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-rw-r--r--lib/Frontend/FrontendActions.cpp16
1 files changed, 15 insertions, 1 deletions
diff --git a/lib/Frontend/FrontendActions.cpp b/lib/Frontend/FrontendActions.cpp
index a97a32ba06..dd98fcf3eb 100644
--- a/lib/Frontend/FrontendActions.cpp
+++ b/lib/Frontend/FrontendActions.cpp
@@ -136,6 +136,10 @@ ASTConsumer *GenerateModuleAction::CreateASTConsumer(CompilerInstance &CI,
static void collectModuleHeaderIncludes(const LangOptions &LangOpts,
clang::Module *Module,
llvm::SmallString<256> &Includes) {
+ // Don't collect any headers for unavailable modules.
+ if (!Module->isAvailable())
+ return;
+
// Add includes for each of these headers.
for (unsigned I = 0, N = Module->Headers.size(); I != N; ++I) {
if (LangOpts.ObjC1)
@@ -222,7 +226,17 @@ bool GenerateModuleAction::BeginSourceFileAction(CompilerInstance &CI,
return false;
}
-
+
+ // Check whether we can build this module at all.
+ StringRef Feature;
+ if (!Module->isAvailable(CI.getLangOpts(), Feature)) {
+ CI.getDiagnostics().Report(diag::err_module_unavailable)
+ << Module->getFullModuleName()
+ << Feature;
+
+ return false;
+ }
+
// Do we have an umbrella header for this module?
const FileEntry *UmbrellaHeader = Module->getUmbrellaHeader();