Ensure that we clean up after a failed module build and cope with the

results in libclang.

llvm-svn: 149200

1 files changed, 3 insertions, 0 deletions

diff --git a/clang/lib/Frontend/ASTUnit.cpp b/clang/lib/Frontend/ASTUnit.cpp
index c23c64497af..abeb3174bd3 100644
--- a/clang/lib/Frontend/ASTUnit.cpp
+++ b/clang/lib/Frontend/ASTUnit.cpp
@@ -576,6 +576,9 @@ public:
   DiagnosticConsumer *clone(DiagnosticsEngine &Diags) const {
     // Just drop any diagnostics that come from cloned consumers; they'll
     // have different source managers anyway.
+    // FIXME: We'd like to be able to capture these somehow, even if it's just
+    // file/line/column, because they could occur when parsing module maps or
+    // building modules on-demand.
     return new IgnoringDiagConsumer();
   }
 };