If an excluded header does not exist, just ignore it

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168077 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 1 deletions

diff --git a/lib/Lex/ModuleMap.cpp b/lib/Lex/ModuleMap.cpp
index 8a936fa8e1..dda96c5989 100644
--- a/lib/Lex/ModuleMap.cpp
+++ b/lib/Lex/ModuleMap.cpp
@@ -1307,7 +1307,9 @@ void ModuleMapParser::parseHeaderDecl(SourceLocation UmbrellaLoc,
       if (BuiltinFile)
         Map.addHeader(ActiveModule, BuiltinFile, Exclude);
     }
-  } else {
+  } else if (!Exclude) {
+    // Ignore excluded header files. They're optional anyway.
+    
     Diags.Report(FileNameLoc, diag::err_mmap_header_not_found)
       << Umbrella << FileName;
     HadError = true;