/llvm-project/pull/176126