Change err_pp_file_not_found back to an Error; when it's a Warning, we suppress it in system headers.  And it is not a good idea to suppress it in system headers.  (This was originally changed in r134996 to implement -MG.)

Fixes <rdar://10041960>.  And also brings down the number of warnings without a flag by one :)



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138842 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/PPDirectives.cpp b/lib/Lex/PPDirectives.cpp
index 39a358d..99383e4 100644
--- a/lib/Lex/PPDirectives.cpp
+++ b/lib/Lex/PPDirectives.cpp
@@ -1187,7 +1187,8 @@
                                   End, SearchPath, RelativePath);
 
   if (File == 0) {
-    Diag(FilenameTok, diag::warn_pp_file_not_found) << Filename;
+    if (!SuppressIncludeNotFoundError)
+      Diag(FilenameTok, diag::err_pp_file_not_found) << Filename;
     return;
   }
 
diff --git a/lib/Lex/Pragma.cpp b/lib/Lex/Pragma.cpp
index 1d0b5e4..92c0dd5 100644
--- a/lib/Lex/Pragma.cpp
+++ b/lib/Lex/Pragma.cpp
@@ -368,7 +368,8 @@
   const DirectoryLookup *CurDir;
   const FileEntry *File = LookupFile(Filename, isAngled, 0, CurDir, NULL, NULL);
   if (File == 0) {
-    Diag(FilenameTok, diag::warn_pp_file_not_found) << Filename;
+    if (!SuppressIncludeNotFoundError)
+      Diag(FilenameTok, diag::err_pp_file_not_found) << Filename;
     return;
   }